This document gives a detailed description of all the instructions; these have been put into two sets for the sake of simplicity: the basic instructions (See

Standard instructions, p. 13)

the advanced instructions (See

Advanced instructions, p. 79)

These comprise all the basic boolean instructions, the predefined function blocks, and the arithmetic and logic instructions on integers.

Advanced instructions

These comprise instructions which address advanced programming needs. These instructions are of two types: l PL7 language, these increase the possibilities for language processing using specific functions (manipulation of character strings, time management, etc.), l tasks, these offer functions specific to the task to be processed, for example functions for the communication task: l PRINT to send a character string type message to a terminal or printer, l l

SEND to send a message to an application,

PID PID regulating function.

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1.2 Boolean instructions

Introduction

Aim of this section

What's in this

Section?

This section describes the PL7 language boolean instructions

This Section contains the following Maps:

Topic

Bit object instructions

Definition of the main boolean objects

Loading instructions

Assign instructions

AND Logic Instruction

OR Logic Instruction

Exclusive OR Instructions

Standard instructions

Page

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Standard instructions

Bit object instructions

Bits instructions The following instructions apply to bit objects.

Designation

AND

XOR

NOT

SET

RESET

Function

Assignment of a bit boolean OR boolean AND boolean exclusive OR

Inversion

Rising edge

Falling edge

Set to 1:

Set to 0:

Bits table instructions

The following instructions apply to bits table objects.

Designation

Table:= Table

Table:= Word

Word:= Table

Table:= Double word

Double word: = Table

COPY_BIT

AND_ARX

OR_ARX

XOR_ARX

NOT_ARX

BIT_W

BIT_D

W_BIT

D_BIT

LENGHT_ARX

Function

Assignment between two tables

Assignment of a word to a table

Assignment of a table to a word

Assignment of a double word to a table

Assignment of a table to a double word

Copy of a bits table in a bits table

AND between two tables

OR between two tables exclusive OR between two tables

Negation in a table

Copy of a bits table in a word table

Copy of a bits table in a double word table

Copy of a word table in a bits table

Copy of a double word table in a bits table

Calculation of the length of a table by the number of elements

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Standard instructions

Definition of the main boolean objects

Description

Bits

The following table describes the main boolean objects.

Description Examples

Immediate values

0 or 1 (False or True) 0

Inputs/outputs These bits are the "logic images" of the electrical states of the inputs/ outputs.

They are stored in the data memory and updated each time the task in which they are configured is polled.

%I23.5

%Q51,2

Internal

Note: The unused input/output bits may not be used as internal bits.

The internal bits are used to store the intermediary states during execution of the program.

%M200

System

Function blocks

The system bits %S0 to %S127 monitor the correct operation of the PLC and the running of the application program.

%S10

The function block bits correspond to the outputs of the function blocks or DFB instance.

These outputs may be either directly connected or used as an object.

%TM8.Q

Word extracts With the PL7 software it is possible to extract one of the 16 bits of a word object.

%MW10:X5

Grafcet steps and macrosteps

The Grafcet status bits of the steps, macro-steps and macro-step steps are used to recognize the Grafcet status of step i, of macro-step j or of step i of the macro-step j.

%X21

%X5.9

Write access

Yes

Accordin g to i

Accordin g to the type of words

Yes

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Standard instructions

Loading instructions

Role

Ladder

The following table describes the role of each of the instructions.

Instruction list Structured text

LD :=

Description

Normally open contacts: contact made

(result at 1) when the controlling bit object is at state 1.

Timing diagram

Opérande

Résultat

LDN :=NOT Normally closed contacts: contact made

(result at 1) when the controlling bit object is at state 0.

Opérande

Résultat

LDR

LDF

:=RE

:=FE

Rising edge contacts: detect controlling bit object changing from 0 to 1.

Setting the result to 1 takes 1 cycle to complete.

Falling edge contacts: detect controlling bit object changing from 1 to 0.

Setting the result to 1 takes 1 cycle to complete.

Opérande

Résultat

Opérande

Résultat

Permitted operands

Ladder

The following table gives a list of the operands used for these instructions.

Instruction list Structured text

LD :=

Operands

%I,%Q,%M,%S,%BLK,%•:Xk, %Xi, (True and False in instruction list or structured text)

LDN

LDR

:=NOT

:=RE

%I,%Q,%M,%S,%BLK,%•:Xk, %Xi, (True and False in instruction list or structured text)

%I,%Q,%M

LDF :=FE %I,%Q,%M

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Example in ladder

Standard instructions

The following example shows how to program the loading instructions in ladder format.

%I1.1

%Q2.3

%M0 %Q2.2

%Q2.4

%I1.2

%I1.3

%Q2.5

Example in instruction list

The following example shows how to program the loading instructions in Instruction

List language.

LD %I1.1

ST %Q2.3

LDN %M0

ST %Q2.2

LDR %I1.2

ST %Q2.4

LDF %I1.3

ST %Q2.5

Example in structured text

The following example shows how to program the loading instructions in structured text language.

%Q2.3:=%I1.1;

%Q2.2:=NOT %M0;

%Q2.4:=RE %I1.2;

%Q2.5:=FE %I1.3;

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Standard instructions

Assign instructions

Role The following table describes the role of each of the instructions.

Timing diagram Language data

Instruction list Structured text

Description

ST := to the direct coils the associated bit object takes the value of the equation result.

Operand

Result

STN :=NOT

SET

RESET to the negated coils: the associated bit object takes the inverse value of the equation result.

Operand

Result to the set coils: the associated bit object is set when the result of the equation is set Operand

Result to the trigger coils: the associated bit object is clear when the result of the equation is set.

Operand

Result

Permitted operands

The following table gives a list of the operands used for these instructions

Language data

Instruction list

Structured text

Operands

%I,%Q,%M,%S,%•:Xk

STN

:=NOT

SET

RESET

%I,%Q,%M,%S,%•:Xk

%I,%Q,%M,%S,%•:Xk,%Xi

Only in the preliminary processing.

%I,%Q,%M,%S,%•:Xk,%Xi

Only in the preliminary processing.

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Example in language data

Standard instructions

The following example shows how to program the assign instructions in language data.

%I1.1

%Q2.3

%Q2.2

%I1.2

%Q2.4

Example in instruction list

The following example shows how to program the assign instructions in instruction list language.

LD %I1.1

ST %Q2.3

STN %Q2.2

S %Q2.4

LD %I1.2

R %Q2.4

Example in structured text

The following example shows how to program the assign instructions in structured text language.

%Q2.3 := %I1.1;

%Q2.2 := NOT %I1.1;

IF %I1.1 THEN

SET %Q2.4;

END_IF;

IF %I1.2 THEN

RESET %Q2.4;

END_IF;

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Standard instructions

AND Logic Instruction

Role

Language data

The following table describes the role of each of the instructions

Instruction list Structured text

AND AND

Description

AND logic between the operand and the previous instruction’s Boolean result

Timing diagram

AND

%I1.1

ANDN AND

(NOT...)

AND logic between the operand inverse and the previous instruction’s Boolean result

%M1

%Q2.3

ANDN

%M2

ANDR

%I1.2

%Q2.2

ANDR AND (RE...) AND logic between the operand’s rising edge and the previous instruction’s Boolean result

(2) Setting during 1 cycle

ANDF

%I1.3

%I1.4

%Q2.4 (2)

ANDF

AND (FE...) AND logic between the operand’s falling edge and the previous instruction’s Boolean result

(2) Setting during 1 cycle

%M3

%I1.5

%Q2.5 (2)

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Standard instructions

Permitted operands

Language data

The following table gives a list of the operands used for these instructions

Instruction list Structured text

AND AND

ANDN

ANDR

AND (NOT...)

AND (RE...)

Operands

%I, %Q, %M, %S, %BLK, %•:Xk, %Xi

True (1)/False (0) in instruction list language or structured text

%I, %Q, %M, %S, %BLK, %•:Xk, %Xi

True (1)/False (0) in instruction list language or structured text

%I, %Q, %M

ANDF AND (FE...) %I, %Q, %M

Example in language data

The following example shows how to program the AND Logic instructions in language data.

%I1.1 %M1 %Q2.3

%M2 %I1.2

%I1.3 %I1.4

%M3 %I1.5

%Q2.2

%Q2.4

%Q2.5

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Standard instructions

Example in instruction list

The following example shows how to program the AND Logic instructions in the

Instruction List.

LD %I1.1

AND %M1

ST %Q2.3

LD %M2

ANDN %I1.2

ST %Q2.2

LD %I1.3

ANDR %I1.4

ST %Q2.4

LD %M3

ANDF %I1.5

ST %Q2.5

Example in structured text language

The following example shows how to program the AND Logic instructions in structured text language.

%Q2.3:=%I1.1 AND %M1;

%Q2.2:=%M2 AND (NOT%I1.2);

%Q2.4:=%I1.3 AND (RE%I1.4);

%Q2.5:=%M3 AND (FE%I1.5);

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Standard instructions

OR Logic Instruction

Role

Language data

The following table describes the role of each of the instructions

Structured text Description Instruction list

OR OR OR logic between the operand and the previous instruction’s Boolean result

Timing diagram

%I1.1

%M1

ORN

ORR

OR (NOT...)

OR (RE...)

OR logic between the operand inverse and the previous instruction’s Boolean result

OR logic between the operand’s rising edge and the previous instruction’s Boolean result

%Q2.3

ORN

%M2

%I1.2

%Q2.2

ORR

ORF OR (FE...) OR logic between the operand’s falling edge and the previous instruction’s Boolean result.

%I1.3

%I1.4

%Q2.4

ORF

%M3

%I1.5

%Q2.5

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Standard instructions

Permitted operands

Language data

The following table gives a list of the operands used for these instructions

Instruction list Structured text

OR OR

ORN

ORR

OR (NOT...)

OR (RE...)

Operands

%I, %Q, %M, %S, %BLK, %•:Xk, %Xi

True (1)/False (0) in instruction list language or structured text

%I, %Q, %M, %S, %BLK, %•:Xk, %Xi

True (1)/False (0) in instruction list language or structured text

%I, %Q, %M

ORF OR (FE...) %I, %Q, %M

Example in language data

The following example shows how to program the OR Logic instructions in language data.

%I1.1

%Q2.3

%M1

%M2

%I1.2

%I1.3

%Q2.2

%Q2.4

%I1.4

%M3

%I1.5

%Q2.5

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Example in instruction list

Standard instructions

The following example shows how to program the OR Logic instructions in the

Instruction List.

LD %I1.1

OR %M1

ST %Q2.3

LD %M2

ORN %I1.2

ST %Q2.2

LD %I1.3

ORR %I1.4

ST %Q2.4

LD %M3

ORF %I1.5

ST %Q2.5

Example in structured text language

The following example shows how to program the OR Logic instructions in structured text language.

%Q2.3:=%I1.1 OR %M1;

%Q2.2:=%M2 OR (NOT%I1.2);

%Q2.4:=%I1.3 OR (RE%I1.4);

%Q2.5:=%M3 OR (FE%I1.5);

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Standard instructions

Exclusive OR Instructions

Role

Instruction list

XOR

The following table describes the role of each of the instructions

Structured text Description Timing diagram

XOR OR Exclusive between the operand and the previous instruction’s Boolean result

XOR

%I1.1

XORN

XORR

XORF

XOR (NOT...) OR Exclusive between the operand inverse and the previous instruction’s Boolean result

XOR (RE...)

XOR (FE...)

OR Exclusive between the operand’s rising edge and the previous instruction’s Boolean result

OR Exclusive between the operand’s falling edge and the previous instruction’s Boolean result.

%M1

%Q2.3

XORN

%M2

%I1.2

%Q2.2

XORR

%I1.3

%I1.4

%Q2.4

XORF

%M3

%I1.5

%Q2.5

Note: There are no specific graphic elements for the OR exclusive in language data. However the OR exclusive can be programmed by using a combination of opening and closing contacts (see example below).

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Standard instructions

Permitted operands

The following table gives a list of the operands used for these instructions

Instruction list Structured text

XOR XOR

XORN

XORR

XORF

XOR (NOT...)

XOR (RE...)

XOR (FE...)

Operands

%I, %Q, %M, %S, %BLK, %•:Xk, %Xi

%I, %Q, %M

Example in language data

The following example shows how to program the OR Exclusive instructions in language data.

%I1.1 %M1 %Q2.3

%M1 %I1.1

%M2 %I1.2

%I1.2 %M2

%Q2.2

Example in instruction list

The following example shows how to program the OR Exclusive instructions in the

Instruction List:

LD %I1.1

XOR %M1

ST %Q2.3

LD %M2

XORN %I1.2

ST %Q2.2

LD %I1.3

XORR %I1.4

ST%Q2.4

LD %M3

XORF %I1.5

ST %Q2.5

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Standard instructions

Example in structured text language

The following example shows how to program the OR Exclusive instructions in structured text language.

%Q2.3:=%I1.1 XOR%M1;

%Q2.2:=%M2 XOR (NOT%I1.2);

%Q2.4:=%I1.3 XOR (RE%I1.4)

%Q2.5:=%M3 XOR (FE%I1.5);

Note: The brackets are optional but make the program readable

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Standard instructions

1.3 Predefined function blocks

Introduction

Aim of this subsection

What's in this

Section?

This sub-section describes PL7 language predefined function Blocks

This Section contains the following Maps:

Topic

Introduction to timer function block %TMi

%TMi timer block operating mode

Operation of timer function block %TMi in TON mode

Operation of timer function block %TMi in TOF mode

Operation of timer function block %TMi in TP mode

Programming and configuring timer function blocks

Specific cases of operation for the series 7 timer

Introduction to the up-down counter function block

How the up/down counter function block works

Configuration and programming

Page

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Standard instructions

Introduction to timer function block %TMi

General

Illustration

The timer has 3 operating modes: l l l

TON

TOF

: is used to manage delays on engagement (on delays),

: is used to manage delays on release (off delays),

: is used to create a pulse of precise duration.

The delays or pulse periods are programmable and may or may not be modified via the terminal.

The following is the graphic presentation of the timer function block:

%TMi

IN Q

MODE : TON

TB:1mn

TM.P:9999

MODIF:Y

Characteristics

The timer has the following characteristics:

Characteristic

Timer number

Mode

Time base

Current value

Preset value

Terminal adjustment

(MODIF)

Address Value

%TMi 0 to 63 for a TSX 37, 0 to 254 for a TSX 57

TON

TOF

• default delay on engagement (on delay)

• delay on release (off delay)

%TMi.V

%TMi.P

Y/N

• monostable

1mn (default), 1s, 100ms, 10ms (16 timers max. at 10ms).

The shorter the time base, the more precise the timer.

Word which increases from 0 to %TMi.P on completion of the timer cycle. May be read, tested, but not written in a program (%TMi.V may be modified by the terminal).

0-%TMi.P-9999. Word which may be read, tested and written in a program. Is set at the value of 9999 by default.

The period or delay generated is equal to %Tmi.P x TB.

Y: possibility to modify the preset %Tmi.P value in adjust mode.

N: cannot be accessed in adjust mode.

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Standard instructions

Characteristic

Input (instruction)

"Activation"

Output "Timer"

Address Value

IN Starts the timer on rising edge (TON or TP mode) or falling

"Activation" edge (TOF mode).

Q %Tmi.Q associated bit; setting to 1 depends on the TON,

TOF or TP function.

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Standard instructions

%TMi timer block operating mode

Description The following table shows the operating modes specific to the timer block.

Impact...

of a cold restart of a warm restart

Description

(%S0=1), causes the current value to set to 0, the output %TMi.Q to set to 0 while the preset value is reset to the value defined on configuration.

(%S1=1) has no effect on the timer’s current value, or on the preset value. The current value does not change during power outage.

of a shift to stop mode, deactivation of a task or execution of a breakpoint

does not freeze the current value.

a program jump of the alteration to the preset value

Not polling the instructions in which the timer block is programmed does not freeze the current %TMi.V value; this continues to increase to %TMi.P.

Similarly, the %TMi.Q bit associated with the Q output of the timer block maintains its normal operation and can thus be tested by another instruction. However the output, which is directly connected to the block output, is not activated since it is not polled by the PLC

The alteration to the preset value by instruction or in adjust mode is only taken into account at the next activation of the timer.

The alteration to the preset value in the variables editor is only taken into account after a cold restart (%S0=1).

Note: it is advisable to test the %TMi.Q bit once only during the program.

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Standard instructions

Operation of timer function block %TMi in TON mode

General

Illustration

Operation in TONmode is used to manage the on delays.

The timing diagram illustrates the operation of the timer in TON mode.

(1)

(3) (4)

%TMi.P

%TMi.V

(2)

(5)

Operation The following table shows the operation of the timer in TON mode.

Phase

Description

The timer is started with a rising edge on the IN input

The current value %TMi.V of the timer increases from 0 to %TMi.P by one unit at each pulse of the time base TB

The %TMi.Q output bit moves to 1 when the current value has reached %TMi.P

The %TMi.Q output bit stays at 1 while the IN input is at 1.

When the IN input is at 0, the timer is stopped even if it is still running: %TMi.V takes the value 0.

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Standard instructions

Operation of timer function block %TMi in TOF mode

General

Illustration

Operation in TOF mode is used to manage the off delays.

The timing diagram illustrates the operation of the timer in TOF mode.

(2)

%TMi.P

%TMi.V

(1)

(3)

(4)

(5)

(1)

Operation The following table shows the operation of the timer in TOF mode.

Phase

Description

The current value %TMi.V takes 0, on a rising edge of the IN input (even if the timer is running)

The %TMi.Q output bit moves to 1.

The timer is started with a falling edge on the IN input.

The current value %TMi.P increases to %TMi.P by one unit at each pulse of the time base TB.

The %TMi.Q output bit returns to 0 when the current value has reached %TMi.P

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Standard instructions

Operation of timer function block %TMi in TP mode

General

Illustration

Timer operation in TP mode is used to manage the creation of a pulse of precise duration (monostable funtion).

The timing diagram illustrates the operation of the timer in TP mode.

(1)

(2) (6)

%TMi.P

%TMi.V

(3)

(4)

(5)

Operation The following table shows the operation of the timer in TP mode.

Phase

Description

The timer is started with a rising edge on the IN input

The %TMi.Q output bit moves to 1.

The current value %TMi.V of the timer increases from 0 to %TMi.P by one unit at each pulse of the time base TB

The %TMi.Q output bit returns to 0 when the current value has reached %TMi.P.

When the IN input and the %TMi.Q output are at 0, %TMi.V takes the value 0.

This monostable cannot be reactivated.

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Standard instructions

Programming and configuring timer function blocks

General

Configuration

Programming timer function blocks is always the same regardless of the selected user mode.

The choice between TON, TOF or TP operation is made in the variables editor.

This involves setting the following parameters :

Parameter

Mode

%TMi.P

MODIF

Values

TON, TOF or TP.

1min, 1s, 100ms or 10ms

0 to 9999

Y or N

Programming in ladder language

The following program illustrates the use of a timer function block in ladder language.

%TM1

%I1.1

%Q2.3

IN Q

Example in instruction list

The following program illustrates the use of a timer function block in instruction list .

LD %I1.1

IN %TM1

%TM1.Q

%Q2.3

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Example in structured text

Standard instructions

The following program illustrates the use of a timer function block in structured text language.

IF RE %I1.1 THEN

START %TM1 ;

ELSIF FE %I1.1 THEN

DOWN %TM1 ;

END_IF;

%Q2.3 := %TM1.Q

;

The instruction START %TMi , generates a rising edge on the IN input of the timer block.

The instruction DOWN %TMi , generates a falling edge on the IN input of the timer block.

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Standard instructions

Specific cases of operation for the series 7 timer

Specific cases l l l l l

Incidence of a "cold restart" : (%S0 = 1) loads the preset value (defined by the variables editor) in the current value and sets the output %Ti.D at 0, as the preset value, which may have been altered by the terminal, has been lost.

Incidence of a "warm restart" : there is no incidence of (%S1=1) on the current value of the timer.

Incidence of a switch to stop mode : the switch of the PLC into stop mode does not freeze the current value. The same applies when the current task is deactivated or on execution of a breakpoint.

Incidence of a program jump : not polling the network in which the timer block is programmed does not freeze the current value %Ti.V which continues to decrease to 0. Similarly, the %Ti.D and %Ti.R bits associated with the D and R outputs maintain their normal operation and can thus be tested on another network. However the spools which are directly connected to the block outputs are not activated since they are not polled by the PLC.

Test of %Ti.D and %Ti.R bits : these bits can change state during the cycle.

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Introduction to the up-down counter function block

General

Illustration

This function block is used for: l l

Counting an event

Down counting events

These operations can happen simultaneously

Graphic representation of the up-down counter function block

R E

C.P. : 9999

MODIF : Y

Standard instructions

Characteristics The up-down counter has the following characteristics:

Characteristics

Number Counter

Current value

Preset value

Terminal adjustment

(MODIF)

Y/N

Input (instruction)

"Resetting to zero"

Input (instruction)

"Preset"

Input (instruction)

"Counting"

Input (instruction)

"Down counting"

Address

%Ci

%Ci.V

%Ci.P

Value

0 to 31 for a TSX 37, 0 to 254 for a TSX 57

Increased or decreased word according to the CU and

CD inputs. May be read, and tested but not written by the program. Can be set by the terminal

≤

%Ci.P

≤

9999 . Word which can be read, tested and written (with a default value of 9999) l l

Y: possibility to modify the preset value in adjust mode

N: cannot be accessed in adjust mode

On state 1: %Ci.V = 0

On state 1: %Ci.V = %Ci.P

%Ci.V increment on rising edge

%Ci.V decreased on rising edge

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Standard instructions

Characteristics

Output Overrun

Preset Output reached

Output Overrun

Address Value

E (Empty) When %Ci.V switches from 0 to 9999 (set when %Ci.V is equal to 9999), the associated bit %Ci.E=1 is cleared if the counter continues counting down. When there is an overrun, bit %S18 switches to 1

D (Done) Associated bit %Ci.D=1, when %Ci.V=%Ci.P.

F (Full) When %Ci.V switches from 9999 to 0 (set when %Ci.V is equal to 0), the associated bit %Ci.F is cleared if the counter continues counting up. When there is an overrun, bit %S18 switches to 1

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Standard instructions

How the up/down counter function block works

Operation Counting Function

Action

A rising edge appears on the CU counting input

The %Ci.V current value is equal to the

%Ci.P preset value

Result

The %Ci.V current value is increased by one unit the %Ci.D output bit "preset reached" associated to output D switches to set

The %Ci.V current value switches from

9999 to 0

The counter continues counting

The %Ci.F output bit (counting overrun) switches to set

The %Ci.F output bit (counting overrun) is reset to clear

Down counting Function

Action

A rising edge appears on the CU down counting input

Result

The %Ci.V current value is decreased by one unit

The %Ci.V current value switches from 0 to

9999

The %Ci.E output bit (counting overrun) switches to set

The counter continues down counting The %Ci.E output bit (counting overrun) is reset to clear

Up/Down Counting Function

Action

A rising edge appears on the CU counting input

Result

The %Ci.V current value is increased by one unit

A rising edge appears on the CU down counting input

The two inputs set simultaneously

The %Ci.V current value is decreased by one unit

The current value remains unchanged

Reset to zero

When Result

Input R is set (this input has priority over the other inputs)

The %Ci.V current value is forced to 0. Outputs

%Ci.V, %CI.D and %CI.F are at 0

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Standard instructions

Preset

Action

Input S "Preset" is in state 1 and input R

"Reset to zero"

Result

The %Ci.V current value takes the %Ci.P value and the %Ci.D output switches to 1

Note

Specific cases

On reset to 0 (input R or instruction R): l In language data, the CU and CD input archives are updated with the connected values l In instruction list language and in structured text language, the archives of the CU and CD inputs are not updated; each input keeps the value it had before the call

Different specific cases

Action l Cold reset (%S0=1) l l l l l

Warm restart (%S1=1)

Switch to stop

Task deactivation

Breakpoint execution

Modification of the %Ci.P preset

Result l l l

The %Ci.V current value is set to zero

The %Ci.E, %Ci.D and %Ci.F output bits are set to zero

The preset value is initialized to the value defined during configuration l No incidence on the current counter value

(%Ci.V) l Modifying the preset value by instruction or during recalibration is taken into account during the application’s block management

(activating one of the inputs

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Standard instructions

Configuration and programming

Example

Configuration

Programming

Counting of number of parts = 5000. Each pulse on the input %I1.2 (when the internal %M0 bit is at 1) causes the incrementation of the counter %C8 up to the final preset counter value %C8 (bit %C8.D=1). The input %I1.1 resets the counter to zero.

The following are the parameters to be entered using the variables editor: l l

%Ci.P, fixed at 5000 in this example

MODIF: Y

Ladder language

%I1.2

%I1.1

%M0

%C8

R E

C.P : 5000

MODIF : Y

%C8.D

%Q2.0

Instruction list language

LD %I1.1

R %C8

LD %I1.2

AND %M0

CU %C8

LD %C8.D

ST %Q2.0

Structured text language

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Standard instructions

IF %I1.1 THEN

RESET %C8

END_IF;

%M1:=%I1.2 THEN

UP %C8 ;

END_IF;

%Q2.0: = %C8.D

; l l l l

In structured text language, 4 instructions are used to program the up/down counter function blocks:

RESET %Ci: Resets the current value to zero.

PRESET

DOWN

%Ci: Loads the preset value in the current value

%Ci: Increments the current value

%Ci: Lowers the current value

In the case of structured text language, the CU and CD inputs archive is reset to zero when the instructions UP and DOWN are used. It is therefore the user who must manage the rising edges for these two instructions.

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Standard instructions

1.4 Numerical processing on integers

Introduction

Aim of this subsection

What's in this

Section?

This sub-section describes PL7 language numeric processing on integers

This Section contains the following Maps:

Topic

Introduction to numerical processing using integers

Comparison instructions

Assign instructions

Word assignment

Arithmetic instructions on integers

Logic instructions

Numerical expressions

Page

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Standard instructions

Introduction to numerical processing using integers

General The numerical instructions described in this chapter are for the following objects: l l l bit tables words double words

Instructions for other object types are described in the "Advanced instructions (See

Advanced instructions, p. 79)" section.

Programming in ladder language

Numerical instructions are entered in the blocks: l l l l placed in the test zone for the comparison blocks placed in the action zone for the operation blocks

These blocks can contain: a simple expression; e.g.: OP3:=OP1+OP2 a complex expression; e.g.: OP5:=(OP1+OP2)*OP3-OP4.

Programming example:

%Q2.2

%MW50>10

%I1.0

%MW10:=%KW0:=%KW0+10

%I1.2

N INC%MW100

Programming in

Instruction List language

The instructions are placed between square brackets.

They are executed if the Boolean result from the test instruction preceding the numerical instruction is set to 1.

Programming example:

LD [%MW50>10]

ST %Q2.2

LD %I1.0

[%MW10:=%KW0+10]

LDF %I1.2

[INC%MW100]

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Standard instructions

Programming in structured text language

Numerical instructions are entered directly.

The conditional IF instruction enables these numeric instructions to be conditioned by a Boolean expression.

Programming example :

%Q2.2:=%MW50 > 10;

IF %I1.0 THEN

%MW10:=%KW0 + 10;

END_IF;

IF FE %I1.2 THEN

INC %MW100;

END_IF;

Operand list

Abbreviations

%M:L

%I:L

%Q:L

Abbreviations

Imm. val.

%MW

%KW

%SW

%IW

%QW

%NW

%BLK

%Xi.T

Abbreviations

Imm. val.

Bit table list

Complete addressing

%Mi:L

%Ixy.i:L

%Qxy.i:L

%Xi:L or %Xj.i:L

Word type internal bit table input bit table output bit table step bit table

Access

R/W

List of simple format words

Complete addressing

%MWi

%KWi

%SWi

%IWxy.i(.r)

%QWxy.i(.r)

%NW{j}k e.g.: %TMi.P

%Xi.T or %Xj.i.T

Word type immediate values internal word internal constant system word input bit output word common word word extracted from a standard function block or function block step activity time

Access Indexed form

R -

R/W

%MWi[index]

%KWi[index]

R/W (1) -

R -

R/W

R/W (2) -

R %Xi.T[index]

(1) writing according to i.

(2) writing according to word type, for example: preset values (%Ci.P can be written whilst the current %Ci.V values can only be read).

List of double words

Complete addressing

Word type immediate values

Access Indexed form

R -

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Standard instructions

Abbreviations

%MD

%KD

%SD

%ID

%QD

Complete addressing

%MDi

%KDi

%SDi

%IDxy.i(.r)

%QDxy.i(.r)

Word type double internal word internal double constant double system word double input word double output word

(1) only double word %SD18

Access Indexed form

R/W

%MDi[index]

%KDi[index]

R/W (1)

R/W

Note: There are other types of words and double words, such as %MWxy.i

%KWxy.i and %MDxy.i %KDxy.i associated with specific applications, these double words behave like the double words %MWi %KWi and %MDi %KDi respectively.

Note: Implicit word <--> double word conversions

The PL7 software authorizes operations to be mixed using words and double words. Conversions into one or other format, are done in an implicit manner, one operation making a double word intervene or several immediate values are internally executed automatically in double format.

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Standard instructions

Comparison instructions

General

Structure

Comparison instructions are used to compare two operands.

l l l l l

: tests whether operand 1 is greater than operand 2,

: tests whether operand 1 is less than operand 2,

: tests whether operand 1 is greater than or equal to operand 2,

: tests whether operand 1 is less than or equal to operand 2,

: tests whether operand 1 is different from operand 2.

Ladder language

%Q2.3

%MW10>100

%M0 %Q2.2

%MW20<%KW35

%I1.2

%Q2.4

%MW30>=%MW40

Note: The comparison blocks program themselves in the test zone.

Instruction list language

LD [%MW10>100]

ST %Q2.3

LD %M0

AND [%MW20<%KW35]

ST %Q2.2

LD %I1.2

OR [%MW30>=%MW40]

ST %Q2.4

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Standard instructions

Syntax

Note: The comparison is made between the square brackets following the LD,

AND and OR instructions.

Structured text language

%Q2.3:=%MW10>100 ;

%Q2.2:=%M0 AND (%MW20<%KW35) ;

%Q2.4:=%I1.2 OR (%MW30>=%MW40) ;

Note: The brackets are optional but improve the readability of the program

Comparison instruction operators

Operators

>,>=,<,<=,=,<>

Syntax

Op1 Operator Op2

Operands

Type

Indexable words

Non-indexable words

Indexable double words

Non-indexable double words

Operands 1 and 2 (Op1 and Op2)

%MW,%KW,%Xi.T

Imm.val.,%IW,%QW,%SW,%NW,%BLK, Numeric Expr.

%MD,%KD

Imm.val.,%ID,%QD,%SD,Numeric expr.

Note: l in ladder language, the comparison operation can also be performed with the

Vertical comparison block (See Introduction to the vertical comparison

operation block , p. 107)

l in instruction list language, the comparison instructions can be used within brackets.

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Standard instructions

Assign instructions

General

Bit table assignment

Structure

They change an operand Op2 into an operand Op1

Assignment operations can be performed: l l on bit tables, on words or double words.

Several assign instructions can be linked up in the same block:

Op1:=Op2:=Op3:=Op4:=...

l l l

The following bit table (("Table type PL7 Objects" - Reference Manual Volume

1))operations can be performed: bit table -> bit table (E.g.: 1) bit table -> word or double word (indexed) (E.g.: 2) word or double word (indexed) -> bit table (E.g.: 3)

Ladder language

%Q2.0:8:=%M10:8

%I3.2

%MW100:=%I1.0:16

%I3.3

P %M100:16:=%KW0

Instruction list language

Example 1 :

LD TRUE

[%Q2.0:8]

Example 2 :

LD %I3.2

[%MW100:=%I1.0:16]

Example 3 :

LDR %I3.3

[%MW100:16=%KW0]

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Standard instructions

Syntax

Rules of use

Structured text language

Examples 1 and 2 :

%Q2.0:8:=%M10:8;

IF %I3.2 THEN

%MW100:=%I1.0:16;

END_IF;

Example 3 :

IF RE %I3.3 THEN

%M100:16:=%KW0;

END_IF;

Operator and syntax

Operator

Syntax

Op1:=Op2

Operands

Type

Bit table

Indexable words

Non-indexable words

Operand 1 (Op1)

%M:L,%Q:L,%I:L

%MW

%QW,%SW,%NW,%BLK

Indexable double words

Non-indexable double words

%MD

%QD,%SD

Operand 2 (Op2)

%M:L,%Q:L,%I:L,%Xi:L

%MW,%KW,%Xi.T

Imm.val.,

%IW,%QW,%SW,%NW,%BLK,Num.

expr.

%MD,%KD

Imm.val., %ID,%QD,%SD,Numeric expr.

l l l the home and destination bit tables are not necessarily the same length. If the home table is longer than the destination table, only the least significant bits are transferred. If the destination table is the longer, it is completed with some 0s

For a bit table -> word (or double word) assignment: the table bits are transferred into the word (the least significant word for a double word) by commencing on the right (first table bit in the 0 bit of the word). The word bits not concerned by the transfer (length< 16 or 32) are set to 0

For a word -> bit table assignment: the word bits are transferred from the right (bit

0 of the word into the first table bit)

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Standard instructions

Word assignment

General

Structure

Assignment operations can be performed on the following words: l l l word (indexed) -> word (indexed) or double word (indexed) (E.g.: 1) double word (indexed) -> double word (indexed) or word (indexed) (E.g.: 2) immediate value -> word (indexed) or double word (indexed) (E.g.: 3)

Ladder language

%SW112:=%MW100

%I3.2

%MD0:=%KD0[%MW20]

%I3.3

P %MW10:=100

Instruction list language

Example 1 :

LD TRUE

[%SW112:=%MW100]

Example 2 :

LD %I3.2

[%MD10:=%KD0[%MW20]]

Structured text language

Example 3 :

IF %I3.3 THEN

%MW10:=100;

END_IF;

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Standard instructions

Syntax Operator and syntax

Operator

Syntax

Op1:=Op2

Operands

Type

Indexable words

Non-indexable words

Indexable double words

Non-indexable double words

Operand 1 (Op1)

%MW

%QW,%SW,%NW,%BLK

%MD

%QD,%SD

Operand 2 (Op2)

%MW,%KW,%Xi.T

Imm.Val.,%IW,%QW,%SW,%NW,

%BLK, Num.expr.

%MD,%KD

Imm.Val.,%ID,%QD,%SD, Numeric expr.

Note: Word <--> double word conversions are made implicitly, during double word

--> word assignment, if the double word value cannot be contained in the word, the

%S18 bit is set to 1.

It is possible to perform multiple assignments. Example: %MW0:=%MW2:=%MW4

Caution, in the example %MD14:=%MW10:=%MD12 , it is not necessarily the case that %MD14:=%MD12 , as during the assignment to %MW10, the double word loses its significance due to the double word-single word conversion.

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Standard instructions

Arithmetic instructions on integers

General These instructions are used to perform an arithmetic operation between two operands or on one operand.

List of instructions:

addition of two operands subtraction of two operands multiplication of two operands division of two operands

SQRT square root of an operand

INC incrementation of an operand

DEC

ABS

REM remainder from the division of 2 operands decrementation of an operand absolute value of an operand

Structure Ladder language

%M0

%MW0:=%MW10+100

%I3.2

%MW0:=SQRT(%MW10)

%I3.3

P INC %MW100

Instruction list language

LD %M0

[%MW0:=%MW10+100]

LD %I3.2

[%MW0:=SQRT(%MW10)]

LD %I3.3

[INC %MW100]

Structured text language

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Standard instructions

IF %M0 THEN

%MW0:=%MW10+100;

END_IF;

IF %I3.2 THEN

%MW0:=SQRT(%MW10);

END_IF;

IF RE %I1.3 THEN

INC %MW100;

END_IF

Syntax Operator and syntax

Operator

+ , , * , / , REM

SQRT , ABS

INC , DEC

Syntax

Op1:=Op2 Operator Op3

Op1:=Operator(Op2)

Operator Op1

Operands

Type

Indexable words

Non-indexable words

Indexable double words

Non-indexable double words

Operand 1 (Op1)

%MW

%QW,%SW,%NW,%BLK

%MD

%QD,%SD

Operand 2 (Op2)

%MW,%KW,%Xi.T

Imm.Val.,%IW,%QW,%SW,%NW,

%BLK, Num.expr.

%MD,%KD

Imm.Val.,%ID,%QD,%SD, Numeric expr.

Note: The INC and DEC operations cannot be used in numerical expressions.

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Rules of use

Standard instructions l Addition: Capacity overflow during operation

If the result exceeds the limits: l -32768 or +32767 for an single length operand, l -2.147.483.648 or +2.147.483.647 for a double length operand.

The %S18 bit (overflow) is set to 1. The result is then not significant.

Bit %S18 is managed by a user program:

Example in ladder language:

%M0

%MW0:=%MW1+%MW2

%S18

%MW10:=%MW0

%S18

%MW10:=32767

%S18

Example in instruction list language:

LD %M0

[%MW0:=%MW1+%MW2]

LDN %S18

[%MW10:=%MW0]

LD %S18

[%MW10:=32767]

R %S18]

Example in structured text language:

IF %M0 THEN

%M0:=%MW1+%MW2;

END_IF;

IF %S18 THEN

%MW10:=32767;RESET %S18;

ELSE

%MW10:=%MW0;

END_IF;

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Standard instructions l l l

If %MW1 =23241 and %MW2=21853, the integer result (45094) cannot be expressed in a 16 bit word, bit %S18 is set to 1 and the result obtained (-20442) is incorrect. In this example, when the result is greater than 32767, its value is fixed at 32767.

Multiplication:

Capacity overflow during operation.

If the result exceeds the storage word capacity, the %S18 bit (overflow) is set to

1 and the result is not significant.

Division/remainder of the division:

Dividing by 0.

If the divisor is equal to 0, division is impossible and the %S18 system bit is set to 1. The result is then incorrect.

Capacity overflow during operation.

Extracting the square root:

The square root can only be extracted on positive values. The result is then always positive. If the operand of the square root is negative, the %S18 system bit is set to 1 and the result is incorrect.

l l

Note: l When an operation does not result in an integer (i.e. with a division or square root), the result is truncated (rounded down to the nearest whole number).

The sign of the remainder of the division (REM) is that of the numerator.

The %S18 system bit is managed by the user program. It is set to 1 by the PLC.

It must be reset to 0 by the program in order to be reused (see example below).

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Standard instructions

Logic instructions

General The associated instructions are used to perform a logic operation between two operands or on one operand.

List of instructions:

AND

XOR

NOT

AND (bit by bit) between two operands logical OR (bit by bit) between two operands exclusive OR (bit by bit) between two operands logical complement (bit by bit) of an operand

Structure Ladder language

%M0

%MW0:=%MW10 AND 16#FF00

%I1.3

%MW0:=%KW5 OR %MW10

%MW102:=NOT %MW100

Instruction list language:

LD %M0

[%MW0:=%MW10 AND 16#FF00]

LD TRUE

[%MW0:=%KW5 OR %MW10]

LD %I1.3

[%MW102:=NOT%MW100]

Structured text language:

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Standard instructions

Syntax

IF %M0 THEN

%MW0:=%MW10 AND 16#FF00;

END_IF;

%MW0:=%KW5 OR %MW10 ;

IF %I1.3 THEN

%MW102:=NOT %MW100 ;

END_IF;

Operator and syntax

Operator

AND , OR , XOR

NOT

Syntax

Op1:=Op2 Operator Op3

Op1:=NOT Op2

Operands

Type

Indexable words

Non-indexable words

Indexable double words

Non-indexable double words

Operand 1 (Op1)

%MW

%QW,%SW,%NW

%MD

%QD,%SD

Operand 2 and 3 (Op2, Op3)

%MW,%KW,%Xi.T

Imm.Val.,%IW,%QW,%SW,%NW,

%BLK, Num.expr.

%MD,%KD

Imm.Val.,%ID,%QD,%SD, Numeric expr.

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Standard instructions

Numerical expressions

General

Application rules l The operands of a numerical expression can be either of single or double length:

Example: l l

%MW6*%MW15+SQRT(%DW6)/(%MW149[%MW8])+%KD29)AND16#FF

An operand or an operation with only one operand can be preceded by a + or – sign (+ sign by default)

Example:

SQRT(%MW5)*-%MW9

All word objects can be used in an arithmetic expression. It is possible to index certain words.

Instruction execution priority

The numerical expression is composed of several numerical operands and the arithmetic and logic operators described above.

There can be an unlimited number of operators and operands in an arithmetic expression.

Example:

%MW25*3-SQRT(%MW10)+%KW8*(%MW15 + %MW18)AND16#FF

The priority of the different instructions is respected in the numerical expression.

Instructions are executed in the following order:

Execution order:

Rank

Instruction

Instruction to an operand

*,/,REM

+,-

<,>,<=,>=

=,<>

AND

XOR

Example:

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Standard instructions

Brackets

The instructions below are carried out in numerical order:

SQRT (%MW3) + %MW5 * 7 AND %MW8 OR %MW5 XOR %MW10

1 2

4 5

Brackets are used to change the order of priority. It is recommended that they be used to structure numerical expressions.

The example below shows the order of execution of instructions between brackets

((%MW5 AND %MW6) + %MW7) * %MW8

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1.5 Program instructions

Introduction

Aim of this subsection

What's in this

Section?

This sub-section describes PL7 language program instructions.

This Section contains the following Maps:

Topic

Subroutine call

Subroutine return

Jump in the program

End of program instructions

Program stop

Event masking/unmasking instructions

NOP Instructions

Standard instructions

Page

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Standard instructions

Subroutine call

General

Structure

The subroutine call instruction is used to call a subroutine module from the same task.

Ladder language :

%M8 SR10

Rules

Instruction list language :

LD %M8

SR10

Structured text language :

IF %M8 THEN

SR10 ;

END_IF; l l l l

The subroutine call can only be performed if the subroutine module has been created beforehand

A subroutine is returned on the action immediately following the subroutine call instruction

A subroutine can call another subroutine; the number of calls in a cascade is limited to 8

The subroutines are assigned to a task, they can only be called from that particular task

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Principle Subroutine performance principle:

Subroutine Module

SR10

Call SR10

Standard instructions

Subroutine Module

SR12

Call SR10

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Standard instructions

Subroutine return

General

Structure

The subroutine return instruction is reserved for the subroutine modules and is used for returning to the calling module, if the Boolean result from the previous test instruction is set to 1.

Ladder language

%M8

<RETURN>

Rules of use

Instruction list language

LD %M8

RETC

Structured text language

IF %M8 THEN

RETURN ;

END_IF;

Instruction list language incorporates the following additional instructions: l RETCN : return of the subroutine if the Boolean result from the previous test instruction is set to 0.

l RET : unconditional return of the subroutine.

The subroutine return instruction is implicit at the end of each subroutine, but can be used for returning to the calling module before the end of the subroutine.

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Examples Ladder language

%MW5>3

%M8

<RETURN>

%MD26:=%MW4*%KD6

Standard instructions

Instruction list language

LD [%MW5>3]

RETC

LD %M8

[%MD26:=%MW4*%KD6]

Structured text language

IF (%M5>3) THEN

RETURN ;

END_IF;

IF %M8 THEN

%MD26:=%MW4*%KD6;

END_IF;

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Standard instructions

Jump in the program

General

Structure

Ladder

%M8

%I1.0

%L10

%M20

%I1.0

Jump instructions are used to go to a programming line with an %Li label address: l l

JMP : unconditional program jump

JMPC : program jump if the instruction’s Boolean result from the previous test is set at 1 l JMPCN : program jump if the instruction’s Boolean result from the previous test is set at 0. %Li is the label of the line to which the jump has been made (address i from 1 to 999 with maximum 256 labels)

JUMPC

%L10

%Q2.5

%M5

Instruction list language

LD %M8

JMPC %L10

LD %I1.0

ST %Q2.5

Jump to label

%L10, if %M8 =1

----------

%L10:

LD %M20

ST %M5

LD %I1.0

AND %I1.2

ST %Q2.1

%I1.2

%Q2.1

Structured text language

IF %M8 THEN

JUMP %L10;

END_IF;

%Q2.5:=%I1.0;

------

%L10:

%M5:=%M20;

%Q2.1:=%I1.0 AND %I1.2;

Jump to label %L10 if %M8=1

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Ladder

%M2

%I2.0

JUMPCN

%L20

%Q3.5

Standard instructions

Instruction list language

LD %M2

JMPCN %L20

LDN %I2.0

ST %Q3.5

----------

%L20:

LD %M30

ST %M6

Jump to label

%L20, if %M2=0

%L20

%M30

Strctured text language

IF NOT %M2 THEN

JUMP %L20;

END_IF;

%Q3.5:=NOT%I2.0;

------

%L20:

%M6:=%M30;

Jump to label %L10 if %M8=1

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Standard instructions

JMP

Ladder

%L40

%Q3.5

%L20

%I2.1

%L40

%M20

Instruction list language

JMP %L40

%L20:

LD %I2.1

ST %Q3.5

---------

%L40:

LD %M20

ST %M5

Unconditional jump to label %L40

Rules

Structured text language

JUMP %L40;

%L20

%Q3.5:=%I2.1;

Unconditional jump to label %L40

------

%L40:

%M5:=%M20; l A program jump takes place inside one particular programming entity (a master task MAIN module, subroutine %SRi, etc.) l A program jumps to a downstream or upstream programming line

If it is an upstream jump, close attention should be paid to the program execution time: the program execution time is then extended and can lead to a task period overrun for the task including the upstream jump.

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Standard instructions

End of program instructions

General The END, ENDC and ENDCN instructions can be used to define when the program l l l cycle ends:

END : unconditional end of program

ENDC : end of program if Boolean result of the previous test instruction is 1

ENDCN : end of program if Boolean result of the previous test instruction is 0.

Note: The instructions END , ENDC and ENDCN must not be used in program sections for Premium and Micro PLCs. They must under all circumstances be replaced by the instructions JMP, JMPC and JMPCN respectively with a jump to an end of program tag. No compliance check is performed by the PL7 programming software

Rules

Example

By default (normal mode), when the end of program instruction is activated, the outputs are updated and the PLC moves onto the next cycle.

If polling is periodic, the outputs are updated, and the PLC waits until the end of the period and then moves onto the next cycle.

Note: These instructions can only be used in Instruction List language in the master task.

Instruction List language

Example 1 :

LD %M1

ST %Q2.1

LD %M2

ST %Q2.2

-------

END

Example 2 :

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Standard instructions

LD %M1

ST %Q2.1

LD %M2

ST %Q2.2

------

LD %I2.2

ENDC

LD %M2

ST %Q2.2

------

END l l

If %I1.2 = 1, polling of program ends

If %I1.2 = 0, polling continues until the next END instruction

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Standard instructions

Program stop

General

Structure

The HALT instruction in an application program is used to stop its execution

(stopping all the tasks). Yhis has the effect of freezing the variable objects of this program.

To restart a program stopped in the aforementioned manner, it must be initialized

(using the PL7 INIT command). The instructions following the HALT instruction are then not executed.

Ladder language

%M10

<HALT>

Instruction list language

LD %M10

HALT

Structured text language

IF %M10 THEN

HALT ;

END_IF;

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Standard instructions

Event masking/unmasking instructions

General

Structure

The masking/unmasking instructions are used to mask or unmask all the events which activate event tasks.

l MASKEVT : global event masking. The events are stored by the PLC, but the associated event tasks remain inactive whilst the masking operation is enabled l

(until the next UNMASKEVT instruction).

UNMASKEVT : global event unmasking. The events that were stored during the masking period are processed. The event processing mechanism is operational until the next MASKEVT instruction.

Ladder language

%M0

MASKEVT()

%M8

UNMASKEVT()

Instruction list language

LD %M0

[MASKEVT()]

LD %M8

[UNMASKEVT()]

Structured text language

IF %M0 THEN

MASKEVT() ;

END_IF;

IF %M8 THEN

UNMASKEVT() ;

END_IF;

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Standard instructions

NOP Instructions

General The NOP instruction does not perform any action. It is used to "reserve" lines in a program and thus makes it possible to write instructions without any modification of line numbers.

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Standard instructions

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Advanced instructions

Introduction

Contents of this section

This section describes the advanced instructions for PL7 language.

What's in this

Chapter?

This Chapter contains the following Sections:

2.8

2.9

2.10

2.11

2.12

2.13

Section

2.1

2.2

2.3

2.4

2.5

2.6

2.7

Topic

Introduction to advanced instructions

Advanced predefined function blocks

Shift instructions

Floating point instructions

Numerical conversion instructions

Word table instructions

Character string instructions

Time management instructions: Dates, Times, Duration

Bit table instructions

"Orpheus" functions: Shift registers, counter

Timing functions

Data storage functions

Grafcet functions

Page

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Advanced instructions

2.1 Introduction to advanced instructions

Introduction to the advanced instructions

General

Instruction families

The instructions described in this chapter are intended for advanced programming needs.

They have the same effects in any language. Only the syntax is different.

These are: l l either standard software instructions, or functions considered as extensions of the software.

Instructions for the Function type ranges are used to enhance the basic software l l using specific programming instructions.

Operations on character strings, word tables, etc.

Task functions: Communication, Regulation, Operator dialog, etc.

l l l l l l

They consist of the following families:

Character strings,

Integer tables,

Managing dates, times, periods,

Conversions,

Bit tables,

"Orpheus" functions.

l l l l

The following families are described in the tasks concerned:

Communication,

Regulation,

Operator dialog,

Movement command.

Note: Function type instructions imply additional application memory occupation

(only when they are actually used in the program). This memory occupation is to be taken into account by the programmer for each function, whatever their user number, and this is in accordance with the maximum memory size of the reserve

PLC.

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2.2 Advanced predefined function blocks

Advanced instructions

Introduction

Aim of this subsection

What's in this

Section?

This sub-section describes PL7 language advanced predefined function blocks

This Section contains the following Maps:

Topic

Introduction to Monostable function block

Monostable block function operation

Configuring and programming monostable function blocks

Introduction to Register function block

Programming and configuring the Register block function

Introduction to the Cyclic Programmer (Drum) function block

Cyclic Programmer (Drum) function block operation

Programming and configuring the cyclic programmer function block (Drum)

Introduction to Timer function block series 7

Timer function block series 7 operation

Programming the series 7 timer in "Delay on engagement" mode

Programming the series 7 timer in "Delay on release" mode

Programming the series 7 timer in "Delay accumulated on engagement" mode

Programming the series 7 timer in "Delay accumulated on release" mode

Introduction to the vertical comparison operation block

Operation of vertical comparison operation block

Page

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Advanced instructions

Introduction to Monostable function block

General

Illustration

The monostable function block is used to create a pulse of precise duration. This duration is programmable and may or may not be modifiable using the terminal

Graphic representation of the monostable function block

%MNi

TB: 1mn

MN.P:9999

MODIF:Y

Characteristics Characteristics of the monostable function block

Characteristic Address

Number %MNi

Time base

Current value

%MNi.V

Preset value

MODIF modification

Input "Start" (or instruction)

Output

"Monostable"

Value

0 to 7 for a TSX 37, 0 to 254 for a TSX 57

1min, 1s, 100ms, 10ms (1mn by default)

%MNi.P

Y/N

S (Start)

Word which decreases from %MNi.P to 0 on completion of the timer cycle. May be read, tested but not written.

≤

%MNi.P

≤

9999 . Word which can be read, tested and written. The pulse period (PRESET) is equal to: %MNi.P x

TB l l

Y: possibility to modify the preset value in adjust mode

N: cannot be accessed in adjust mode

On the rising edge %MNi.V = %MNi.P then %MNi.V decreases to 0

R (Running) The associated %MNi.R bit is at 1 if %MNi.V > 0

(monostable "elapsing") %MNi.R = 0 si %MNi.V = 0

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Advanced instructions

Monostable block function operation

General

Illustration

The monostable function block is used to generate a pulse of precise duration.

Timing diagram illustrating the monostable operation

(1) (1)

Input “start” S : S

(1) (1)

Current value

%MNi.V :

Output “running” R :

%MNi.P

%MNi.V

(3)

(2)

(3)

(2)

PRESET

(4)

PRESET (4)

(3)

(2) (2)

PRESET

(4)

Operation Description of monostable operation

Phase

Description

From the appearance of a rising edge on the monostable S input, the current value %MNi.V takes the preset value %MNi.P

The current value %MNi.V decreases to 0 by one unit at each pulse of the time base TB.

The output bit %MNi.R (Running) associated with the R output moves to state

1 when the current value %MNi.V is different from 0.

When the current value %MNi.V = 0, the output bit %MNi.R returns to state 0.

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Advanced instructions

Configuring and programming monostable function blocks

Example

Configuration

Programming

Flashing for variable cyclic periods: the preset value of each monostable defines the duration of each pulse.

%Q3.0

5s 5s

2s 2s l l l

The following parameters are to be entered in the variables editor:

TB: 1mn, 1s, 100ms, 10ms or 1 ms (100ms in this example)

%MNi.P: 0 à 9999 (%MN0.P = 50 et %MN1.P = 20 in this example

MODIF: Y or N

Ladder

%MN1.R

%Q3.0

%MN0

%MN0.R

%MN1

Instruction list language

LDN %MN1.R

S %MN0

LD %MN0.R

ST %Q3.0

LDN %MN0.R

S %MN1

Structured text language

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Observations

Specific cases

Advanced instructions

%M0:=NOT %MN1.R;

IF RE %M0 THEN

START %MN0 ;

END_IF;

%Q3.0:= %MN0.R

;

%M1:=NOT %MN0.R

;

IF RE %M1 THEN

START %MN1 ;

END_IF;

In the example below, the output %Q3.0 is set at state 1 for 5s (%MN0.P) and reset at state 0 for 2s (%MN1.P).

l l

In structured text language, the instruction START%MNi is used to initiate execution of the monostable function block. This instruction forces a rising edge on the S input of the block, which has the effect of resetting the function block.

Use of this instruction must therefore be pulse-based.

The monostable function may also be carried out by the %TMi function block in

TP mode (See

Operation of timer function block %TMi in TP mode, p. 37).

l l l l l

Incidence of a "cold restart" : (%S0 = 1) loads the preset value %MNi.P in the current value %MNi.V. Since the preset value, which may have been altered by the terminal, has been lost, the ouput %MNi.R is reset to 0.

Incidence of a "warm restart" : There is no incidence of (%S1) on the current value of the monostable (%MNi.V).

Incidence of a switch into stop mode, deactivation of the task and breakpoint : the switch of the PLC into stop mode does not freeze the current value. The same applies when the current task is deactivated or on execution of a breakpoint.

Incidence of a program jump : Not polling the network in which the monostable block is programmed does not freeze the current value %MNi.V which continues to decrease to 0. Similarly, the %MNi.R bit associated to the monostable block output maintains its normal operation and can thus be tested on another network.

However the spools which are directly connected to the block output (ex %Q3.0) are not activated since they are not examined by the PLC.

Test of %MNi.R bit : this bit can change state during its cycle.

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Advanced instructions

Introduction to Register function block

General

Illustration

A register is a memory block which is used to store up to 255 words of 16 bits in two l l different ways: queue (first in, first out) called FIFO stack (First In, First Out) queue (last in, first out) called the LIFO stack (Last In, First Out)

The following is the graphic presentation of the register function block:

%Ri

MODE:LIFO

LEN:16

Characteristics Characteristics of the Register function block:

Characteristic Address Value

Number

Mode

Length

%Ri 0 to 3 for a TSX 37, 0 to 254 for a TSX 57

FIFO LIFO Stack Queue (choice by default)

LEN Number of words of 16 bits (1< LEN< 255) making up the register memory block.

Input word

Output word

Input (or instruction)

"Store"

Input (or instruction)

"Destore"

%Ri.I

%Ri.O

I (In)

O (Out)

Access word for register. May be read, tested and written.

On a rising edge, causes an information word to be stored in the word %Ri.O

On a rising edge, causes the contents of the word %Ri.I to be stored

On a rising edge, causes an information word to be stored in the word %Ri.O

Input (or instruction)

"Resetting to zero"

R (Reset) At state 1, initiates the register

Output "Empty" E (Empty) E associated %Ri.E bit indicates that the register is empty.

May be tested.

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Advanced instructions

Characteristic Address

Output "Full" F (Full)

Value

The associated %Ri.F bit indicates that the register is full.

May be tested.

Note: When the two inputs I and O are activated simultaneously, storage is carried out before the destocking.

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Advanced instructions

Register function block operation in FIFO mode

General

Operation

In FIFO mode (First IN – First Out), the first information input in the register stack is the first output.

This table describes the operation of the FIFO mode

Step

Description

On a rising edge on the input I or on activation of instruction I, the content of the previously loaded input word %Ri.I is stored at the top of the

20 %Ri.I

20

80

60

50

stack. When the stack is full, loading is impossible and the system bit %S18 switches to 1.

On a rising edge on the input O or on activation of instruction O, the information word which is lowest in the queue is stored in the output word %Ri.O.

20

80

60

50 %Ri.O

50

3 Once the word has been transferred into

Ri.O, the contents of the register are shifted

80

down one step. When the register is empty

60 %Ri.O

50

(output E=1) destocking is impossible. The output word %Ri.O moves no more and maintains its value. The stack can be reset at any time (state 1 on input

R or activation of instruction R).

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Advanced instructions

Register function block operation in LIFO mode

General

Operation

In LIFO mode (Last In - First Out), the last information input in the register stack is the first output.

This table describes the operation of the LIFO mode

Step

Description

On a rising edge on the input I or on activation of instruction I, the contents of the previously loaded input word %Ri.I is stored at the top of the stack.

When the stack is full, loading is impossible and the system bit %S18 switches to 1.

20 %Ri.I

2 On input O rising edge or on instruction O activation, the information word which is highest in the stack (last input information) is stored in the output word %Ri.O.

20

80

50

As soon as the word is transferred into Ri.O, the following register word is available. When the register is empty (output E=1) destocking is impossible. The output word

%Ri.O moves no more and maintains its value. The stack

80

60

50

can be reset at any time (state

1 on input R or activation of instruction R).

20

80

60

50

20 %Ri.O

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Advanced instructions

Programming and configuring the Register block function

Example

Configuration

Programming

The following example shows the loading of %R2.I with the word %MW34 on request from input %I1.2, if the register R2 is not full (%R2.F=0). The input request to the register is assured by %M1. The output request is made by input %I1.3 and the storage of %R2.O in %MW20 is carried out if the register is not empty

(%R2.E=0).

The following parameters are to be entered in the configuration editor: l l

Number: 1 to 4 for a TSX 37, 1 to 255 for a TSX 57

Length: 1 to 255

The operation mode (FIFO or LIFO) is to be entered in the variables editor.

Ladder

%R2

%M1

%I1.3

%I1.3 %R2.E

%MW20:=%R2.O

%I1.2 %R2.F

%R2.I:=%MW34

%M1

Instruction list language

LD %M1

I %R2

LD %I1.3

O %R2

LD %I.3

ANDN %R2.E

[%MW20:= %R2.O

]

LD %I.2

ANDN %R2.F

[%R2.I:=%MW34]

ST %M1

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Advanced instructions

Note

Specific cases

Structured text language

IF RE %M1 THEN

PUT %R2 ;

END_IF;

IF RE %I1.3 THEN

GET %R2 ;

END_IF;

IF (%I1.3 AND NOT %R2.E

) THEN

%MW20:= %R2.O

;

END_IF;

%M1:=%I1.2 AND NOT %R2.F

;

IF %M1 THEN

%R2.I

:=%MW34;

END_IF;

In structured text language, 3 instructions are used to program the register function blocks: l l l

RESET

PUT

GET

%Ri: Initialize register

%Ri: Causes the content of word %R.I to be stored in the register.

%Ri: Causes an information word to be stored in word %Ri.O

The instructions PUT and GET create a rising edge, on the function block inputs I and O respectively. Use of this instruction must therefore be pulse-based l l l

Incidence of a "cold" restart : (%S0=1) initializes the contents of the register.

The output bit %Ri.E associated with the output E is set to 1.

Incidence of a "warm" restart : There is no incidence of (%S1=1) on the l l contents of the register, or on the status of the output bits.

On reset to 0 (input R or instruction R)

In ladder, the input I and O logs are updated with the wired values.

In instruction list language, the input I and O logs are not updated: each retains the value which it had before the call.

In structured text language, the input I and O logs are updated with 0.

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Advanced instructions

Introduction to the Cyclic Programmer (Drum) function block

General

Illustration

With a similar operating principle to the cam programmer, the cyclic programmer changes step according to external events. At each step, the upper point of a cam gives a command processed by the automatic operation In the case of a cyclic programmer, these upper points are symbolized by a state 1 at the level of each step and are assigned to the output bits %Qi.j or internal bits %Mi called the command bits.

Graphic representation of the Cyclic Programmer function block (Drum)

%DRi

%TB:1mn

LEN:16

Characteristics Characteristics of the cyclic programmer function block

Characteristic

Number

Number of steps

Time base

Time out or duration of current step

Address

%DRi

LEN

%DRi.V

Number of step in progress

%DRi.S

Input "return to step

R (RESET)

Input "advance" U (UP)

Value

0 to 7 for a TSX 37, 0 to 254 for a TSX 57

1 to 16 (16 by default).

1mn, 1s, 100ms, 10ms (1mn by default).

0 ≤ %DRi.V

≤ 9999 . Word which can be reset to zero at each change of step. May be read, tested but not written. The pulse period is equal to %DRi.V x TB

0 ≤ %Di.S

≤ 15 . Word which can be read and tested.

Can only be written from an immediate value.

At state 1, initialize the programmer at step 0

Output F (FULL)

On rising edge, causes the programmer to advance one step and the command bits to be updated.

Indicates that the last defined step is in progress. The associated %DRi.F bit can be tested (%DRi.F=1 if

%DRi.S=number of configured steps -1).

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Characteristic

Status of a step

Command bits

Address

%DRi.Wj

Advanced instructions

Value

16 bit word defining the status of step j of the programmer i. May be read, tested but not written.

Outputs or internal bits associated with the step (16 command bits)

Note: The %S18 bit switches to 1, if an unconfigured step is written.

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Advanced instructions

Cyclic Programmer (Drum) function block operation

General

Illustration

The cyclic programmer comprises: l a matrix of constant data (cams) organized in columns: in steps from 0 to N-1 (N being the number of configured steps), each column gives the status of the step l in the form of 16 pieces of binary information listed from 0 to F, a list of command bits (1 per line) corresponding to the outputs %Qxy.i or to the internal bits %Mi. When a step is in progress, the command bits take the binary status defined for this step.

The table below summarizes the main characteristics of the cyclic programmer

(programmer configured with 16 steps)

BIT

%DRO Nbr pas : 16

Step

0 1 2 3 4 5 6 7 8 9 10 11 12130 14 15

0 1 0 0 0 0 0 1 0 0 0 0 1 0 0 0 %Q2.1

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 %Q2.3

1 1 0 0 0 0 0 0 1 0 1 0 0 1 0 0 %Q3.5

0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 %M0

0 0 1 0 1 0 0 0 0 0 0 0 1 1 1 0 %M10

0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 %Q2.6

0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 0 %Q2.7

1 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 %Q2.8

0 0 0 0 1 0 0 0 0 1 0 0 1 0 0 0 %M20

0 0 1 0 1 0 0 0 0 0 0 1 0 0 0 0 %M30

0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 %Q2.9

0 1 0 0 0 0 0 0 1 1 0 0 0 0 0 1 %Q3.6

1 1 0 0 0 0 0 0 1 0 0 0 1 0 0 0 %M5

1 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 %M6

0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 %M7

Address

Control Bits

OK Cancel

In the example below, for step 1, the command bits %Q2.1;%Q3.5

;%Q2.8;%Q3.6;%M5 and %M6 are set at state 1; the other command bits are set at

Diagram of operation

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Advanced instructions

Input

No. not %DRi.S

0 1 2 3

Output %DRi.F

Time envelope

%DRi.V

N-1 0 1 2 0 1

The number of the step in progress is incremented at each rising edge on the input

U (or activation of instruction U). This number may be modified by program.

Advanced instructions

Programming and configuring the cyclic programmer function block (Drum)

Example

Configuration

In this example, the first 5 outputs from %Q2.0 to %Q2.4 are activated one after the other, each time the input %I1.1 is set to 1. The input I1.0 resets the outputs at step

l l l

The following information is defined in the variables editor: number of steps: (LEN:5), time base (TB: 1mn), state of outputs (command bits) for each step of the programmer.

Step:

0 1 2 3 4

0 : 1 0 0 0 0 %Q2.0

1 : 0 1 0 0 0 %Q2.1

Bits : 2 : 0 0 1 0 0 %Q2.2

3 : 0 0 0 1 0 %Q2.3

4 : 0 0 0 0 1 %Q2.4

Programming Ladder language

%I1.0

%I1.1

%DR1

%TB:1mn

LEN:5

%Q2.8

Instruction list language

LD %I1.0

R %DR1

LD %I1.1

U %DR1

LD %DR1.F

ST %Q2.8

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Advanced instructions

Observations

Structured text language

IF %I1.0 THEN

RESET %DR1 ;

END_IF;

IF RE %I1.1 THEN

UP %DR1 ;

END_IF;

%Q2.8:= %DR1.F

; l l

In structured text language, 2 instructions are used to program the cyclic programmer function blocks:

RESET %DRi: Initialize the programmer to step 0,

UP %DRi: Causes the programmer to advance one step and the command bits to be updated. This instruction creates a rising edge on the function block input

U; its use must therefore be pulse-based.

l l

Note: On reset to 0 (input R, instruction R or instruction RESET):

In ladder language, the input U archive is updated with the connected values.

In instruction list language, the input U archive is not updated; it retains the values it had before the call.

l In structured text language, the U archive is updated with 0.

Specific cases l l l l

Incidence of a "cold restart": (%S0=1) resets the programmer to step 0 (and updates the command bits).

Incidence of a "warm restart": (%S1=1) resets the command bits, according to the step which is in progress.

Incidence of a program jump, deactivation of the task and breakpoint: not polling the cyclic programmer does not cause the command bits to reset to 0.

The command bits : are only updated when the step changes or on a warm or cold restart.

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Advanced instructions

Introduction to Timer function block series 7

General

Illustration

This timer function block which is compatible with blocks of series 7 PL7-2/3 is used to give timed commands for specific actions. This value of this time delay is programmable and can be modified if necessary by the terminal.

Graphic representation of the timer function block series 7

%Ti

TB : 1mn

T.P:9999

MODIF:Y

Characteristics

Characteristic

Number

Time base

Current value

Preset value

Characteristics of the timer function block series 7

Address

%Ti

%Ti.V

%Ti.P

MODIF modification Y/N

Input "Activation"

Input "Control"

Output "Timer cycle complete"

E(Enable)

C(Control)

D(Done)

R(Running)

Value

0 to 63 for a TSX 37, 0 to 254 for a TSX 57

1min, 1s, 100ms, 10ms (1mn by default)

Word which decreases from %Ti.P to 0 on completion of the timer cycle. May be read, tested but not written.

≤

%Ti.P

≤

9999 . Word which can be read, tested and written. Is set at the value of 9999 by default. The pulse period is equal to %Ti.P x TB.

l l

Y: possibility to modify the preset value in adjust mode.

N: cannot be accessed in adjust mode.

At state 0, reset the timer %Ti.V = %Ti.P.

At state 0, freeze the current value %Ti.V.

The associated bit %Ti.D = 1, if the timer cycle is complete %Ti.V = 0.

The associated bit %Ti.R = 1, if the timer %Ti.P > %Ti.V > 0 and if input C is at state 1.

Note: The function blocks %Ti are not programmable in an instruction list; however the block items %Ti

(%Ti.V, %Ti.P, %Ti.D and %Ti.R) can be accessed. The total number of %Tmi + %Ti must be less than

64 on the TSX 37 and 255 on the TSX 57.

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Advanced instructions

Timer function block series 7 operation

General

Illustration

Operation

The timer runs when its 2 inputs (E and C) are at state 1. It works as a down counter

Diagram of operation of the series 7 timer

%Ti.P

%Ti.V

%Ti.D

%Ti.R

%Ti.V

%Ti.P

%Ti.D

%Ti.V

%Ti.P

%Ti.V

%Ti.P

%Ti.R

0 1

1 1

0 1

%Ti.V

frozen

%Ti.V

fall in

%Ti.P -> 0

0 1 if Time elapsed

0 1 if Time in progress

Description of operation

Phase

Description

The current value %Ti.V decreases by one unit from the preset value %Ti.P to

0 at each pulse of the time base TB.

The output bit %Ti.R (Timer in progress) associated with the R output is then at state 1, the output bit %Ti.D (Timer cycle complete) associated with the D output is at state 0,

When the current value %Ti.V=0, %Ti.D changes to state 1 and %Ti.R returns to state 0.

TLX DR PL7 xxE

Advanced instructions

Instructions l l l

In structured text language, 3 instructions are used to program the timer function blocks %Ti

PRESET %Ti: Resets the timer

START %Ti: Starts the timer cycle

STOP %Ti: Freezes the current value of the timer

100

TLX DR PL7 xxE

Programming the series 7 timer in "Delay on engagement" mode

Advanced instructions

General

Illustration

The "Timer" function block can carry out different functions, according to how it has been programmed. The "delay on engagement" function is described here

Diagram of operation of the "delay on engagement" function

%I1.0 = E, C

D = %Q2.0

PRESET PRESET

Programming Programming in ladder language

%I1.0

%T0

TB : 1mn

%Ti.P=3

MOD:N

%Q2.0

Programming in structured text language

IF %I1.0 THEN

START %T0 ;

ELSE

PRESET %T0 ;

END_IF;

%Q2.0:= %T0.D

;

TLX DR PL7 xxE

101

Advanced instructions

Programming the series 7 timer in "Delay on release" mode

General

Illustration

The "Timer" function block can carry out different functions, according to how it has been programmed. The "delay on release" function is described here.

Diagram of operation of the "delay on release" function

%I1.1

E, C

PRESET

%Q2.1

Programming Programming in ladder language

%I1.1

%T7

TB : 1s

%Ti.P=120

MOD:N

%Q2.1

Programming in structured text language

IF %I1.1 THEN

PRESET %T7 ;

ELSE

START %T7 ;

END_IF;

%Q2.1:=NOT %T7.D

;

102

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Advanced instructions

Programming the series 7 timer in "Delay accumulated on engagement" mode

General

Illustration

The "Timer" function block can carry out different functions, according to how it has been programmed. The "delay accumulated on engagement" function is described here.

Diagram of operation of the "delay accumulated on engagement" function

%I1.2 = E

%I1.3 = C

%Q2.5 = R

D1 D2 D3

%Q2.4 = D

Programming

PRESET = D1+D2+D3

Programming in language data

%I1.2

%I1.3

%T5

TB : 1mn

%Ti.P=3

MOD:N

%Q2.1

%Q2.5

Programming in structured text language

TLX DR PL7 xxE

103

Advanced instructions

IF %I1.2 THEN

IF %I1.3 THEN

START %T5 ;

ELSE

STOP %T5 ;

END_IF;

ELSE

PRESET %T5 ;

END_IF;

%Q2.4:= %T5.D

;

%Q2.5:= %T5.R

;

104

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Advanced instructions

Programming the series 7 timer in "Delay accumulated on release" mode

General

Illustration

The "Timer" function block can carry out different functions, according to how it has been programmed. The "delay accumulated on release" function is described here.

Diagram of operation of the "delay accumulated on release" function

%I1.0

%I1.1

%Q2.1

D1 D2 D3

PRESET = D1+D2+D3

Programming Programming in language data

%I1.0

%I1.1

%T12

TB : 10mn

%Ti.P=40

MOD:Y

%Q2.4

Programming in structured text language

TLX DR PL7 xxE

105

Advanced instructions

IF %I1.0 THEN

PRESET %T12 ;

ELSE

IF %I1.1 THEN

STOP %T12 ;

ELSE

START %T12 ;

END_IF;

%Q2.4:=NOT %T12.D

;

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Introduction to the vertical comparison operation block

General

Illustration

The vertical comparison block is used to compare 2 operands (OP). These 2 operands are words of 16 possibly indexed bits, or words of immediate value.

The number of vertical comparison blocks is not limited and is not enumerated.

Graphic representation of the vertical comparison operation block

COMPARE

OP1

OP2 <

Characteristics Characteristics of the vertical comparison operation block

Characteristic

Command input

Output "Greater"

Output "Equal"

Output "Less"

Output "Different"

Operand number 1

Operand number 2

Address Value

EN At state 1, compares the two operands.

> Is at state 1 if the content of the OP1 is greater than that of

OP2.

OP1

OP2

Is at state 1 if the content of the OP1 is equal to that of OP2.

Is at state 1 if the content of the OP1 is less than that of

OP2.

Is at state 1 if the content of the OP1 is different from that of OP2.

This operand is a single length word object (it may be indexed).

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Operation of vertical comparison operation block

Operation

Example

Setting the command input to 1 compares the two operands; the four outputs are activated according to the result of the comparison. Setting the command input to 0 sets the activated outputs to zero.

The program below shows the comparison of the word %MW2 indexed by the word

%MW40 and of the immediate value of 150. In this case where the content of

%MW2[%MW40] is greater than 150 and if %I1.3 = 1, spool %Q2.7 is commanded.

If the content is equal to 150, spool %MW10:X4 is commanded. Spool %M5 is only controlled if the content is different from 150 (< or >).

Ladder language

EN >

%I1.3

%Q2.7

%MW10:X4

%MW2

[%MW40]

150

%M5

Note: This function block does not exist in instruction list language or in structured text language. Use the comparison operations >, <, =, <>.

Specific cases l l

Incidence of a "cold" restart: (%S0) resets the operand OP1 and possibly OP2

(if OP2 is an internal word) to zero, the outputs are activated according to the comparsion with the new values.

Incidence of a "warm" restart: There is no incidence of (%S1) on the comparison block.

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2.3 Shift instructions

General The shift instructions involve moving the bits of a word or double word operand by a number of positions to the right or left. There are two types of shift: l the logic shift: l l

SHL(op2,i) logic shift of i positions towards the left.

SHL(op2,i) logic shift of i positions towards the right.

l the rotate shift: l ROL(op2,i) rotate shift of i positions towards the left.

l ROL(op2,i) rotate shift of i positions towards the right.

If the operand which is to be shifted is a simple length operand, the variable i will be between 1 and 16. If the operand which is to be shifted is a double length operand, the variable i will be between 1 and 32. The state of the last output bit is memorized in the %S17 bit.

Illustration of the two types of shift:

Logic shift Rotate shift

15 (ou 31) 0 0

%S17

15 (ou 31) 0

%S17

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Structure Ladder language:

%MW0:=SHL(%MW10,5)

%MW10:=ROR(%KMW9,8)

Syntax

Instruction list language:

LDR %I1.1

[%MW0:= SHL(%MW10,5) ]

Structured text language:

IF RE%I1.2 THEN

%MW10:= ROR(%KW9,8) ;

END_IF;

Operators: SHL, SHR, ROL, ROR

Operands:

Type Operand 1 (Op1)

Words which can be indexed %MW

Words which can not be indexed

Double words which can be indexed

Operand 2 (Op2)

%MW, %KW, %Xi.T

%QW, %SW, %NW, %BLK Imm.val., %IW, %QW, %SW,

%NW, %BLK, Expr. num.

%MD %MD, %KD

Double words which can not be indexed

%QD, %SD Imm.val., %ID, %QD, %SD,

Expr. num.

Syntax: Op1:=Operator(Op2,i)

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2.4 Floating point instructions

Introduction

Aim of this subsection

What's in this

Section?

This sub-section describes PL7 language floating point instructions.

This Section contains the following Maps:

Topic

Floating point instructions

Floating point comparison instructions

Assign instructions on the floating point

Arithmetic instructions on a floating point

Logarithm and Exponential Instructions

Trigonometric Instructions

Conversion instructions

Rounding off a floating point value in ASCII format

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Advanced instructions

Floating point instructions

General Operations on floating objects can be carried out with PL7 software.

The floating format used is the standard IEEE STD 734-1985 (equivalent IEC 559).

The length of the words is 32 bits, which corresponds to the single decimal point floating numbers.

The floating values can be represented with or without exponent; they must always have a decimal point (floating point).

Examples of floating values: without exponent: 1285.28 with exponent: 1.28528e3

Floating values range from -3.402824e+38 and -1.175494e-38 to 1.175494e-38 and

3.402824e+38 (grayed out values on the diagram). They also have the value 0,

written 0.0

-1.#INF -1.#DN 1.#DN 1.#INF

-3.402824e+38 -1.175494e-38

+1.175494e-38 +3.402824e+38

When a calculation result is between -1.175494e-38 and 1.175494e-38, it is rounded off to 0. A value within this range cannot be entered as a floating point value if it is entered in another format; the symbol 1.#DN or - 1.#DN will be displayed.

l l

When a calculation result is: less than -3.402824e+38, the symbol -1.#INF (for -infinite) is displayed greater than +3.402824e+38, the symbol 1.#INF (for +infinite) is displayed

When the result of an operation is undefined (for example square root of a negative number), the symbol 1.#NAN or -1.#NAN is displayed.

When the result is not within the valid range, the system bit %S18 is set to 1.

The status word %SW17 bits indicate the cause of an error in a floating operation:

Different bits of the word SW17:

%SW17:X0 Invalid operation, result is not a number (1.#NAN or -1.#NAN)

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%SW17:X1 Non-standardized operand (between -1.175494e-38 and 1.175494e-38), result is rounded off to 0.

%SW17:X2 Divided by 0, result is infinite (-1.#INF or 1.#INF)

%SW17:X3 Result greater in absolute value than +3.402824e+38, result is infinite (-1.#INF or 1.#INF)

%SW17:X4 Result less than 1.175494e-38, result is 0.

%SW17:X5 Imprecise result

This word is reset to 0 by the system on cold start, and also by the program for reusage purposes.

Representation precision is 2-24. To display floating point numbers, it is unnecessary to display more than 6 digits after the decimal point.

Note: l the value "1285" is interpreted as a whole value; in order for it to be recognized as a floating point value, it must be written thus: "1285.0" l instructions for Integer <--> Floating conversion are used to move from one format to another.

Addressing floating objects

Abbreviations Complete addressing

Imm.val.

%MF

%KF

%MFi

%KFi

Type of floating point

Access

Immediate values R

Internal floating point R/W

Floating constant value

Indexed form

%MFi[index]

%KFi[index]

Possibility of overlap between objects:

Single, double length and floating words are stored inside the data space in one memory zone. Thus, the floating word %MFi corresponds to the single length words

%MWi and %MWi+1 (the word %MWi containing the least significant bits and the word %MWi+1 the most significant bits of the word %Mfi).

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Illustration:

%MF1

%MF0

%MF2

%MW0

%MW1

%MW2

%MW3

%MF3

%MFi

%MWi

%MWi+1

Example:

%MF0 corresponds to %MW0 and %MW. %KF543 corresponds to %KW543 and

%KW544.

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Floating point comparison instructions

General

Structure

The comparison instructions are used to compare two operands.

<> test if operand 1 is above operand 2, test if operand 1 is above or equal to operand 2, test if operand 1 is below operand 2, test if operand 1 is below or equal to operand 2, test if operand 1 is equal to operand 2, test if operand 1 is different from operand 2

The result is at 1 when the requested comparison is true.

Language data

%Q2.3

%M0

%MF10>129.7

%MF10<KF35

%I1.2

%Q2.2

%Q2.4

%MF30>=MF40

The comparison blocks program themselves in the test zone

Instruction list language

LD [%MF10>129.7]

ST %Q2.3

LD %M0

AND [%MF10<KF35]

ST %Q2.2

LD %I1.2

OR [%MF30>=MF40]

ST %Q2.4

The comparison is made inside the fasteners behind the LD, AND and OR instructions.

Structured text language

%Q2.3:= %MF10>129.7

;

%Q2.2:= (%MF20<%KF35) AND %M0;

%Q2.4:= (%MF30>=%MF40) OR %I1.2;

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Syntax Operators: >,>=,<,<=,=,<>

Operands:

Type Operands 1 and 2 (Op1 and Op2)

Floating points which can be indexed

%MF,%KF

Floating point which can not be indexed

Immediate floating point value, Digital floating point expression

Note: In instruction list language, the comparison instructions can be used within the brackets.

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Assign instructions on the floating point

General

Structure

The assignment operations can be performed on the following floating points: l l floating point (indexed) -> floating point (indexed). See e.g. 1 immediate floating point value -> floating point (indexed). See e.g. 2

Language data:

%MF10:=%KF100

%I3.2

%MF5:=%KF0[%MW20]

%I3.3

P %MF100:=150.25

Instruction list language:

E.g. 1

LD TRUE

[%MF10:=%KF10]

LD %I3.2

[%MF5:=%KF0[%MW20]]

E.g. 2

LDR %I3.3

[%MF100:=150.25]

Structured text language :

E.g. 1

%MF10:=%KF10 ;

IF %I3.2 THEN

%MF5:=%KF0[%MW20] ;

END_IF;

E.g. 2

IF RE %I1.3 THEN

%MF100:=150.25

;

END_IF;

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Syntax Operators: :=

Operands:

Type

Floating points which can be indexed

Floating point which can not be indexed

Operands 1 (Op1)

%MF

Syntax: Op1:=Op2

Operands 2 (Op2)

%MF, %KF

Immediate floating point value,

Digital floating point expression

Note: It is possible to perform multiple assignments. Example:

%MF0:=%MF2:=%MF4

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Arithmetic instructions on a floating point

General These instructions are used to perform an arithmetic operation between two operands or on one operand.

+ addition of two operands

subtraction of two operands multiplication of two operands division of two operands

SQRT

ABS square root of an operand absolute value of an operand

TRUNC whole part of a floating point value

Structure Ladder language

%M0

%MF0:=%MF10+129.7

%I3.2

%MF1:=SQRT(%MF10)

%I3.3

%I3.5

%MF2:=ABS(%MF20)

%MD8:=TRUNC(%MF2)

Instruction list language

LD %M0

[%MF0:=%MF10+129.7]

LD %I3.2

[%MF1:=SQRT(%MF10)]

LDR %I3.3

[%MF2:=ABS(%MF20)]

LDR %I3.5

[%MD8:=TRUNC(%MF2)]

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Syntax

Structured text language

IF %M0 THEN

%MF0:=%MF10+129.7

;

END_IF;

IF %I3.2 THEN

%MF1:=SQRT(%MF10) ;

END_IF;

IF %I3.3 THEN

%MF2:=ABS(%MF20) ;

END_IF;

IF %I3.2 THEN

%MD8:=TRUNC(%MF2) ;

END_IF

Operators and syntax of arithmetic instructions on floating point

Operators

+, - *, /

SQRT, ABS, TRUNC

Syntax

Op1:=Op2 Operator Op3

Op1:=Operator(Op2)

Note: When you perform an addition or subtraction between 2 floating point numbers, the two operands must comply with the condition: Op1

Op2

2 – 24 , where Op1>Op2. If this condition is not respected, the result is equal to operand 1

(Op1). This phenomenon is of little consequence in the case of an isolated operation, as the resulting error is very low ( 2

– 24

), but it can have unforeseen consequences where the calculation is repeated.

E.g. in the case where the instruction %MF2:= %MF2 + %MF0 is repeated indefinitely. If the initial conditions are %MF.0 = 1.0 and %MW2= 0, the value

%MF2 becomes blocked at 16777216.

We therefore recommend you take great care when programming repeated calculations. If, however, you wish to program this type of calculation, it is up to the client application to manage truncation errors.

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Rules of use

Advanced instructions

Operands of arithmetic instructions on floating point

Type

Words which can be indexed

Words which can not be indexed

Operand 1 (Op1)

%MF (1)

Operand 2 (Op2)

%MF, %KF

Immediate floating point value, Numeric floating point expr.

(1) %MD in the case of instruction TRUNC l l operations on floating point and integer values can not be directly mixed.

Conversion operations (See

Numerical conversion instructions, p. 130) convert

into one or other of these formats.

System bit %S18 is managed in exactly the same way as the operations on integers (See

Arithmetic instructions on integers, p. 57), the word %SW17 (See

Floating point instructions, p. 112) indicates the cause of the error.

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Logarithm and Exponential Instructions

General These instructions enable the user to perform logarithmic and exponential operations.

LOG

EXP

EXPT base 10 logarithm

Napierian logarithm natural exponential exponentiation of an actual by an actual

Structure Ladder language

%M0

%I3.2

%I3.3

%I3.4

%MF0:=LOG(%MF10)

%MF2:=LN(%MF20)

%MF4:=EXP(%MF40)

%MF6:=EXPT(%MF50,%MF52)

Instruction list language

LD %M0

[%MF0:=LOG(%MF10]

LD %I3.2

[%MF2:=LN(%MF20)]

LDR %I3.3

[%MF4:=EXP(%MF40)]

LDR %I3.4

[%MF6:=EXPT(%MF50,%MF52)]

Structured text language

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Syntax

Rules for Use

Advanced instructions

IF %M0 THEN

%MF0:=LOG(%MF10) ;

END_IF;

IF %I3.2 THEN

%MF2:=LN(%MF20) ;

END_IF;

IF %I3.3 THEN

%MF4:=EXP(%MF40) ;

END_IF;

IF %I3.4 THEN

%MF6:=EXPT(%MF50,%MF52) ;

END_IF;

Operators and syntax of the logarithmic and exponential instructions

Operators

LOG, EXP, LN

EXPT

Syntax

Op1:=Operator(Op2)

Op1:=Operator (Op2,Op3)

Operands of the logarithmic and exponential instructions

Type

Indexable words

Nonindexable words

Operand 1 (Op1) Operand 2 (Op2)

%MF %MF, %KF

Floating imm.value

Floating num. expr.

Operand 3 (Op3)

%MF

Floating imm.value

l l when the operand of the function is an invalid number (e.g.: logarithm of a negative number), it produces an indeterminate or infinite result and changes the bit %S18 to 1,the word %SW17 indicates the cause of the error (General (See

Floating point instructions, p. 112)).

in the case of logarithm functions, for the values near to 1.0 (between 0.99 and

1.0 or 1.0 and 1.01), the result will be equal to 0, the bits %S18 and %SW17:X5 are set to 1.

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Trigonometric Instructions

General These instructions enable the user to perform trigonometric operations.

SIN sine of an angle expressed as a radian,

ASIN arc sine (result within

2 and 2 )

ACOS arc cosine (result within 0 and

)

COS cosine of an angle expressed as a radian,

TAN tangent of an angle expressed as a radian,

ATAN arc tangent (result within

2 and 2 )

Structure Ladder language

%M0

%MF0:=SIN(%MF10)

%I3.2

%MF2:=TAN(%MF10)

%I3.3

%MF4:=ATAN(%MF20)

Instruction list language

LD %M0

[%MF0:=SIN(%MF10)]

LD %I3.2

[%MF2:=TAN(%MF10)]

LDR %I3.3

[%MF4:=ATAN(%MF20)]

Structured text language

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Syntax

Rules for Use

IF %M0 THEN

%MF0:=SIN(%MF10) ;

END_IF;

IF %I3.2 THEN

%MF2:=TAN(%MF10) ;

END_IF;

IF %I3.3 THEN

%MF4:=ATAN(%MF20) ;

END_IF;

Operators and syntax of trigonometric operations instructions

Operators

SIN, COS, TAN, ASIN,

ACOS, ATAN

Syntax

Op1:=Operator(Op2)

Operands of the trigonometric operations instructions:

Type

Indexable words

Non-indexable words -

Operand 1 (Op1) Operand 2 (Op2)

%MF %MF, %KF

Floating imm.value

Floating num. expr.

Advanced instructions l l l when the operand of the function is an invalid number (e.g.: arc cosine of a number greater than 1), it produces an indeterminate or infinite result and changes bit %S18 to 1, the word %SW17 (See

Floating point instructions, p. 112)

indicates the cause of the error.

the functions SIN/COS/TAN allow as a parameter an angle between and

4096

– 4096

but their precision decreases progressively for the angles outside the period

– 2 π and

+2 π because of the imprecision brought by the modulo carried out on the parameter before any operation.

2 π

For the values 0<Op2<0.01 and 0.999<Op2<1.0 of ASIN, bit %S18 and bit

%SW17:X5 change to 1, denoting an imprecise measurement.

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Conversion instructions

General These instructions are used to carry out conversion operations.

DEG_TO_RAD

RAD_TO_DEG conversion of degrees into radian, the result is the value of the angle between 0 and 2 π cosine of an angle expressed in radian, the result is the value of the angle between 0 and 360 degrees

Structure Ladder language

%M0

%MF0:=DEG_TO_RAD(%MF10)

%M2

%MF2:=RAD_TO_DEG(%MF20)

Instruction list language

LD %M0

[%MF0:=DEG_TO_RAD(%MF10)]

LD %M2

[%MF2:=RAD_TO_DEG(%MF20)]

Structured text language

IF %M0 THEN

%MF0:=DEG_TO_RAD(%MF10) ;

END_IF;

IF %M2 THEN

%MF2:=RAD_TO_DEG(%MF20) ;

END_IF;

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Syntax

Rules of use

Operators and syntax of conversion instructions:

Operators

DEG_TO_RAD

RAD_TO_DEG

Syntax

Op1:=Operator(Op2)

Operands of conversion instructions:

Type

Words which can be indexed

Words which can not be indexed

Operand 1 (Op1) Operand 2 (Op2)

%MF %MF, %KF

Imm. floating point value

Numeric floating point

Expr.

Advanced instructions

The angle to be converted must be between -737280.0 et +737280.0 (for

DEG_TO_RAD conversions) or between – 4096 π conversions).

and 4096 π (for RAD_TO_DEG

For values outside these ranges, the displayed result will be + 1.#NAN, the %S18 and %SW17:X0 bits being set at 1.

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Rounding off a floating point value in ASCII format

General

Structure

The ROUND function supplies the approximate value of a floating point number represented by a string of characters.

This function uses 3 parameters:

ROUND(string 1, Long, String 2) l l l

String 1: Table of bytes constituting the string of source characters

Long: Word giving the position in the string of characters from which the rounding off will be made (the position is calculated by counting the number of characters from the decimal point, including the decimal point)

String 2: Byte tables constituting the resulting character string

Ladder language

ROUND(%MB10:15,%MW100,%MB50:15)

Instruction list language

LD TRUE

[ROUND(%MB10:15,%MW100,%MB50:15)]

Structured text language

ROUND(%MB10:15,%MW100,%MB50:15) ;

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Examples

Advanced instructions

Examples of ASCII floating point values roundoffs

%MB10:15

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

“-” “1” “.” “2” “3” “4” “5” “6” “7” “0” “e” “+” “2” “6” $00

%MW100 = 4

%MB50:15

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

“-” “1” “.” “2” “3” “4” “5” “0” “0” “0” “e” “+” “2” “6” $00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

“-” “1” “.” “1” “3” “5” “4” “9” “4” “2” “e” “-” “3” “0” $00

%MB10:15

%MW100 = 2

%MB50:15

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

“+” “1” “.” “1” “0” “0” “0” “0” “0” “0” “e” “-” “3” “0” $00

Syntax

Rules of use

Operators and syntax of conversion instructions:

Operators

ROUND

Syntax

Op(string 1,Long, string 2)

Operands of conversion instructions:

Type

Byte table

Words which can not be indexed

Operand 1 (Op1) Operand 2 (Op2)

%MB:15 -

%MW l l l

The length of the source and result character strings must be between 15 and 255 bytes. If this is not the case, the %S15 bit is set at 1.

The Long length parameters must be between 0 and 8. If this is not the case, the

%S20 bit (index overflow) is set at 1. Special case: for L=0 or L=8, the roundoff is not made (source string = result string).

When the last character different from 0 is > to 5, the previous character is incremented.

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2.5 Numerical conversion instructions

Introduction

Aim of this subsection

What's in this

Section?

This sub-section describes PL7 language floating point instructions.

This Section contains the following Maps:

Topic

BCD conversion instructions <-> Binary

Integer Conversion Instructions <-> Floating

Instructions for Gray <-> Integer conversion

Word conversion Instructions <--> double word

Page

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Advanced instructions

BCD conversion instructions <-> Binary

General There are six conversion instructions.

Instruction list:

BCD_TO_INT

INT_TO_BCD conversion of a 16 bit BCD number into a 16 bit integer conversion of a 16 bit integer into a 16 bit BCD number

DBCD_TO_DINT conversion of a 32 bit BCD number into a 32 bit integer

DINT_TO_DBCD conversion of a 32 bit integer into a 32 bit BCD number

DBCD_TO_INT

INT_TO_DBCD conversion of a 32 bit BCD number into a 16 bit integer conversion of a 16 bit integer into a 32 bit BCD number

Reminder concerning BCD code

The BCD code (Binary Coded Decimal) is used to represent a decimal number from

0 to 9 by a set of 4 bits. A bit object of 16 bits can thus contain a number expressed in 4 digits (0 < N < 9999).

Equivalence between decimal and BCD:

Decimal 0

BCD

1 2 3 4 5 6 7 8 9

0000 0001 0010 0011 0100 0101 0110 0111 1000 1001

Examples of BCD coding: l Word %MW5 expressing the BCD value "2450" which corresponds to the binary value: 0010 0100 0101 0000 l Word %MW12 expressing the BCD value "2450" which corresponds to the binary value : 0000 1001 1001 0010

The instruction BCD_TO_INT changes the word %MW5 to the word %MW12.

The instruction INT_TO_BCD changes the word %MW12 to the word %MW5.

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Structure Ladder language

%MW0:=BCD_TO_INT(%MW10)

%I1.2

%MW10:=INT_TO_BCD(%KW9)

Syntax

Instruction list language

LD TRUE

[%MW0:=BCD_TO_INT(%MW10)]

LD I1.2

[%MW10:=INT_TO_BCD(%KW9)]

Structured text language

%MW0:=BCD_TO_INT(%MW10) ;

IF %I1.2 THEN

%MW10:=INT_TO_BCD(%KW9) ;

END_IF;

Operators and syntax (conversion of a 16 bit number):

Operators

BCD_TO_INT

INT_TO_BCD

INT_TO_DBCD

Syntax

Op1=operator(Op2)

Operands (conversion of a 16 bit number):

Type

Words which can be indexed

Operand 1 (Op1)

%MW

Words which can not be indexed

%QW,%SW,%NW,

%BLK

%MD Double words which can be indexed

Double words which can not be indexed

%QD,%SD

Operand 2 (Op2)

%MW,%KW,%Xi.T

Imm.val.,%IW,%SW%NW,%BLK,

Numeric Expr.

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Operators and syntax (conversion of a 32 bit number):

Operators

DBCD_TO_DINT

DINT_TO_DBCD

DBCD_TO_INT

Syntax

Op1=operator(Op2)

Operands (conversion of a 32 bit number):

Type

Words which can be indexed

Operand 1 (Op1)

%MW

Words which can not be indexed

%QW,%SW,%NW,

%BLK

%MD Double words which can be indexed

Double words which can not be indexed

%QD,%SD

Operand 2 (Op2)

%MW,%KW,%Xi.T

%MD,%KD

Imm. val.,%ID,%QD%SD, Numeric Expr.

133

Advanced instructions

Example of applications

Rules of use

The BCD_TO_INT instruction is used to process a setpoint value present in PLC input on BCD encoded encoder wheels.

The INT_TO_BCD instruction is used to display digital values (eg: calculation result, current value of function block) on BCD coded displays.

l l

BCD->Binary conversion

The BCD-->Binary conversion instructions ensure that the conversion operator is working on a BCD coded value. If the value is not a BCD value, the %S18 system bit is set at 1 and the result returns the value of the first nibble which is at fault.

E.g.: BCD_TO_INT(%MW2) with %MW2=4660 gives 1234 as the result. However,

%MW2=242 (16#00F2) causes %S18 to set at 1 and the result is 15.

For the DBCD_TO_INT instruction, if the BCD number is greater than 32767, the system bit %S18 is set at 1 and the value -1 is stored in the result.

Binary->BCD conversion

When the last character different from 0 is > at 5, the previous character is incremented.

The instruction INT_TO_BCD (or DINT_TO_BCD) ensures that the conversion operator is working on a value between 0 and 9999 (or 0 and 9999 9999). If this is not the case, the system bit %S18 is set at 1 and the result returns the input parameter value.

E.g.: INT_TO_BCD (%MW2) with %MW2=2478 gives 9336 as the result.

However, %MW2=10004 causes %S18 to set at 1 and the result is 10004.

For the INT_TO_DBCD instruction, if the input parameter is negative, the system bit %S18 is set at 1 and the result returns the input parameter value.

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Integer Conversion Instructions <-> Floating

General Four conversion instructions are offered.

Integer conversion instructions list<-> floating:

INT_TO_REAL

DINT_TO_REAL

REAL_TO_INT

REAL_TO_DINT conversion of an integer word --> floating double conversion of integer word --> floating floating conversion --> integer word (the result is the nearest algebraic value) floating conversion --> double integer word (the result is the nearest algebraic value)

Structure Ladder language

%MF0:=INT_TO_REAL(%MW10)

%I1.8

%MD4:=REAL_TO_DINT(%MF9)

Instruction list language

LD TRUE

[%MF0:=INT_TO_REAL(%MW10)]

LD I1.8

[%MD4:=REAL_TO_DINT(%MF9)]

Structured text language

%MF0:=INT_TO_REAL(%MW10) ;

IF %I1.8 THEN

%MD4:=REAL_TO_DINT(%MF9) ;

END_IF;

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Syntax Operators and syntax (conversion of an integer word --> floating):

Operators

INT_TO_REAL

Syntax

Op1=INT_TO_REAL(Op2)

Operands (conversion of an integer word --> floating):

Type

Indexable words

Non-indexable words -

Operand 1 (Op1) Operand 2 (Op2)

%MW,%KW,%Xi.T

Indexable floating words

%MF

Imm. val.,%IW,%QW,%SW%NW,%BLK,Num expr.

Example: integer word conversion --> floating: 147 --> 1.47e+02

Operators and syntax (double conversion of integer word --> floating):

Operators

DINT_TO_REAL

Syntax

Op1=DINT_TO_REAL(Op2)

Operands (double conversion of integer word --> floating):

Type

Indexable words

Operand 1 (Op1) Operand 2 (Op2)

%MD,%KD

Non-indexable words -

Indexable floating words

%MF

Imm. val.,%ID,%QD%SD,Num expr.

Example: integer double word conversion --> floating: 68905000 --> 6.8905e+07

Operators and syntax (floating conversion --> integer word or integer double word):

Operators

REAL_TO_INT

REAL_TO_DINT

Syntax

Op1=Operator(Op2)

Operators (floating conversion --> integer word or integer double word):

Type

Indexable words

Operand 1 (Op1)

%MW

Operand 2 (Op2)

Non-indexable words %QW,%NW,%BLK -

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Precision of

Rounding

Advanced instructions

Type

Indexable double words

Non-indexable double words

Indexable floating words

Non-indexable floating words

Operand 1 (Op1) Operand 2 (Op2)

%MD -

%QD

%MF,%KF

Floating imm.val.

Example: floating conversion --> integer word: 5978.6 --> 5979 floating conversion --> integer double word: -1235978.6 --> -1235979

Note: If during a real to integer (or real to integer double word) conversion the floating value is outside the limits of the word (or double word),bit %S18 is set to 1.

Standard IEEE 754 defines 4 rounding modes for floating operations.

The mode employed by the instructions above is the "rounded to the nearest" mode:

"if the nearest representable values are at an equal distance from the theoretical result, the value given will be the value whose low significance bit is equal to 0".

In certain cases, the result of the rounding can thus take a default value or an excess value.

For example:

Rounding of the value 10.5 -> 10

Rounding of the value 11.5 -> 12

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Instructions for Gray <-> Integer conversion

General The GRAY_TO_INT instruction converts a Gray code word into integer (pure binary code).

Reminder concerning Gray code

The Gray code or "considered binary" is used to code a changing digital value in a series of binary configurations which differ from each other by the change in status of one and only one bit.

For example, this code is used to avoid the following hazard: in pure binary, the change of a value from 0111 to 1000 can create random values between 0 and

1000, the bits do not change value in a perfectly simultaneous way.

Equivalence between decimal, BCD and Gray:

Décimal 0

BCD

1 2 3 4 5 6 7 8 9

0000 0001 0010 0011 0100 0101 0110 0111 1000 1001

Gray 0000 0001 0011 0010 0110 0111 0101 0100 1100 1101

Structure Ladder language

%MW0:=GRAY_TO_INT(%MW10)

Instruction list language

LD TRUE

[%MW0:=GRAY_TO_INT(%MW10)]

Structured text language

%MW0:=GRAY_TO_INT(%MW10) ;

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Syntax

Advanced instructions

Operators and syntax:

Operators

GRAY_TO_INT

Syntax

Op1=GRAY_TO_INT(Op2)

Operands:

Type

Words which can be indexed

Operand 1 (Op1)

%MW

Words which can not be indexed

%QW,%SW,%NW,

%BLK

Operand 2 (Op2)

%MW,%KW,%Xi.T

Imm.val.,%IW,%QW,%SW,%NW,%BLK,

Numeric Expr.

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Word conversion Instructions <--> double word

General The instructions described below are useful for purely symbolic objects (such as

DFB function blocks).

For objects which can be addressed, the overlap mechanisms (example: %MD0 double word is made from the words %MW0 and %MW1) make these instructions unnecessary.

Instruction list for word conversion <--> double word:

CONCATW

Extract instructions from the least significant word from a double word

Extract instructions from the most significant word from a double word

2 word concatenation instructions

Syntax

140

Extract instruction operators and syntax from the least significant word from a double word:

Operators

Syntax

Op1=LW(Op2)

Extract instructions operands from the least significant word from a double word

Op1

Op2

Single length word (type Word)

Double length word (type DWord)

Example:

Pressure_cuve:=LW(Parameter_1) if Parameter_1=16#FFFF1234 , Pressure_cuve=16#1234

Extract instruction operators and syntax from the most significant word from a double word:

Operators

Syntax

Op1=HW(Op2)

Extract instructions operands from the most significant word from a double word

Op1

Op2

Single length word (type Word)

Double length word (type DWord)

Example:

Pressure_cuve:=HW(Parameter_1) if Parameter_1=16#FFFF1234 , Pressure_cuve=16#FFFF

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Operators and syntax of the 2 single word concatenation instructions and transfer into a double word:

Operators

CONCATW

Syntax

Op1=CONCATW(Op2,

Op3)

Operands of the 2 single word concatenation instructions and transfer into a double word:

Op1

Op2

Op3

Double length word (type DWord)

Single length word (type Word)

Example:

Pressure_cuve:=CONCATW(Parameter_1,Parameter_2) if Parameter_1=16#1234 , Parameter_1=16#FFFF ,

Pressure_cuve=16#FFFF1234

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2.6 Word table instructions

Introduction

Aim of this subsection

What's in this

Section?

This sub-section describes PL7 language word table instructions

This Section contains the following Maps:

Topic

Word table instructions

Arithmetic instructions on tables

Logic table instructions

Table summing functions

Table comparison functions

Table search functions

Table search functions for maxi and mini values

Number of occurrences of a value in a table

Table rotate shift function

Table sort function

Table length calculation function

Page

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Word table instructions

General Operations on tables can be carried out with PL7 software: l l l common words double words floating words

Word tables are collections of adjacent words of the same type and defined length: L

Example of a word table: %KW10:5

%KW10 16 bits

%KW14

Word table characteristics

Type Format

Internal words

Constant words

Simple length

Double length

Floating point

Single length

Double length

Floating point

Single length

Maximum address

%MWi:L

%MWDi:L

%MFi:L

%KWi:L

%KWDi:L

%KFi:L

%SW50:4 (2)

Size Write access i+L<=Nmax (1) Yes i+L<=Nmax-1 (1) Yes i+L<=Nmax-1 (1) Yes i+L<=Nmax (1) No i+L<=Nmax-1 (1) No i+L<=Nmax-1 (1) No

Yes System word

(1) Nmax = maximum number of words defined in software configuration

(2) Only the words %SW50 to %SW53 may be addressed in the form of tables.

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General rules on table operations l l l l l l l l table operations can only be carried out on tables containing objects of the same type table operations can only be carried out on a maximum of 2 tables if the tables in an operation are of different sizes, the result table will correspond to the smaller of the 2 operand tables the user must avoid carrying out operations on tables with overlap (for example:

%MW100[20]:=%MW90[20]+%KW100[20] ) an operation on 2 tables is carried out on each element of the same rank in both tables and the result is transferred into the element of the same rank in the result table if during an operation between 2 elements, the system bit %S18 is set at 1, the result for this operation is invalid, but the operation for the following elements is carried out correctly when one of the operands is a numeric expression, this must be put between brackets the rank of a word in a table corresponds to the position of the word in the table; the first position corresponds to rank 0

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Arithmetic instructions on tables

General These instructions are used to perform an arithmetic operation between two word table operands (or a word and a word table).

Instruction list

+ : addition

: subtraction

REM : remainder of the division:

* : multiplication

/ : division

Structure Language data

%M0

%MW0:10:=%MW20:10+100

%I3.2

%MW50:5:=%KD0:5+%MD0:5

%I3.3

P %MW0:10:=%KW0:10*%MW20

Instruction list language

LD %M0

[%MW0:10:=%MW20:10+100]

LD %I3.2

[%MD50:5:=%KD0:5+%MD0:5]

Structured text language

IF RE %I3.3 THEN

%MW0:10:=%KW0:10*%MW20 ;

END_IF;

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Syntax Operators and syntax of arithmetic table instructions:

Operators

+, -, *, /, REM

Syntax

Op1:=Op2 Operator Op3

Operands of arithmetic word table instructions:

Type

Word tables which can be indexed

Words which can be indexed

Words which can not be indexed

Operand 1 (Op1)

%MW:L

Operand 2 and 3 (Op2 and 3)

%MW:L,%KW:L,%Xi.T:L

%MW,%KW,%Xi.T

Imm.val.,%IW,%QW,%SW,%NW,

%BLK,Num. expr.

Operands of arithmetic double word table instructions:

Type

Word tables which can be indexed

Double words which can be indexed

Double words which can not be indexed

Operand 1 (Op1)

%MD:L

Operand 2 and 3 (Op2 and 3)

%MD:L,%KD:L

%MD,%KD

Imm. val., %ID,%QD, Numeric expr.

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Logic table instructions

General These instructions are used to perform an arithmetic operation between two word table operands (or a word and a word table).

Instruction list

AND : AND (bit by bit)

OR : logic OR (bit by bit)

XOR : exclusive OR (bit by bit)

NOT : logic complement (bit by bit) of a table (1 single operand)

Structure Ladder language

%M0

%MW0:5:=%KW0:5AND16#FF00

%I3.2

%MD0:10:=%KD5:10OR%MD50:10

%I3.3

%MW100:50:=NOT%MW0:50

Instruction list language

LD %M0

[%MW0:5:=%KW0:5 AND 16#FF00]

Structured text language

IF %I3.2 THEN

%MD0:10:=%KD5:10 OR %MD50:10 ;

END_IF;

IF RE %I3.3 THEN

%MW100:50:= NOT %MW0:50 ;

END_IF;

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Syntax Operators and syntax of arithmetic table instructions:

Operators

AND,OR,XOR

NOT

Syntax

Op1:=Op2 Operator Op3

Op1:=NOT Op2

Operands of logic word table instructions:

Type

Word tables which can be indexed

Words which can be indexed

Words which can not be indexed

Operand 1 (Op1)

%MW:L

Operand 2 and 3 (Op2 and Op3)

%MW:L,%KW:L,%Xi.T:L

%MW,%KW,%Xi.T

Imm.val.,%IW,%QW,%SW,%NW,%BLK,

Numeric Expr.

Operands of logic double word table instructions:

Type

Word tables which can be indexed

Double words which can be indexed

Double words which can not be indexed

Operand 1 (Op1)

%MD:L

Operand 2 and 3 (Op2 and 3)

%MD:L,%KD:L

%MD,%KD,%SD

Imm. val., %ID,%QD, Numeric expr.

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Table summing functions

General

Structure

Functions SUM and SUM_ARR add all the elements of a word table: l if the table is made up of simple format words, the result is given in the form of a single format word (SUM function) l l if the table is made up of double words, the result is given in the form of a double word (SUM function) if the table is made up of floating words, the result is given in the form of a floating word (SUM_ARR function)

Ladder language

%I3.2

%MW5:=SUM(%MW32:12)

%MD50:=SUM(%KD50:20)

%MF0:=SUM_ARR(%KF8:5)

Instruction list language

LD %I3.2

[%MW5:=SUM(%MW32:12]

Structured text language

%MD50:=SUM(%KD50:20)

%MF0:=SUM_ARR(%KF8:5)

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Syntax Syntax of table summing instructions:

Res:=SUM(Tab)

Res:=SUM_ARR(Tab)

Parameters of table summing instructions:

Type

Word tables which can be indexed

Words which can be indexed

Words which can not be indexed

Double word tables which can be indexed

Result (res)

%MW

%QW,%SW,%NW

Double words which can be indexed %MD

Double words which can not be indexed %QD,%SD

Floating word tables which can be indexed

Floating words which can be indexed %MF

Table (Tab)

%MW:L,%KW:L,%Xi.T:L

%MD:L,%KD:L

%MF:L,%KF:L

Example

Note: When the result is not within the valid word or double word format range according to the table operand, the system bit %S18 is set to 1.

%MW5:=SUM(%MW30:4) with %MW30=10, %MW31=20, %MW32=30, %MW33=40

%MW5=10+20+30+40=100

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Table comparison functions

General

Structure

The EQUAL (on integer) and EQUAL-ARR (on floating point) functions carry out a comparison of two tables, element by element.

If a difference is shown, the rank of the first dissimilar elements is returned in the form of a word, otherwise the returned value is equal to -1.

The third parameter supplies the rank from which the comparison begins (example:

0 to start at the beginning). This third parameter is optional (it is not authorized with the EQUAL_ARR function); when it is omitted, the comparison is carried out on the whole table.

Ladder language

%I3.2

%MW5:=EQUAL(%MW20:7,%KW0:7,3)

%MW0:=EQUAL(%MW20:7,%KD0:7)

%MF1:=EQUAL_ARR(%MF0:5,%KF0:5)

Instruction list language

LD %I3.2

[%MW5:=EQUAL(%MD20:7,KD0:7,3)]

Structured text language

%MW0:=EQUAL(%MD20:7,%KD0:7)

%MW1:=EQUAL_ARR(%MF0:5,%KF0:5)

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Syntax Syntax of table comparison instructions:

Res:=EQUAL(Tab1,Tab2,rang)

Res:=EQUAL_ARR(Tab1,Tab2)

Parameters of table comparison instructions:

Type

Word tables

Result (Res)

Table (Tab)

%MW:L,%KW:L,%

Xi.T:L

Words which can be indexed

Words which can not be indexed

%MW

%QW,%SW,%NW -

%MD:L,%KD:L

Rank

%MW,%KW,%Xi.T

Imm.val.,%QW,%IW,%

SW,%NW, Numeric

Expr.

%MD,%KD

Double word tables

Double words which can be indexed

Double words which can not be indexed

%MD

%QD,%SD

Floating word tables -

Floating words %MF

%MF:L,%KF:L

Imm.val.,%QD,%ID,

%SD, Num. expr.

Example l l

Note: it is mandatory that the tables are of the same length if the parameter rank is greater than the size of the tables, the result is equal to this rank.

%MW5:=EQUAL(%MW30:4,%KW0:4,1)

Comparison of 2 tables:

Rank

Word tables

%MW30=10

%MW31=20

%MW32=30

%MW33=40

Constant word tables

%KW0=20

%KW1=20

%KW2=30

%KW3=60

The value of the word %MW5 is 3 (different first rank)

Difference

Ignored (rank<1)

Different

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Advanced instructions

Table search functions

General

Structure

There are 11 search functions: l l l l l

FIND_EQW : searches for the position in a word table of the first element which is equal to a given value

FIND_GTW : searches for the position in a word table of the first element which is greater than a given value

FIND_LTW : searches for the position in a word table of the first element which is less than a given value

FIND_EQD : searches for the position in a double word table of the first element which is equal to a given value

FIND_GTD : searches for the position in a double word table of the first element which is greater than a given value l l l

FIND_LTD : searches for the position in a double word table of the first element which is less than a given value.

FIND_EQR : searches for the position in a floating word table of the first element which is equal to a given value

FIND_GTR : searches for the position in a floating word table of the first element which is greater than a given value l FIND_LTR : searches for the position in a floating word table of the first element which is less than a given value

FIND_EQWP : searches for the position in a word table of the first element which l l is equal to a value given from a rank

FIND_EQDP : searches for the position in a double word table of the first element which is equal to a value given from a rank

The result of these instructions is equal to the rank of the first element which is found or at -1 if the search is unsuccessful.

Ladder language

%I3.2

%MW5:=FIND_EQW(%MW20:7,%KW0)

%I1.2

%MW0:=FIND_GTD(%MD20:7,%KD0)

%MW1:=FIND_LTR(%MF40:5,%KF5)

Instruction list language

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Syntax

LD %I3.2

[%MW5:=FIND_EQW(%MW20:7,Kw0)]

Structured text language

IF %I1.2 THEN

%MW0:=FIND_GTD(%MD20:7,%KD0) ;

END_IF;

%MW1:=FIND_LTR(%MF40:5,%KF5) ;

%MW9:=FIND_EQWP(%MW30:8,%KF5,%MW4) ;

Syntax of table search instructions:

Function

FIND_EQW

FIND_GTW

FIND_LTW

FIND_EQD

FIND_GTD

FIND_LTD

FIND_EQR

FIND_GTR

FIND_LTR

FIND_EQWP

FIND_EQDP

Syntax

Res:=Function(Tab,Val)

Res:=Function(Tab,Val,rank)

Parameters of word table search instructions

(FIND_EQW,FIND_GTW,FIND_LTW,FIND_EQWP )

Type

Word tables which can be indexed

Words which can be indexed

Result (Res)

%MW

Words which can not be indexed

%QW,%SW,%NW

Table (Tab)

%MW:L,%KW:L,%

Xi.T:L

Value (val), rank

%MW,%KW,%Xi.T

Imm.val.,%QW,%IW,%

SW,%NW, Numeric

Expr.

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Example

Advanced instructions

Parameters of double word table search instructions

(FIND_EQD,FIND_GTD,FIND_LTD,FIND_EQDP)

Type

Word tables which can be indexed

Double words which can be indexed

Double words which can not be indexed

Result (Res)

%MW

%QW,%SW,%NW

Table (Tab)

%MD:L,%KD:L,%Xi

.T:L

Value (val)

%MD,%KD

Imm.val.,%QD,%ID,

%SD, Num. expr.

Note: For the rank, see the word table (idem FIND_EQWP)

Parameters of floating word table search instructions

(FIND_EQR,FIND_GTR,FIND_LTR)

Type Result (Res)

Floating word tables -

Floating words which can be indexed

%MW

Floating words which can not be indexed

%QW,%SW,%NW

Table (Tab)

%MF:L,%KF:L

Value (val)

%MF,%KF

Imm.val., Num. Expr.

%MW5:=FIND_EQW(%MW30:4,%KW0)

Search for the position of the first word =%KW0=30 in the table:

Rank

Word Table

%MW30=10

%MW31=20

%MW32=30

%MW33=40

Result

%MW5=2 Value (val), rank

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Table search functions for maxi and mini values

General

Structure

There are 6 search functions: l l l l l l

MAX_ARW : search for the maximum value in a word table

MIN_ARW : search for the minimum value in a word table

MAX_ARD : search for the maximum value in a double word table

MIN_ARD : search for the minimum value in a double word table

MAX_ARR : search for the maximum value in a floating word table

MIN_ARR : search for the minimum value in a floating word table

The result of these instructions is equal to the maximum value (or minimum) found in the table.

Ladder language

%I3.2

%MW5:=MAX_ARW(%MW20:7)

%I1.2

%MD0:=MIN_ARD(%MD20:7)

%MF8:=MIN_ARR(%MF40:5)

Instruction list language

LD %I3.2

[%MW5:=MAX_ARW(%MW20:7)]

Structured text language

IF %I1.2 THEN

%MD0:=MIN_ARD(%MD20:7) ;

END_IF;

%MF8:=MIN_ARR(%MF40:5) ;

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Syntax

Advanced instructions

Syntax of table search instructions for max and min values:

Function

MAX_ARW

MIN_ARW

MAX_ARD

MIN_ARD

MAX_ARR

MIN_ARR

Syntax

Res:=Function(Tab)

Parameters of table search instructions for max and min values:

Type

Word tables which can be indexed

Result (Res)

Words which can be indexed

%MW

Words which can not be indexed

%QW,%SW,%NW

Double word tables which can be indexed

Double words which can be indexed

%MD

Double words which can not be indexed

%QD,%SD

Floating word tables

Floating words which can be indexed

%MF

Table (Tab)

%MW:L,%KW:L,%Xi.T:L

%MD:L,%KD:L

%MF:L,%KF:L

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Number of occurrences of a value in a table

General

Structure

There are 3 search functions: l l l

OCCUR_ARW : searches in a word table for the number of elements which are equal to a given value

OCCUR_ARD : searches in a double word table for the number of elements which are equal to a given value

OCCUR_ARR : searches in a floating word table for the number of elements which are equal to a given value

Ladder language

%I3.2

%MW5:=OCCUR_ARW(%MW20:7,%KW0)

%I1.2

%MW0:=OCCUR_ARD(%MD20:7,200)

Instruction list language

LD %I3.2

[%MW5:=OCCUR_ARW(%MW20:7,%KW0)]

Structured text language

IF %I1.2 THEN

%MW0:=OCCUR_ARD(%MD20:7,200) ;

END_IF;

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Syntax

Advanced instructions

Syntax of table search instructions for max and min values:

Function

OCCUR_ARW

OCCUR_ARD

OCCUR_ARR

Syntax

Res:=Function(Tab,Val)

Parameters of table search instructions for max and min values:

Type

Word tables which can be indexed

Words which can be indexed

Words which can not be indexed

Result (Res)

%MW

%QW,%SW,%NW

Table (Tab)

%MW:L,%KW:L,%Xi

.T:L

Value (Val)

%MW,%KW,%Xi.T

%MD:L,%KD:L

Imm.val.,%QW,%IW,

%SW,%NW, Numeric

Expr.

Double word tables which can be indexed

Double words which can be indexed

Double words which can not be indexed

%MW

%QW,%SW,%NW

Floating word tables -

Floating words which can be indexed

%MF

Floating words which can not be indexed

%QW,%SW,%NW

%MF:L,%KF:L

%MD,%KD

Imm.val.,

%QD,%ID,%SD,Num.

Expr.

%MF,%KF

Imm. val., Num. Expr.

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Table rotate shift function

General There are 6 shift functions: l l l

ROL_ARW : performs a rotate shift of n positions from top to bottom of the elements in a word table

ROL_ARD : performs a rotate shift of n positions from top to bottom of the elements in a double word table

ROL_ARR : performs a rotate shift of n positions from top to bottom of the elements in a floating word table

Illustration of the ROL_ functions

5 l l l

ROL_ARW : performs a rotate shift of n positions from bottom to top of the elements in a word table

ROR_ARD : performs a rotate shift of n positions from bottom to top of the elements in a double word table

ROR_ARR : performs a rotate shift of n positions from bottom to top of the elements in a floating word table

Illustration of the ROR_ functions

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Structure

Syntax

Advanced instructions

Ladder language

%I3.2

P ROL_ARW(%KW0,%MW20:7)

%I1.2

P ROR_ARD(2,%MD20:7)

%I1.3

P ROR_ARR(2,%MF40:5)

Instruction list language

LDR %I3.2

[ROL_ARW(%KW0,%MW0)]

Structured text language

IF RE %I1.2 THEN

ROR_ARD(2,%MD20:7) ;

END_IF;

IF RE %I1.3 THEN

ROR_ARR(2,%MF40:5) ;

END_IF;

Syntax of rotate shift instructions in word tables ROL_ARW and ROR_ARW

Function

ROL_ARW

ROR_ARW

Syntax

Function(n,Tab)

Parameters of rotate shift instructions in word tables ROL_ARW and ROR_ARW :

Type

Word tables which can be indexed

Words which can be indexed

Words which can not be indexed

Number of positions (n)

%MW,%KW,%Xi.T

Imm.val.,%QW,%IW,%SW,

%NW, Num.expr.

Table (Tab)

%MW:L

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Advanced instructions

Syntax of rotate shift instructions in double word tables ROL_ARD and ROR_ARD

Function

ROL_ARD

ROR_ARD

Syntax

Function(n,Tab)

Parameters of rotate shift instructions in double word tables ROL_ARD and

ROR_ARD :

Type

Word tables which can be indexed

Words which can be indexed

Words which can not be indexed

Number of positions (n)

%MW,%KW,%Xi.T

Imm.val.,%QW,%IW,%SW,

%NW, Num.expr.

Table (Tab)

%MD:L

Syntax of rotate shift instructions in floating word tables ROL_ARR and ROR_ARR

Function

ROL_ARR

ROR_ARR

Syntax

Function(n,Tab)

Parameters of rotate shift instructions for floating word tables: ROL_ARR and

ROR_ARR :

Type

Word tables which can be indexed

Words which can be indexed

Words which can not be indexed

Number of positions (n)

%MW,%KW,%Xi.T

Imm.val.,%QW,%IW,%SW,

%NW, Num.expr.

Table (Tab)

%MF:L

Note: if the value of n is negative or null, no shift is performed.

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Advanced instructions

Table sort function

General

Structure

There are 3 sort functions: l l l

SORT_ARW : performs sorts in ascending or descending order of the elements of the word table and stores the result in the same table.

SORT_ARD : performs sorts in ascending or descending order of the elements of the double word table and stores the result in the same table.

SORT_ARR : performs sorts in ascending or descending order of the elements of the floating word table and stores the result in the same table

Ladder language

%I3.2

SORT_ARW(%MW0,%MW0:6)

%I1.2

SORT_ARD(-1,%MD20:6)

%I1.3

SORT_ARD(0,%MD40:8)

Instruction list language

LD %I3.2

[SORT_ARW(%MW20,%MW0:6)]

Structured text language

IF %I1.2 THEN

SORT_ARD(-1,%MD20:6) ;

END_IF;

IF %I1.3 THEN

SORT_ARR(0,%MF40:8) ;

END_IF;

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Syntax Syntax of table sort functions:

Function

SORT_ARW

SORT_ARD

SORT_ARR

Syntax

Function(direction,Tab) l the "direction" parameter gives the order of the sort: direction > 0 the sort is done in ascending order; direction < 0, the sort is done in descending order l the result (sorted table) is returned in the Tab parameter (table to sort).

Parameters of table sort functions:

Type

Word tables (SORT_ARW)

Double word tables

(SORT_ARD)

Sort direction

Floating word tables

(SORT_ARR)

Words which can be indexed %MW,%KW

Words which can not be indexed

Imm.val.,%QW,%IW,%SW,

%NW, Num.expr.

Table (Tab)

%MW:L

%MD:L

%MF:L

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Advanced instructions

Table length calculation function

General

Structure

There are 4 table length calculation functions. These functions are especially useful for programming the DFB function blocks when the table lengths have not been explicitly defined: l LENGTH_ARW : calculation of the length of a word table by the number of l elements

LENGTH_ARD : calculation of the length of a double word table by the number of elements l l

LENGTH_ARR of elements

: calculation of the length of a floating word table by the number

LENGTH_ARX : calculation of the length of a bit table by the number of elements

Ladder language

%I3.2

LEN_ARW(tab_mot)

%I1.2

LENGTH_ARD(tab_dmot)

%I1.3

LENGTH_ARX(tab_bit)

Instruction list language

LD %I3.2

[LENGTH_ARW(tab_mot)]

Structured text language

IF %I1.2 THEN

LENGTH_ARD(tab_dmot) ;

END_IF;

IF %I1.3 THEN

LENGTH_ARX(tab_bit) ;

END_IF;

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Syntax Syntax of table length calculation functions:

Function

LENGTH_ARW

LENGTH_ARD

LENGTH_ARR

LENGTH_ARX

Syntax

Result=Fonction(Tab)

Parameters of table length calculation functions:

Type

Tables (LENGTH_ARW)

Tables (LENGTH_ARD)

Tables (LENGTH_ARR)

Tables (LENGTH_ARX) bit

Words which can be indexed -

Words which can not be indexed

Table (Tab) word double word floating word

Result (Res)

%MW

%QW,%SW,NW

Note: the table parameters will be purely symbolic objects.

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Advanced instructions

2.7 Character string instructions

Introduction

Aim of this subsection

What's in this

Section?

This section describes PL7 language character string instructions

This Section contains the following Maps:

Topic

Format of a string of characters or table of characters

Assignment on string of characters

Alphanumeric comparisons

Numeric conversion functions <---> ASCII binary-->ASCII conversion

ASCII-->binary conversion

Floating point-->ASCII conversion

ASCII-->Floating point conversion

Concatenation of two strings

Deletion of a substring of characters

Inserting a substring of characters

Replacing a substring of characters

Extracting a substring of characters

Extracting characters

Comparing two character strings

Searching for a character substring

Length of a character string

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Advanced instructions

Format of a string of characters or table of characters

General l l

A table of characters is made up of a collection of bytes in which a string of characters can be stored. The size of the table specifies the maximum permissible length of the string of characters (maximum 255).

Example: %MB4:6 represents a table of 6 bytes containing a string of maximum 6 characters.

The first byte at the beginning of a table must be even (it is not possible to enter a table of bytes beginning with an odd byte, e.g.: %MB5:6).

l l l l

Tables of bytes use the same memory zone as the words %MW, %MD; there is therefore a risk of overlap (("Overlay Rules" - Reference Manual Volume 1)).

The term string of characters represents all the characters included between the beginning of the table and the first string end found.

The character NUL (code hexa 00) is called String End. It is symbolized by Ø in the rest of the chapter.

The length of a string of characters is therefore given either by the number of characters before the string end, or by the size of the table if no string end is detected.

Examples:

The following table (of 12 elements) contains the “ABCDE” character string

(length: 5):

“A” “B” “C” “D” “E” Ø “J” “K” “L” “M”“N” “O”

The following table (of 10 elements) contains the “ABCDEJKLMN” character string (length: 10):

“A” “B” “C” “D” “E” “J” “K” “L” “M”“N”

Note: The system bit %S15 is set in the following cases: l When writing a string in a table, if this string is longer than the size of the table

(impossible to write the string end Ø) l When an attempt is made to access a character which is not in the string in l question

Incoherence of parameters: Length to delete null (DELETE function), length to extract null (MID function), length to replace null (REPLACE function), search of a substring longer than the string (FIND function).

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Assignment on string of characters

General

Structure

Used to transfer a string of characters into a table of bytes of length L.

Ladder language

OPERATE

%MB30:12:=’mise_en_run

Example

Syntax

Instruction list language

LD TRUE

[%MB30:12:='set_to_run']

Structured text language

%MB30:12:='set_to_run' ;

Transfer of the string of characters 'set_to_run' into the byte table of length 12

%MB 30 31 32 33 34 35 36 37 38 39 40 41

‘m’ ‘i’ ‘s’ ‘e’ ‘_’ ‘e’ ‘n’ ‘_’ ‘r’ ‘u’ ‘n’ Ø

Assignment operators on string of characters

Op1:=Op2

Assignment operands on string of characters

Type

Byte table

Operand 1 (Op1)

%MB:L

Operand 2 (Op2)

%MB:L,KB:L, Immediate value

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Alphanumeric comparisons

General

Structure

These operators are used to compare two strings of characters contained in the byte tables in parameters. The comparison is made character by character.

The result is a bit with a value of 1 if the two strings satisfy the condition supplied by the operator, character by character; if this is not the case, the bit has a value of 0.

The order of the characters is given by the table of codes ASCII (ISO 646). For example, the string 'Z' is larger than the string 'AZ' which is larger than the string

'ABC'.

Ladder language

%M10

OPERATE

%MB20:12<%MB40:12

Note: The comparison blocks program themselves in the test zone.

Instruction list language

LD [%MB20:12<%MB40:12]

ST %M10

Note: The comparison is made inside the square brackets behind the LD, AND and

OR instructions.

Structured text language

%MB10<%MB40:12 ;

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Example

Syntax

Advanced instructions

Example: %MB20:12<%MB40:12 ==> YES The result has a value of 1 illustration

%MB 20 21 22 23 24 25 26 27 28 29 30 31

‘a’ ‘b’ ‘c’ ‘d’ ‘e’ ‘f’ ‘g’ ‘i’ Ø ‘k’ ‘w’ ‘z’

%MB 40 41 42 43 44 45 46 47 48 49 50 51

‘a’ ‘b’ ‘c’ ‘d’ ‘e’ ‘f’ ‘h’ ‘i’ Ø ‘k’ ‘w’ ‘z’

The elements after the string end are not taken into account.

Operators of alphanumeric comparisons

Operators

<, >, <=, >=, =, <>

Syntax

Op1 Operator Op2

Operands of alphanumeric comparisons

Type

Byte table

Operand 1 (Op1) and Operand 2 (Op2)

%MB:L, %KB:L, immediate value

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Numeric conversion functions <---> ASCII

General These functions are used to convert a numeric value (or floating point value) into a string of ASCII coded characters, or vice versa.

The result of the conversion must be transferred into a PL7 object via an assignment operation: byte table, single or double length word, floating point.

List of the possible numeric <---> ASCII conversion functions

Operators

INT_TO_STRING

DINT_TO_STRING

STRING_TO_INT

STRING_TO_DINT

REAL_TO_STRING

STRING_TO_REAL

Description

Binary-->ASCII (words) conversion

Binary-->ASCII (double words) conversion

ASCII-->Binary (single words) conversion

Binary-->ASCII (double words) conversion

Floating point-->ASCII conversion

ASCII-->Floating point conversion

Reminder on the floating point format (See

Floating point instructions, p. 112)

Reminder concerning ASCII code:

All of the 256 alphanumeric and control characters can be coded on 8 bits. This code called ASCII (American Standard Code for Information Interchange) is compatible with the notion of bytes. Any table of n bytes can therefore be formed by n ASCII codes defining n characters.

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Advanced instructions

binary-->ASCII conversion

General

Structure

These functions are used to convert a numeric value (single or double length word) into a string of ASCII coded characters.

Each digit and the value sign in the parameter is coded in ASCII in an element of the result byte table.

l l

Function INT_TO_STRING : The content of a single length word can be between

-32768 and +32767, that is 5 digits plus the sign; the result will be a table of 6 characters plus the string end. The sign '+' or '-' is stored in the first character and the units in the sixth character, the tens in the fifth, and so on.

Function DINT_TO_STRING : The content of a double length word can be between -2147483648 and +2147483647, that is 10 digits plus the sign; the result will be a table of 12 characters plus the string end. The sign '+' or '-' is stored in the first character, the units in the twelfth character, the tens in the eleventh, and so on. The second character is always 0.

Ladder language

OPERATE

%MB10:7:=INT_TO_STRING(%MW20)

OPERATE

%MB2:13:=DINT_TO_STRING(%MD30)

Instruction list language

LD TRUE

[%MB10:7:=INT_TO_STRING(%MW20)]

Structured text language

%MB2:13:=DINT_TO_STRING(%MD30) ;

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Advanced instructions

Examples Binary-->ASCII conversion

%MB10:7:=INT_TO_STRING(%MW20) with %MW20 = - 3782 in decimal

==> The result is stored in the table of 7 bytes according to %MB10:

Illustration

%MB 10 11 12 13 14 15 16

‘_’ ‘0’ ‘3’ ‘7’ ‘8’ ‘2’ Ø

Syntax

Example: %MB2:13:=DINT_TO_STRING(%MD30) with %MD30 = - 234701084

Illustration

%MB 2 3 4 5 6 7 8 9 10 11 12 13 14

‘-’ ‘0’ ‘0’ ‘2’ ‘3’ ‘4’ ‘7’ ‘0’ ‘1’ ‘0’ ‘8’ ‘4’ Ø

Binary-->ASCII conversion operators

Syntax

Result:= INT_TO_STRING (value)

Binary-->ASCII conversion operands

Type Result (res)

Table of 6 bytes + string end %MB:7

Words which can be indexed -

Words which can not be indexed

value

%MW,%KW,%Xi.T

%IW,%QW,%SW,%NW,Imm.val.,Nu m. Expr.

Binary-->ASCII (double words) conversion operators

Syntax

Result:= DINT_TO_STRING (value)

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Advanced instructions

Binary-->ASCII (double words) conversion operands

Type Result (res)

Table of 12 bytes + string end %MB:13

Words which can be indexed -

Words which can not be indexed

value

%MD,%KD

%ID,%QD,%SD,Imm.val.,Num. expr.

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ASCII-->binary conversion

General

Structure

These functions are used to convert a string of characters representing a numeric value into binary (result transferred into a single or double length word). Each element of the table in the parameter represents the ASCII code of a character.

Authorized characters are the digits and the characters '+' and '-'.

l l

Function STRING_TO_INT : converts a string of 6 characters representing a numeric value between -32768 et +32767. The first character must represent the sign and the following characters the value: the second, the tens of thousands;…

; the sixth character, the units. The value must be set to the right of the string.

Function STRING_TO_DINT : converts a chain of 12 characters representing a numeric value between -2147483648 and +2147483647. The first character must represent the sign and the following characters the value: The second character is 0; the third, the billions;… ; the twelfth, the units. The value must be set to the right of the string.

Ladder language

OPERATE

%MW13:=STRING_TO_INT(%MB20:7)

Examples

Instruction list language

LD TRUE

[%MW13:=STRING_TO_INT(%MB20:7)]

Structured text language

%MD2:=STRING_TO_DINT(%MB30:13) ;

Example: %MW13:=STRING_TO_INT(%MB20:7) , with

%MB 20 21 22 23 24 25 26

‘-’ ‘0’ ‘2’ ‘3’ ‘4’ ‘7’ Ø

The result in %MW13 = -2347 in decimal

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Syntax

Advanced instructions

ASCII-->Binary conversion operators

Syntax

Result:= STRING_TO_INT (string)

ASCII-->Binary conversion operands

Type Result (res)

Words which can be indexed %MW value

Words which can not be indexed

%QW,%SW,%NW

Table of 6 bytes + string end -

%MB:7,%KB:7,Imm.val.

Note: The %S18 bit is set if the value described by the string is not between -32768 et +32767 or if one of the 6 characters is invalid.

ASCII-->Binary (double words) conversion operators

Syntax

Result:= DINT_TO_STRING (string)

ASCII-->Binary (double words) conversion operands

Type Result (res)

Words which can be indexed %MD

Words which can not be indexed

Table of 12 bytes + string end -

%QD,%SD value

%MB:13,%KB:13,Imm.val.

Note: The %S18 bit is set if the value described by the string is not between -

2147483648 et +2147483647 or if one of the 12 characters is invalid.

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Advanced instructions

Floating point-->ASCII conversion

General This function is used to convert a real numeric value contained in a floating word into a string of ASCII coded characters. The result is transferred to a table of 13 bytes + the string end.

Each digit of the value as well as the characters '+', '-', '.', 'e' and 'E' are coded in

ASCII in an element of the result table.

The value sign is in the first character, the decimal point (.) in the third, the exponent

'e' in the tenth, the exponent sign in the eleventh.

Structure Ladder language

OPERATE

%MB20:14:=REAL_TO_STRING(%MF30)

Examples

Instruction list language

LD TRUE

[%MB20:14:=REAL_TO_STRING(%MF30)]

Structured text language

%MB20:14:=REAL_TO_STRING(%MF30) ;

Example: %MB20:14:=REAL_TO_STRING(%MF30) with %MF30=-

3.234718e+26

===> Result:

%MB 20 21 22 23 24 25 26 27 28 29 30 31 32 33

‘-’ ‘3’ ‘.’ ‘2’ ‘3’ ‘4’ ‘7’ ‘1’ ‘8’ ‘e’ ‘+’ ‘2’ ‘6’ Ø

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Syntax

Advanced instructions

Floating point-->ASCII conversion operators

Syntax

Result:= REAL_TO_STRING (value)

Floating point-->ASCII conversion operands

Type Result (res)

Table of 13 bytes + string end %MB14

Words which can be indexed -

Words which can not be indexed

value

%MF,%KF

Imm.val.,Num. expr.

Note: The %S18 bit is set to 1if the floating value in the parameter is not between

3.402824e+38 and -1.175494e-38 or +1.175494e-38 and +3.402824e+38. In this case, the result value is invalid.

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Advanced instructions

ASCII-->Floating point conversion

General

Structure

This function is used to convert a string of characters representing a real numeric value into a floating point value (result transferred into a floating word).

Each element of the table in the parameter represents the ASCII code of a character. Authorized characters are the digits and the characters ‘+’, ‘-’, ‘.’, ‘e’ and

‘E’. The string end is not used to determine the end of the string which means that the 13 characters of the table must all be correct.

The value sign must be in the first character, the decimal point (.) in the third, the ‘e’ in the tenth, the exponent sign in the eleventh. For example, the value 3.12 must be given in the form ‘+3.120000e+00’.

Ladder language

OPERATE

%MF18:=STRING_TO_REAL(%MB20:13)

Examples

Instruction list language

LD TRUE

[%MF18:=STRING_TO_REAL(%MF20:13)]

Structured text language

%MB18:=STRING_TO_REAL(%MB20:13) ;

Example: %MF18:=STRING_TO_REAL(%MB20:13) with

%MB 20 21 22 23 24 25 26 27 28 29 30 31 32

‘-’ ‘3’ ‘.’ ‘2’ ‘3’ ‘4’ ‘7’ ‘1’ ‘8’ ‘e’ ‘+’ ‘2’ ‘6’

===> result: %MF18 = -3.234718e+26

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Syntax

Advanced instructions

ASCII-->Floating point conversion operators

Syntax

Result:= STRING_TO_REAL (string)

ASCII-->Floating point conversion operands

Type Result (res)

Words which can be indexed %MF

Table of 13 bytes value

%MB:13,%KB:13,Immediate value

Note: The %S18 bit is set to 1: l if the value described by the string is not between -3.402824e+38 and -

1.175494e-38 l if the value described by the string is not between +1.175494e-38 et

+3.402824e+38 l if one of the 13 characters is invalid.

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Advanced instructions

Concatenation of two strings

General

Structure

These instructions perform the concatenation of two strings of characters defined in parameters. The result is a byte table containing a string of characters.

Ladder language

OPERATE

%MB30:14:=CONCAT(%MB4:6,%MB14:9)

Examples

Instruction list language

LD TRUE

[%MB30:14:=CONCAT(%MB4:6,%MB14:9)]

Structured text language

%MB30:14:=CONCAT(%MB4:6,%MB14:9) ;

Example: %MB30:14:=CONCAT(%MB4:6,%MB19:9)

%MB 4 5 6 7 8 9

‘i’ ‘n’ ‘c’ ‘o’ ‘n’ Ø

%MB 14 15 16 17 18 19 20 21 22

‘t’ ‘e’ ‘s’ ‘t’ ‘a’ ‘b’ ‘l’ ‘e’ Ø

%MB 30 31 32 33 34 35 36 37 38 39 40 41 42 43

‘i’ ‘n’ ‘c’ ‘o’ ‘n’ ‘t’ ‘e’ ‘s’ ‘t’ ‘a’ ‘b’ ‘l’ ‘e’ Ø

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Syntax

Advanced instructions

String concatenation operators

Syntax

Result:= CONCAT (string 1, string 2)

String concatenation operands

Type

Byte tables

Result (res)

%MB:L

String 1 and 2

%MB:L,%KB;L,Immediate value

Note: l If the result table is too short, it is truncated and the system bit %S15 is set to 1.

%MB30:10:=CONCAT(%MB4:6, %MB14:9 )

%MB 30 31 32 33 34 35 36 37 38

‘i’ ‘n’ ‘c’ ‘o’ ‘n’ ‘t’ ‘e’ ‘s’ ‘t’

‘Ø’ ==>%S15=1 l If the result table is too long, the string is completed with end characters 'Ø'.

%MB30:15:=CONCAT(%MB4:6,%MB14:9)

%MB 30 31 32 33 34 35 36 37 38 39 40 41 42

‘i’ ‘n’ ‘c’ ‘o’ ‘n’ ‘t’ ‘e’ ‘s’ ‘t’ ‘a’ ‘b’ ‘l’ ‘e’

‘Ø’ ‘Ø’

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Advanced instructions

Deletion of a substring of characters

General

Structure

Deletes a number of characters (zone of length L), from a given rank onwards

(position of the first character to be deleted) in the string defined in the parameter.

The result is a byte table containing a string of characters.

Ladder language

OPERATE

%MB14:9:=DELETE(%MB30:14,%MW2,%MW4)

Examples

Instruction list language

LD TRUE

[%MB14:9:=DELETE(%MB30:14,%MW2,%MW4)]

Structured text language

%MB14:9:=DELETE(%MB30:14,%MW2,%MW4) ;

Example: %MB314:9:=DELETE(%MB30:14,%MW2,%MW4) with %MW2 = 5 (5 characters to be deleted ) %MW4 = 3 (position = 3)

%MB 30 31 32 33 34 35 36 37 38 39 40 41 42 43

‘i’ ‘n’ ‘c’ ‘o’ ‘n’ ‘t’ ‘e’ ‘s’ ‘t’ ‘a’ ‘b’ ‘l’ ‘e’ Ø

%MB 14 15 16 17 18 19 20 21 22

‘t’ ‘e’ ‘s’ ‘t’ ‘a’ ‘b’ ‘l’ ‘e’ Ø

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Syntax

Advanced instructions

Operator for deletion of a substring of characters

Syntax

Result:= DELETE (string 1, long, pos)

Operands for deletion of a substring of characters

Type

Byte tables

Indexable words

Non-indexable word

Result (res)

%MB:L

String

%MB:L,%KB;L,Imme diate value

Long (length), Pos

(position)

%MW,%KW,%Xi.T

%IW,%QW,%SW,%NW,

Imm.val., Num. Expr.

Note: Possibility of overlap between the parameters following the indexes of the

PL7 objects: l l l

Table containing the source string.

Table containing the result string.

Word containing the length to be deleted.

l Word containing the position of the first character to be deleted.

A negative length or position is interpreted as being equal to 0. The parameter position starts at the value 1, which corresponds to the first position in the string of characters.

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Advanced instructions

Inserting a substring of characters

General

Structure

Insertion of the substring of characters defined by the second parameter (string2) in the string of characters defined by the first parameter (string1).

The insertion is carried out in the first string, after the character situated at the position given by the parameter position (Pos).

The result of the insertion is a new string of characters transferred into a byte table.

Ladder language

OPERATE

%MB2:14:=INSERT(%MB20:9,%MB30:5,%MW40)

Examples

Instruction list language

LD TRUE

[%MB2:14:=INSERT(%MB20:9,%MB30:6,%MW40)]

Structured text language

%MB2:14:=INSERT(%MB20:9,%MB30:6,%MW40);

Example: %MB2:14:=INSERT(%MB20:9,%MB30:6,%MW40) with %MW40=position 2

%MB 20 21 22 23 24 25 26 27 28

‘i’ ‘n’ ‘s’ ‘t’ ‘a’ ‘b’ ‘l’ ‘e’ Ø

%MB 30 31 32 33 34 35

‘c’ ‘o’ ‘n’ ‘t’ ‘e’ Ø

%MB 2 3 4 5 6 7 8 9 10 11 12 13 14

‘i’ ‘n’ ‘c’ ‘o’ ‘n’ ‘t’ ‘e’ ‘s’ ‘t’ ‘a’ ‘b’ ‘l’ ‘e’

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Syntax

Advanced instructions

Operators for insertion of a substring of characters

Syntax

Result:=INSERT (string1, string2, pos)

Operands for insertion of a substring of characters

Type

Byte tables

Indexable words

Non-indexable words

Result (res)

%MB:L

String 1 and 2

%MB:L,%KB;L

Pos (position)

%MW,%KW,%Xi.T

%IW,%QW,%SW,%NW,

Imm.val., Num. Expr.

l l l

Note: l The parameter position starts at the value 1 which corresponds to the first position in the string of characters.

l It is impossible to carry out an insertion at the beginning of a string. For this, use the CONCAT function.

If the table is too long, it is completed with end characters.

Word containing the position of the first character to be deleted.

The system bit %S15 is set to 1 in the following cases: l The value of the parameter position is negative or equal to 0. In this case, it l is interpreted as being equal to 0 and the result table contains an empty string

(made up of string end characters).

The result table is too short; it is then truncated.

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Advanced instructions

Replacing a substring of characters

General

Structure

Replaces a section of a string of characters defined in the source table (string1) with a substring of characters defined in the replacement table (string2). The replacement which is to be made is defined by the position (pos.) and length (long.) parameters. This length corresponds to the length of the string which disappears and not to the length of the substring which replaces it.

Ladder language

OPERATE

%MB2:13:=REPLACE(%MB20:12,%MB30:9,

%MW40,%MW41)

Examples

Instruction list language

LD TRUE

[%MB2:13:=REPLACE(%MB20:12,%MB30:9,%MW40,%MW41)]

Structured text language

%MB2:13:=REPLACE(%MB20:12,%MB30:12,%MW40,%MW41);

Example: %MB2:13:=REPLACE(%MB20:12,%MB30:12,%MW40,%MW41) with %MW40=3 (length=3) and %MW41=9 (position 9)

%MB 20 21 22 23 24 25 26

Chaîne 1

27 28

‘m’ ‘i’ ‘s’ ‘e’ ‘_’ ‘e’ ‘n’ ‘_’ ‘r’

29 30 31

‘u’ ‘n’ Ø

%MB 30 31 32 33 34 35

Chaîne 2

‘s’ ‘t’ ‘o’ ‘p’ Ø ‘r’

36 37 38

‘u’ ‘n’ Ø

%MB 2 3 4 5 6 7 8 9 10 11 12 13 14

‘m’ ‘i’ ‘s’ ‘e’ ‘_’ ‘e’ ‘n’ ‘_’ ‘s’ ‘t’ ‘o’ ‘p’ Ø

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Syntax

Advanced instructions

Operators for replacement of a substring of characters

Syntax

Result:=REPLACE (string1, string2, long., pos.)

Operands for replacement of a substring of characters

Type Result (res) String 1 and 2

Byte tables

Indexable words

Non-indexable words

%MB:L

%MB:L,%KB;L

Long (length), Pos

(position)

%MW,%KW,%Xi.T

%IW,%QW,%SW,%NW,

Imm.val., Num. Expr.

l l l

Note: l The parameter position starts at the value 1 which corresponds to the first position in the string of characters.

l If the output table is too long, the string is completed with end characters.

The system bit %S15 is set to 1 in the following cases: l If the value of the position parameter is negative or equal to 0. In this case, it is interpreted as being equal to 0 and the result table contains an empty string

(made up of string end characters).

l If the position parameter is greater or equal to the length of the source string, the result table will contain an empty string (made up of end characters).

If the result table is too short; it is truncated.

Word containing the position of the first character to be deleted.

If the position of the first string end is less than or equal to the position of the first character which is to be replaced, the output table will be a copy of the source table up until the string end, completed by end characters.

TLX DR PL7 xxE

189

Advanced instructions

Extracting a substring of characters

General

Structure

Extraction of a number of characters from a source string entered as a parameter

(string).

The rank of the first character to be extracted is determined by the position parameter (pos.), and the number of characters to be extracted is determined by the length parameter (length). The extracted string is stored in a byte table (result).

Ladder language

OPERATE

%MB14:7:=MID(%MB30:13,%MW2,%MW4)

Examples

Instruction list language

LD TRUE

[%MB14:7:=MID(%MB30:13,%MW2,%MW4)]

Structured text language

%MB14:7:=MID(%MB30:13,%MW2,%MW4);

Example: %MB14:7:=MID(%MB30:13,%MW2,%MW4) with %MW2=4 (length) and %MW4=9 (position)

%MB 30 31 32 33 34 35 36 37 38 39 40 41 42

‘m’ ‘i’ ‘s’ ‘e’ ‘_’ ‘e’ ‘n’ ‘_’ ‘s’ ‘t’ ‘o’ ‘p’ Ø

Résultat :

%MB 14 15 16 17 18 19 20

‘s’ ‘t’ ‘o’ ‘p’ Ø Ø Ø

190

TLX DR PL7 xxE

Syntax

Advanced instructions

Operators for extraction of a substring of characters

Syntax

Result:=MID (string, length, position)

Operands for extraction of a substring of characters

Type

Byte tables

Indexable words

Non-indexable words

Result String

%MB:L,Imm.val..

%MB:L,%KB;L

Length, Pos (position)

%MW,%KW,%Xi.T

%IW,%QW,%SW,%NW,

Imm.val., Num. Expr.

l l

Note: l The position parameter starts at the value 1 which corresponds to the first position in the string of characters.

If the output table is too long, the string is completed with end characters.

If the length set as a parameter is greater than the size of the source string, the result table will contain the source string.

l If the last element of the table or the string end is reached before the number of characters defined by the parameter length has been extracted, the extraction stops there.

The system bit %S15 is set in the following cases: l If the value of the parameter length to be extracted is negative or zero. In this case, it is interpreted as being equal to 0 and the result table contains an empty l string (made up of string end characters).

If the value of the position parameter at the start of the extraction is zero or greater than or equal to the length of the table or greater than or equal to the l position of the first string end. In this case, the result table contains an empty string (made up of string end characters).

If the result table is too short; it is truncated.

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191

Advanced instructions

Extracting characters

General

Structure

Extraction of a number of characters the furthest to the left (LEFT) or the furthest to the right (RIGHT) in a source string entered as a parameter (string).

The number of characters which is to be extracted is defined by the length parameter. The extracted string is stored in a byte table (result).

Ladder language

OPERATE

%MB10:10:=LEFT(%MB30:13,%MW2)

Examples

Instruction list language

LD TRUE

[%MB10:10:=LEFT(%MB30:13,%MW2)]

Structured text language

%MB10:10:=LEFT(%MB30:13,%MW2);

Example: %MB10:10:=LEFT(%MB30:13,%MW2) with %MW2=8 (length)

%MB 30 31 32 33 34 35 36 37 38 39 40 41 42

‘m’ ‘i’ ‘s’ ‘e’ ‘_’ ‘e’ ‘n’ ‘_’ ‘s’ ‘t’ ‘o’ ‘p’ Ø

Résultat :

%MB 10 11 12 13 14 15

‘m’ ‘i’ ‘s’ ‘e’ ‘_’ ‘e’

‘n’

17 18 19

‘_’ Ø Ø

192

TLX DR PL7 xxE

Syntax

Advanced instructions

Operators for extraction of characters

Syntax

Result:=LEFT (string, length)

Result:=RIGHT (string, length)

Operands for extraction of characters

Type

Byte tables

Result

%MB:L

Indexable words

Non-indexable words

String

%MB:L,%KB;L,Imm. val.

Length, Pos (position)

%MW,%KW,%Xi.T

%IW,%QW,%SW,%NW,

Imm.val., Num. Expr.

Note: l l

If the output table is too long, the result string is completed with end characters.

If the length in the parameter is greater than the size of the source string, the result table will contain the source string.

The system bit %S15 is set to 1 in the following cases: l If the value of the length parameter to be extracted is negative or zero. In this case, the result table contains an empty string (made up of string end l l characters).

If the value of the position parameter at the start of the extraction is zero or greater than or equal to the length of the table or greater than or equal to the position of the first string end. In this case, the result table contains an empty string (made up of string end characters).

If the result table is too short; it is truncated.

TLX DR PL7 xxE

193

Advanced instructions

Comparing two character strings

General

Structure

Comparison of two character strings. The result is a word containing the position of the first different character.

In the case of perfect equality between the two character strings, the result value is

-1.

Ladder language

OPERATE

%MW2:=EQUAL_STR(%MB18:14,%MB50:14)

Examples

Instruction list language

LD TRUE

[%MW2:=EQUAL_STR(%MB18:14,%MB50:14)]

Structured text language

%MW2:=EQUAL_STR(%MB18:14,%MB50:14);

Example: %MW2:=EQUAL_STR(%MB18:14,%MB50:14) with

%MB 18 19 20 21 22 23 24 25 26 27 28 29 30 31

‘a’ ‘b’ ‘c’ ‘d’ ‘e’ ‘f’ ‘g’ ‘h’ ‘i’ ‘p’ ‘w’ ‘x’ ‘y’ ‘z’

Résultat :

%MB 50 51 52 53 54 55 56 57 58 59

‘a’ ‘b’ ‘c’ ‘d’ ‘?’ ‘f’ ‘g’ ‘h’ ‘Ø’

60 61 62 63

‘w’ ‘x’ ‘y’ ‘z’

==> MW2:= 5

194

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Syntax Operators for comparison of two character strings

Syntax

Result:=EQUAL_STR (string1, string2)

Operands for comparison of two character strings

Type

Byte tables

Indexable words

Non-indexable words

Result

%MW -

%QW,%SW,%NW -

String 1 and 2

%MB:L,%KB;L,Imm. val.

Advanced instructions l l

Note:

A negative length or position is interpreted as being equal to 0.

Upper case letters are different from lower case letters.

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195

Advanced instructions

Searching for a character substring

General

Structure

Search for the substring of characters defined by the second parameter in the character string defined by the first parameter.

The result is a word containing the position, in the first string, of the beginning of the searched substring.

In case of failure in the search, the result value is -1.

Ladder language

OPERATE

%MW2:=FIND(%MB18:14,%MB50:4)

Examples

Instruction list language

LD TRUE

[%MW2:=FIND(%MB18:14,%MB50:4)]

Structured text language

%MW2:=FIND(%MB18:14,%MB50:4);

Example: %MW2:=FIND(%MB18:14,%MB50:4) with:

%MB 18 19 20 21 22 23 24 25 26 27 28 29 30

‘a’ ‘b’ ‘c’ ‘d’ ‘e’ ‘f’ ‘g’ ‘h’ ‘i’ Ø ‘w’ ‘x’ ‘y’

‘z’

%MB 50 51 52 53

‘f’ ‘g’ ‘h’ Ø

==> MW2:= 6 Indicates that the beginning of the searched string starts at the sixth character.

196

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Syntax Search operators for character substrings

Syntax

Result:=FIND (string1, string2)

Search operands for characters substrings

Type

Indexable words

Non-indexable words

Byte tables

Result

%MW

%QW,%SW,%NW -

String 1 and 2

%MB:L,%KB;L,Imm. val.

Advanced instructions

Note: A negative length or position is interpreted as being equal to 0.

TLX DR PL7 xxE

197

Advanced instructions

Length of a character string

General

Structure

This function returns the length of the character string in the parameters, i.e. the number of characters before the string end.

Ladder language

OPERATE

%MW2:=LEN(%MB20:14)

Examples

Syntax

Instruction list language

LD TRUE

[%MW2:=LEN(%MB20:14)]

Structured text language

%MW2:=LEN(%MB20:14);

Example: %MW2:=LEN(%MB20:14 with: ))

%MB 20 21 22 23 24 25 26 27 28 29 30 31

‘a’ ‘b’ ‘c’ ‘d’ ‘e’ ‘f’ ‘g’ ‘Ø’ ‘n’ o’ ‘p’ ‘r’

==> MW2:= 7

Operator for length of a character string

Syntax

Result:=LEN (string)

Operands for length of a characters string

Type

Indexable words

Non-indexable words

Byte tables

Result

%MW

%QW,%SW,%NW -

String 1 and 2

%MB:L,%KB;L,Imm. val.

Note: If no string end is found, this function returns the size of the table as indicated in: "Formats of a character string or character table" (See

Format of a string of characters or table of characters, p. 168).

198

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2.8

Advanced instructions

Time management instructions: Dates, Times,

Duration

Introduction

Aim of this subsection

What's in this

Section?

This sub-section describes the time management instructions: Dates, Times,

Duration, of PL7 language

This Section contains the following Maps:

Topic

Format of parameters in the time management instructions

Using system bits and words

Real time clock function

Reading system date

Updating the system date

Reading stop date and code

Reading day of the week

Addition / Subtraction of a duration from a date

Addition / Subtraction of a duration from a time of day

Interval between two dates (without time)

Interval between two dates (with time)

Interval between two times

Conversion of a date into a string of characters

Conversion of a complete date into a string of characters

Conversion of a duration into a string of characters

Conversion of a time of day to a character string

Conversion of a duration into HHHH:MM:SS

Page

TLX DR PL7 xxE

199

Advanced instructions

Format of parameters in the time management instructions

General The Date, Time, Duration parameters used by these instructions correspond to the typical formats defined by the standard IEC1131-3.

Duration Format

(TIME Type)

This format is used to encode durations periods expressed in tenths of a second and corresponds to the TIME format in the standard.

Such values are displayed in the form: sssssssss.d

This gives for example: 3674.3 , for 1 hour, 1 minute, 14 seconds et 3 tenths

The value is coded in 32 bits (a double word) with the range fixed at [0, 4294967295] tenths of a second, which represents approximately 13 years and 7 months.

Note: Only values within the interval [00:00:00, 23:59:59] are allowed.

Date Format

(DATE Type)

This format is used to code the year, the month and the day. It corresponds to the

DATE format in the standard.

The value is displayed in the form: yyyy-mm-dd

This gives for example: 1984-06-25

The value is coded in BCD in 32 bits (a double word) with 3 fields:

Year

16 8

Month Day

Year: 4 digits

Month: 2 digits

Day: 2 digits

Example, expressed in hexadecimals:

19H 84H 06H 25H = 1984-06-25

Note: Only values within the interval [1990-01-01, 2099-12-31] are allowed.

200

TLX DR PL7 xxE

Time of day

Format (TOD

Type)

Advanced instructions

This format is used to code the hour, the minutes and the seconds. It corresponds to the TIME_OF_DAY format in the standard.

The value is displayed in the form: hh:mm:ss

This gives for example: 23:12:34

The value is coded in BCD in 32 bits (a double word) with 3 fields:

31 24 16 8 0

Hour Mins.

Sec.

Hours: 2 digits (most significant words)

Minutes: 2 digits (most significant words)

Seconds: 2 digits (least significant words)

Example, expressed in hexadecimals:

23H 12H 34H = 23:12:34

Note: Only values within the interval [00:00:00, 23:59:59] are allowed.

Date and time

Format (DT Type)

This format is used to code the year, the month, the day, the hour, the minutes and the seconds. It corresponds to the DATE_AND_TIME format in the standard.

The value is displayed in the form: yyyy-mm-dd-hh:mm:ss

This gives for example: 1984-06-25-23:12:34

The value is coded in BCD in 64 bits (a table of words of length 4):

Year

48 40

Month Day

Hour

Mins.

Sec.

8 0

Example, expressed in hexadecimals:

1984H 06H 25H 23H 12H 34H

Note: Only values within the interval [1990-01-01-00:00:00, 2099-12-31-23:59:59] are allowed.

TLX DR PL7 xxE

201

Advanced instructions

Hour, Minute,

Second Format

(HMS Type)

This format used exclusively by the TRANS_TIME function is used to code the hours, the minutes and the seconds.

The value is displayed in the form: hh:mm:ss

This gives for example: 23:12:34

The value is coded in BCD in 32 bits (a double word) with 3 fields:

31 16 8 0

Hour Mins.

Sec.

Hours: 4 digits (most significant words)

Minutes: 2 digits (least significant words)

Seconds: 2 digits (least significant

Example, expressed in hexadecimals:

23H 12H 34H = 23:12:34

202

TLX DR PL7 xxE

Advanced instructions

Using system bits and words

System bit %S17 The system bit %S17 is set in the following cases: l l

Result of an operation outside the range of permitted values

An input parameter cannot be interpreted and is not coherent with the desired format (DATE, DT or TOD) l l

Operation on a Time of Day (TOD) format involving a change of day

Real time clock access conflict

System bit %S15 The system bit %S15 is set to 1 when a string is being written in a table, when this string is longer than the size of the table.

System words System words: l %SD18 : absolute time counter is also used to calculate durations (incremented l every 1/10 of a second by the system)

%SW49 à %SW53 (See

Description of system words %SW48 to %SW59, p. 302)

can also be used to display dates

TLX DR PL7 xxE

203

Advanced instructions

Real time clock function

General

Syntax

This function is used to send commands at predefined or calculated times and dates.

It sets the output parameter OUT to 1 providing the date provided by the PLC clock at the moment of the function call falls within the period programmed in the input parameters.

Real time clock function operator

SCHEDULE (DBEG, DEND, WEEK, HBEG, HEND, OUT)

Characteristics of parameters:

Output OUT

Start date

End date

Day of the week

DBEG

DEND

WEEK

Start time

End time

HBEG

HEND

Bit containing the result of the comparisons made by the real time clock function: at 1 during the periods defined by the parameters.

Word encoding the start date of the period (monthdate) in BCD (thresholds: 01-01 to 12-31)

Word encoding the end date of the period (monthdate) in BCD (thresholds: 01-01 to 12-31)

Word encoding the day or days of the week which are included in the period defined by the parameters

DBEG and DEND.

The 7 least significant bits represent the 7 days of the week: bit 6 = Monday, bit 5 = Tuesday,…, bit 0 =

Sunday.

Double word encoding the start time of the period in the day (hours-minutes-seconds) in Time of Day

BCD format (type: TOD). Thresholds: 00:00:00,

23:59:59

Double word encoding the end time of the period in the day (hours-minutes-seconds) in Time of Day

BCD format (type: TOD). Thresholds: 00:00:00,

23:59:59

204

TLX DR PL7 xxE

Structure

Advanced instructions

Ladder language

OPERATE

SCHEDULE(%KW0,%KW1,%KW2,%KD3,%KD5,%M0)

Examples

Instruction list language

LD TRUE

[SCHEDULE(%KW0,%KW1,%KW2,%KD3,%KD5,%M0)]

Structured text language

SCHEDULE(%KW0,%KW1,%KW2,%KD3,%KD5,%M0) ;

Example: Programming 2 non-continuous time ranges

SCHEDULE (16#0501,

16#1031,

2#0000000001111100,

16"08300000,

16#12000000,

%M0

);

SCHEDULE (16#0501,

16#1031,

2#0000000001111100,

16"14000000,

16#18000000,

%M1

);

%Q0.0:=%M0 OR %M1;

(*start date: 1st May*)

(*end date: 31st October*)

(*Monday to Friday*)

(*start time: 8.30a.m.*)

(*end time: 6p.m.*)

(*result in %M0*)

(*start date: 1st May*)

(*end date: 31st October*)

(*Monday to Friday*)

(*start time: 2p.m.*)

(*end time: 6p.m.*)

(*result in %M1*)

TLX DR PL7 xxE

205

Advanced instructions

Operands Real time clock function operands

Type

Indexable words

Non-indexable words

Indexable double words

Non-indexable double words

Bits

DBEG,DEND,WEEK HBEG,HEND

%MW,%KW,%Xi.T

%IW,%QW,%SW,%N

W,Imm.val.,Num.expr.

%MD,%KD

%ID,%QD,Imm.val.,

Num.expr.

OUT

%I,%Q,%M,%S,

%BLK,%*:Xk,%X

Note: l The 2 parameters DBEG and DEND define a range of days in the year; this range can overlap 2 civil years. Example: from 10th October to 7th April. The l

29th February can be included in this period; it will ignored in non-leap years.

The 2 parameters HBEG and HEND define a range of time in the day; this range can overlap 2 civil days. Example: from 10p.m. to 6:10:20a.m.

l If one of the DBEG and DEND dates or one of the HBEG and HEND times is invalid, i.e. it does not correspond to a real date or time, the OUT output will be at 0 and the %S17 bit will be set to 1.

l l

If the target PLC does not have an internal clock (as in TSX37-10), the output will be at 0 and the system bit %S17 will be set to 1.

It is possible to lighten the load on a PLC processor where precision is not important by cadencing the call to the SCHEDULE function using the system bit

%S6 or %S7.

206

TLX DR PL7 xxE

Advanced instructions

Reading system date

General

Structure

Reading the system date (Real Time Clock) and transferring into the object set in the parameters in Date and Time format (DT).

Ladder language

%M6

OPERATE

RRTC(%MW2:4)

Examples

Syntax

Instruction list language

LD %M6

[RRTC(%MW2:4)]

Structured text language

IF %M6 THEN

RRTC(%MW2:4) ;

END_IF;

Example: RRTC(%MW2:4)

The result is transferred to the table of internal words of length 4: %MW2 to %MW5.

System date read operator

Syntax

RRTC (date)

System date read operands

Type

Table of 4 Words in Date and

Time format

Date

%MW:4

TLX DR PL7 xxE

207

Advanced instructions

Updating the system date

General

Structure

Updating the system date (Real Time Clock) and transferring into the object given in parameter in Date and Time format (DT).

Language data

%M7

OPERATE

%MW2:=16#4300

OPERATE

%MW3:=16#1732

OPERATE

%MW4:=16#1124

OPERATE

%MW5:=16#1995

OPERATE

WRTC(%MW2:4)

Instruction list language

LD %M7

[%MW2:=16#4300]

[%MW3:=16#1732]

[%MW4:=16#1124]

[%MW5:=16#1995]

[WRTC(%MW2:4)]

Structured text language

IF %M7 THEN

%MW2:=16#4300 ;

%MW3:=16#1732 ;

%MW4:=16#1124 ;

%MW5:=16#1995 ;

WRTC(%MW2:4) ;

END_IF;

208

TLX DR PL7 xxE

Examples

Syntax

Advanced instructions

Example: The new date is loaded into an internal word table with a length of 4

%MW2:4, then sent to the system by the WRTC functions

System date updating operator

Syntax

WRTC (date)

System date updating operands

Type

4 Word Table

Date

%MW:4,%KW:4 in date and time format

TLX DR PL7 xxE

209

Advanced instructions

Reading stop date and code

General

Structure

Reading of the date of the last PLC stop and of the code specifying the cause of this stop (in the 5th word, equivalent to %SW58 (See Description of system words

%SW48 to %SW59, p. 302))

Ladder language

%M7

OPERATE

PTC(%MW4:5)

Examples

Syntax

Instruction list language

LD %M7

[PTC(%MW4:5)]

Structured text language

IF %M7 THEN

PTC(%MW4:5) ;

END_IF;

Example: PTC(%MW4:5)

The result is transferred to the table of internal words of length 5: %MW4 to %MW8

Read stop date and code operator

Syntax

PTC (date)

Read stop date and code operands

Type

5 Word table in Date and Time format

Date

%MW:5

210

TLX DR PL7 xxE

Advanced instructions

Reading day of the week

General

Structure

This result of this function is to supply current day of the week information in the form of a digit between 1 and 7 transferred in a word (1 = Monday, 2 = Tuesday, 3 =

Wednesday, 4 = Thursday. 5 = Friday, 6 = Saturday, 7 = Sunday).

Ladder language

%M7

OPERATE

%MW5:=DAY_OF_WEEK()

Examples

Syntax

Instruction list language

LD %M7

[%MW5:=DAY_OF_WEEK()]

Structured text language

IF %M7 THEN

%MW5:=DAY_OF_WEEK() ;

END_IF;

Example: %MW5:=DAY_OF_WEEK()

%MW5:=4 corresponds to Thursday

Read day of the week operator

Syntax

Result:= DAY_OF_WEEK()

Read day of the week operands

Type

Indexable words

Result (res)

%MW

Non-indexable words %QW,%SW,%NW

Note: If the function has not been able to update the result following a real-time clock access error, the result returned is 0 and the system bit %S17 is set at 1.

TLX DR PL7 xxE

211

Advanced instructions

Addition / Subtraction of a duration from a date

General

Structure

Addition or subtraction of a duration (in tenths of a second) (In2) from a source date

(In1). The result is a new date transferred in a 4 word table.

ADD_DT () = Addition of a duration

SUB_DT () = Subtraction of a duration

Ladder language

%M7 OPERATE

RRTC(%MW2:4)

OPERATE

%MD8:=906

OPERATE

%MW2:4:=ADD_DT(%MW2:4,%MD8)

OPERATE

WRTC(%MW2:4)

Instruction list language

LD %M7

[RRTC(%MW2:4)]

[%MD8:=906]

[%MW2:4:=ADD_DT(%MW2:4,%MD8)]

[WRTC(%MW2:4)]

Structured text language

IF %M7 THEN

RRTC(%MW2:4);

%MD8:=906;

%MW2:4:=ADD_DT(%MW2:4,%MD8) ;

WRTC(%MW2:4);

END_IF;

212

TLX DR PL7 xxE

Examples

Syntax

Advanced instructions

Example: %MW2:4:=ADD_DT(%MW2:4,%MD8)

%MW2:4:= Source date

%MD8:=906 (906 tenths of a second rounded off to 1 min. 31s)

%MW2:4:= New date

Operators for addition/subtraction of a time duration from a date

Syntax

Result:= ADD_DT (In1, In2)

Result:= SUB_DT (In1, In2)

Operands for addition/subtraction of a time duration from a date

Type Result (res)

Tables of 4 Words in

Date and Time format

%MW4

Indexable double words

Non-indexable double words

In1 (source date) In2 (duration)

%MW4:4,%KW:4 -

%MD,%KD

%ID,%QD,Imm.val.,

Num.expr.

l l

Note: l The rounding off principle will be applied to the ‘duration’ parameter (expressed in tenths of a second) to enable the addition or subtraction from the date (precise to the second).

l sssssssss.0 à sssssssss.4 rounded off to sssssssss.0

l sssssssss.5 à sssssssss.9 rounded off to sssssssss.0 +1.0

The application is to provide for the management of leap years.

If the result of the operation is outside the interval for permitted values, the system bit %S17 is set at 1 and the result value is equal to the minimum limit l

(for SUB_DT) or remains blocked at the maximum (for ADD_DT).

If the input parameter ‘source date’ cannot be interpreted and is not coherent in

DT format (DATE_AND_TIME), the system bit %S17 is set at 1 and the result value is equal to 0001-01-01-00:00:00.

TLX DR PL7 xxE

213

Advanced instructions

Addition / Subtraction of a duration from a time of day

General

Structure

Addition or subtraction of a duration to a time of day. The result is a new time of day transferred in a double word.

ADD_TOD () = Addition of a duration

SUB_TOD () = Subtraction of a duration

Ladder language

%M7

OPERATE

%MD8:=906

OPERATE

%MD2:=ADD_TOD(%MD2,%MD8)

Examples

Instruction list language

LD %M7

[%MD8:=906]

[%MD2:=ADD_TOD(%MD2,%MD8)]

Structured text language

IF %M7 THEN

%MD8:=906;

%MD2:=ADD_TOD(%MD2,%MD8) ;

END_IF;

Example: %MD2:=ADD_TOD(%MD2,%MD8)

%MD2:= Source time (e.g.: 12:30:00)

%MD8:= 906 (906 tenths of a second rounded off to 1 min. 31s)

%MD2:= New time (e.g.: 13:31:31)

214

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Syntax

Advanced instructions

Operators for addition/subtraction of a time duration from a time of day

Syntax

Result:= ADD_TOD (In1, In2)

Result:= SUB_TOD (In1, In2)

Operands for addition/subtraction of a time duration from a time of day

Type

Indexable double words

Non-indexable double words

Result (res)

%MD

%QD

In1 (source time) and In2 (duration)

%MD,%KD

%ID,%QD,Imm.val.,Num.expr.

result and In1 are in TOD format, In2 is in duration format.

Note: l The rounding off principle will be applied to the ‘duration’ parameter (expressed in tenths of a second) to enable the addition or subtraction from the date (precise l to the second).

l sssssssss.0 à sssssssss.4 rounded off to sssssssss.0

l sssssssss.5 à sssssssss.9 rounded off to sssssssss.0 +1.0

The day is changed if the result of the operation is outside the interval for l permitted values. In this case, the system bit %S17 is set at 1 and the value of the result can be interpreted with a 24:00:00 rollover.

If the input parameter ‘time of day’ cannot be interpreted in TOD format, the system bit %S17 is set at 1 and the result value is equal to 00:00:00.

TLX DR PL7 xxE

215

Advanced instructions

Interval between two dates (without time)

General

Structure

Calculates the time interval between two dates. The result, given as an absolute value, is transferred in a double word.

Ladder language

%M7

OPERATE

%MD10:=DELTA_D(%MD2,%MD4)

Examples

Syntax

216

Instruction list language

LD %M7

[%MD10:=DELTA_D(%MD2,%MD4)]

Structured text language

IF %M7 THEN

%MD10:=DELTA_D(%MD2,%MD4) ;

END_IF;

%MD10:=DELTA_D(%MD2,%MD4)

%MD2:= Date number1 (e.g.: 1994-05-01)

%MD4:= Date number2 (e.g.: 1994-04-05)

==> %MD10:= 22464000 (==> interval = 26 days)

Operator for an interval between two dates (without time)

Syntax

Result:= DELTA_D (Date1, Date2)

Operands for an interval between two dates (without time)

Type

Indexable double words

Non-indexable double words

Result (res)

%MD

%QD

Date 1 and 2

%MD,%KD

%ID,%QD,Imm.val.,Num.expr.

result is in TIME format, Date 1 and 2 are in DATE format.

TLX DR PL7 xxE

Advanced instructions

The TIME format is defined with precision to a tenth of a second. The DATE format is defined with precision to a day. The calculated time interval will be a multiple of

864000 (= 1day = 24 h x 60 mn x 60 s x 10 tenths).

Note: l There is overflow if the result exceeds the maximum value permitted for a duration (TIME). In this case, the result is equal to 0 and the system bit %S18 is set at 1.

l If one of the input parameters cannot be interpreted and is not coherent in DATE format, the system bit %S17 is set at 1 and the result is equal to 0.

TLX DR PL7 xxE

217

Advanced instructions

Interval between two dates (with time)

General

Structure

Calculates the time interval between two dates. The result, given as an absolute value, is transferred in a double word.

Ladder language

OPERATE

%MD10:=DELTA_DT(%MW2:4,%MW6:4)

Examples

Instruction list language

LD TRUE

[%MD10:=DELTA_DT(%MW2:4,%MW6:4)]

Structured text language

%MD10:=DELTA_DT(%MW2:4,%MW6:4) ;

%MD10:=DELTA_DT(%MW2:4,%MW6:4)

%MW2:4:= Date number1 (e.g.: 1994-05-01-12:00:00)

%MW6:4:= Date number2 (e.g.: 1994-05-01-12-01-30)

==> %MD10:= 900 (==> interval = 1 minute and 30 seconds)

218

TLX DR PL7 xxE

Syntax

Advanced instructions

Operator for an interval between two dates (with time)

Syntax

Result:= DELTA_DT (Date1, Date2)

Operands for an interval between two dates (with time)

Type

Indexable double words

Non-indexable double words

4 word table in DT format

Result (res)

%MD

%QD

Date 1 and 2

%MW:4,%KW:4 result is in TIME format, Date 1 and 2 are in DT format.

The TIME format is defined with precision to a tenth of a second. The DT format is defined with precision to a second. The calculated time interval is a multiple of 10.

Note: l There is overflow if the result exceeds the maximum value permitted for a duration (TIME). In this case, the result is equal to 0 and the system bit %S18 is set at 1.

l If one of the input parameters cannot be interpreted and is not coherent in DT format, the system bit %S17 is set at 1 and the result is equal to 0.

TLX DR PL7 xxE

219

Advanced instructions

Interval between two times

General

Structure

Calculates the time interval between two times of day. The result is transferred in a double word as an absolute value giving a duration.

Ladder language

OPERATE

%MD10:=DELTA_TOD(%MD2,%MD4)

Examples

Syntax

220

Instruction list language

LD TRUE

[%MD10:=DELTA_TOD(%MD2,%MD4)]

Structured text language

%MD10:=DELTA_TOD(%MD2,%MD4) ;

%MD10:=DELTA_TOD(%MD2,%MD4)

%MD2:= Time1 (e.g.: 02:30:00)

%MD4:= Time2 (e.g.: 02 41 00)

==> %MD10:= 6600 (==> interval = 11 minutes)

Operator for an interval between two times

Syntax

Result:= DELTA_TOD (Date1, Date2)

Operands for an interval between two times

Type

Indexable double words

Non-indexable double words

Result (res)

%MD

%QD

Time 1 and 2

%MD,%KD

%ID,%QD, Immediate value, Numeric expr.

result is in TIME format, Time 1 and 2 are in TOD format.

The TIME format is defined with precision to a tenth of a second. The TOD format is defined with precision to a second. The calculated time interval is a multiple of 10.

TLX DR PL7 xxE

Advanced instructions

Note: If one of the input parameters cannot be interpreted and is not coherent in

TOD format, the system bit %S17 is set at 1 and the result is equal to 0.

TLX DR PL7 xxE

221

Advanced instructions

Conversion of a date into a string of characters

General

Structure

This instruction converts a date into a string of characters (without time) in the following format: YYYY-MM-DD (10 characters). This string ends with an end character Ø. Each character Y,M,D symbolizes a digit.

Ladder language

OPERATE

%MB2:11=DATE_TO_STRING(%MD40)

Examples

Instruction list language

LD TRUE

[%MB2:11=DATE_TO_STRING(%MD40)]

Structured text language

%MB2:11=DATE_TO_STRING(%MD40) ;

%MB2:11=DATE_TO_STRING(%MD40)

%MD40:= Date (e.g.: 1998-12-27)

%MB 2 3 4 5 6 7 8 9 10 11 12

‘1’ ‘9’ ‘9’ ‘8’ ‘-’ ‘1’ ‘2’ ‘-’ ‘2’ ‘7’ Ø

222

TLX DR PL7 xxE

Syntax

Advanced instructions

Date to string conversion operator

Syntax

Result:= DATE_TO_STRING (Date)

Date to string conversion operands

Type

Tables of 11 bytes

Indexable double words

Non-indexable double words

Result (res)

%MB:11

Date

%MD,%KD

%ID,%QD, Immediate value, Numeric expr.

Note: l If the input (date) parameter cannot be interpreted and is not coherent in DATE format, the system bit %S17 is set at 1 and the function returns the string **** l

- ** - ** .

If the output string is too short, it is truncated and the system bit %S15 is set to 1.

%MB2:8 := DATE_TO_STRING(%MD40)

==> %MB 2 3 4 5 6 7 8 9

‘1’ ‘9’ ‘9’ ‘8’ ‘-’ ‘1’ ‘2’ ‘-’

==> %S15 = 1 l If the output string is too long, it is completed with end characters Ø.

%MB2:12 := DATE_TO_STRING(%MD40)

==> %MB 2 3 4 5 6 7 8 9 10 11 12 13

‘1’ ‘9’ ‘9’ ‘8’ ‘-’ ‘1’ ‘2’ ‘-’ ‘2’ ‘7’ Ø Ø

TLX DR PL7 xxE

223

Advanced instructions

Conversion of a complete date into a string of characters

General

Structure

This instruction converts a complete date (with time) into a string of characters in the following format: YYYY-MM-DD-HH:MM:SS (19 characters). This string ends with an end character Ø. Each character Y,M,D,H,M,S symbolizes a digit.

Ladder language

OPERATE

%MB2:20=DT_TO_STRING(%MW50:4)

Examples

Instruction list language

LD TRUE

[%MB2:20=DT_TO_STRING(%MW50:4)]

Structured text language

%MB2:20=DT_TO_STRING(%MW50:4) ;

%MB2:20=DT_TO_STRING(%MW50:4)

%M50:4:= Date and time (type DT) (e.g.: 1998-12-27-23:14:37)

==>

%MB 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

‘1’ ‘9’ ‘9’ ‘8’ ‘-’ ‘1’ ‘2’ ‘-’ ‘2’ ‘7’ ‘-’ ‘2’ ‘3’ ‘:’ ‘1’ ‘4’ ‘:’ ‘3’ ‘7’ Ø Ø

224

TLX DR PL7 xxE

Syntax

Advanced instructions

Complete date to string conversion operator

Syntax

Result:=DT_TO_STRING(Date)

Complete date to string conversion operands

Type

Tables of 20 bytes

4 word table in DT format

Result (res)

%MB:20

Date

%MW:4,%KW:4

Note: l If the (date) input parameter cannot be interpreted and is not coherent in

DT (DATE_AND_TIME) format, the system bit %S17 is set at 1 and the function l returns the string ****-**-**-**:**:** .

If the output string is too short, it is truncated and the system bit %S15 is set to 1.

%MB2:8:=DT_TO_STRING(%MW50:4)

==> %MB 2 3 4 5 6 7 8 9

‘1’ ‘9’ ‘9’ ‘8’ ‘-’ ‘1’ ‘2’ ‘-’

==> %S15 = 1 l If the output string is too long, it is completed with end characters Ø.

%MB2:21:=DT_TO_STRING(%MD50:4)

==>

%MB 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

‘1’ ‘9’ ‘9’ ‘8’ ‘-’ ‘1’ ‘2’ ‘-’ ‘2’ ‘7’ ‘-’ ‘2’ ‘3’ ‘:’ ‘1’ ‘4’ ‘:’ ‘3’ ‘7’ Ø Ø

TLX DR PL7 xxE

225

Advanced instructions

Conversion of a duration into a string of characters

General

Structure

This instruction converts a duration (in TIME format) into a string of characters. The format of the result is in hours, minutes, seconds and tenths of a second expressed in 15 characters: HHHHHH:MM:SS.D. This string ends with the end character Ø.

Each character H,M,S,D symbolizes a digit.

The maximum duration corresponds to 119304 hours, 38 minutes, 49 seconds and

5 tenths.

Ladder language

OPERATE

%MB2:15=TIME_TO_STRING(%MD40)

Examples

Instruction list language

LD TRUE

[%MB2:15=TIME_TO_STRING(%MD40)]

Structured text language

%MB2:15=TIME_TO_STRING(%MD40) ;

%MB2:15=TIME_TO_STRING(%MD40)

%MD40:= 27556330.3 (TIME format)

%MB 2 3 4 5 6 7 8 9 10 11 12 13

‘0’ ‘0’ ‘7’ ‘6’ ‘5’ ‘4’ ‘:’ ‘3’ ‘2’ ‘:’ ‘1’ ‘0’

14 15 16

‘.’ ‘3’ Ø

226

TLX DR PL7 xxE

Syntax

Advanced instructions

Duration to string conversion operator

Syntax

Result:= TIME_TO_STRING (Duration)

Duration to string conversion operands

Type

Tables of 15 bytes

Indexable double words

Non-indexable double words

Result (res)

%MB:15

Duration

%MD,%KD

%ID,%QD, Immediate value, Numeric expr.

Duration is in TIME format

Note: l If the output string is too short, it is truncated and the system bit %S15 is set to 1.

%MB2:8:=TIME_TO_STRING(%MD40)

==> %MB 2 3 4 5 6 7 8

‘0’ ‘0’ ‘7’ ‘6’ ‘5’ ‘4’ ‘:’

‘3’

==> %S15 = 1 l If the output string is too long, it is completed with end characters Ø.

%MB2:16:=TIME_TO_STRING(%MD40)

==>

%MB 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

‘0’ ‘0’ ‘7’ ‘6’ ‘5’ ‘4’ ‘:’ ‘3’ ‘2’ ‘:’ ‘1’ ‘0’ ‘.’ ‘3’ Ø Ø

TLX DR PL7 xxE

227

Advanced instructions

Conversion of a time of day to a character string

General

Structure

This instruction converts a time of day (in TOD – TIME_OF_DAY format) into a character string with 8 characters in HH:MM:SS format plus an end character Ø.

Each chracter H,M,S symbolizes a digit.

Ladder language

OPERATE

%MB2:9=TOD_TO_STRING(%MD40)

Examples

Instruction list language

LD TRUE

[%MB2:9=TOD_TO_STRING(%MD40)]

Structured text language

%MB2:9=TOD_TO_STRING(%MD40);

%MB2:9=TOD_TO_STRING(%MD40)

%MD40:= 23:12:27 (TOD format)

%MB 2 3 4 5 6 7 8 9 10

‘2’ ‘3’ ‘:’ ‘1’ ‘2’ ‘:’ ‘2’ ‘7’ Ø

228

TLX DR PL7 xxE

Syntax

Advanced instructions

Time of day to string conversion operator

Syntax

Result:=TOD_TO_STRING(Duration)

Time of day to string conversion operands

Type

9 byte tables

Indexable double words

Non-indexable double words

Result (res)

%MB:9

Time

%MD,%KD

%ID,%QD, Immediate value, Numeric expr.

Time is in TOD format

Note: l If the output string is too short, it is truncated and the system bit %S15 is set to 1.

%MB2:8 := TOD_TO_STRING (%MD40) (where %MD40 := 23:12:27)

==> %MB 2 3 4 5 6 7 8 9

‘2’ ‘3’ ‘:’ ‘1’ ‘2’ ‘:’ ‘2’ ‘7’

==> %S15 = 1 l If the output string is too long, it is completed with end characters Ø.

%MB2:10 := TOD_TO_STRING (%MD40) (where %MD40 := 23:12:27)

==>

%MB 2 3 4 5 6 7 8 9 10 11

‘2’ ‘3’ ‘:’ ‘1’ ‘2’ ‘:’ ‘2’ ‘7’ Ø Ø

TLX DR PL7 xxE

229

Advanced instructions

Conversion of a duration into HHHH:MM:SS

General

Structure

This instruction converts a duration (in TIME format) into hours-minutes-seconds:

HHHH:MM:SS. Threshold [0000:00:00 , 9999:59:59].

Ladder language

OPERATE

%MD100=TRANS_TIME(%MD2)

Examples

Instruction list language

LD TRUE

[%MD100=TRANS_TIME(%MD2)]

Structured text language

%MD100=TRANS_TIME(%MD2) ;

%MD100=TRANS_TIME(%MD2) where %MD2:= 36324873 tenths of a second

==> %MD2

31 16

2 3 9 7 values are expressed in hexadecimal

5 4

4 7

230

TLX DR PL7 xxE

Syntax

Advanced instructions

Duration to HHHH:MM:SS conversion operator

Syntax

Result:= TRANS_TIME (Duration)

Duration to HHHH:MM:SS conversion operator

Type

Indexable double words

Non-indexable double words

Result (res)

%MD

%QD

Duration

%MD,%KD

%ID,%QD, Immediate value, Numeric expr.

Result is in HMS format

Duration is in TIME format

Note: l The rounding off principle will be applied to the "duration" parameter (expressed in tenths of a second) to enable conversion (precise to the second).

l l sssssssss.0 à sssssssss.4 rounded off to sssssssss.0

l sssssssss.5 à sssssssss.9 rounded off to sssssssss.0 +1.0

The maximum converted duration may be up to 10000 hours. This means that if the duration value (TIME) in the parameter is equal or greater than

360000000, it cannot be converted. %S15 system bit is set to 1 and the result is equal to 0000:00:00.

TLX DR PL7 xxE

231

Advanced instructions

2.9 Bit table instructions

Introduction

Aim of this subsection

What's in this

Section?

This sub-section describes PL7 language bit table instructions

This Section contains the following Maps:

Topic

Copying a bit table into a bit table

Logic instructions on bit tables

Copying a bit table into a word table

Copy of a word table in a bits table

Page

232

TLX DR PL7 xxE

Copying a bit table into a bit table

General

Structure

This function copies a bit table bit by bit into another bit table.

Ladder language

OPERATE

%MD10:5=COPY_BIT(%M20:5)

Advanced instructions

Syntax

Instruction list language

LD TRUE

[%MD10:5=COPY_BIT(%M20:5)]

Structured text language

%MD10:5=COPY_BIT(%M20:5) ;

Bit table copy operator

Syntax

Result:= COPY_BIT (Tab)

Bit table copy operands

Type

Bit table

Result (res) Tab (table)

%M:L,%Q:L,%I:L %M:L,%Q:L,%I:L,%Xi:L

Note: l Tables can be of different sizes. In this case, the result table contains the result of the function executed for a length equivalent to the smallest of the tables, and l the rest of the table has not been modified.

Be careful of possible overlap between the input table and the result table.

TLX DR PL7 xxE

233

Advanced instructions

Logic instructions on bit tables

General

Structure l l l l

Associated functions are used to carry out a bit by bit logic operation between two bit tables, and arrange the result in another bit table.

AND_ARX : logic AND (bit by bit)

OR_ARX : logic OR (bit by bit)

XOR_ARX

NOT_ARX

: Exclusive OR (bit by bit)

: logic (bit by bit) complement of a table

Ladder language

OPERATE

%MD10:7=AND_ARX(%M20:7,%M30:7)

OPERATE

%MD50:10=NOT_ARX(%M60:10)

Instruction list language

LD TRUE

[%MD10:7=AND_ARX(%M20:7,%M30:7)]

LD TRUE

[%MD50:10=NOT_ARX(%M60:10)]

Structured text language

%MD10:7=AND_ARX(%M20:7,%M30:7) ;

%MD50:10=NOT_ARX(%M60:10) ;

234

TLX DR PL7 xxE

Syntax Logic instruction on bit table operators

Syntax

Result:= AND_ARX (Tab 1, Tab 2)

Result:= OR_ARX (Tab 1, Tab 2)

Result:= XOR_ARX (Tab 1, Tab 2)

Result:= NOT_ARX (Tab 1)

Logic instruction on bit tables operands

Type

Bit table

Result (res) Tab 1 and Tab 2 (table)

%M:L,%Q:L,%I:L %M:L,%Q:L,%I:L,%Xi:L

Advanced instructions

Possibility of overlap between the input table and the result table.

TLX DR PL7 xxE

235

Advanced instructions

Copying a bit table into a word table

General

Structure

This function copies the bits of a bit table or part of a bit table and copies them into a word (or double word) table.

In the bit table, the bits are taken starting from a certain position (brow) for a set number of bits (nbit).

l l

In the word (or double word) table, the copy is made from the position (wrow or drow) starting with the least significant bit of each word.

BIT_W : Copies a bit table into a word table.

BIT_D : Copies a bit table into a double word table.

Ladder language

OPERATE

%MD10:7=BIT_W(%M20:29,3,22,2)

OPERATE

%MD10:4=(%M20:29,3,22,1)

Instruction list language

LD TRUE

[%MD10:7=BIT_W(%M20:29,3,22,2)]

LD TRUE

[%MD10:4=(%M20:29,3,22,1)]

Structured text language

%MD10:7=BIT_W(%M20:29,3,22,2) ;

%MD10:4=(%M20:29,3,22,1);

236

TLX DR PL7 xxE

Example %MD10:7=BIT_W(%M20:29,3,22,2) ;

%M20:29 row 0 row 3 (brow) row 0

%MW10:7 bit 15 bit 0 row 2

Number of bits (nbit):

16 + 6

Advanced instructions

Syntax Bit table to word table copy operators

Syntax

Result:= BIT_W (Tab, brow, nbit, wrow)

Result:= D_BIT (Tab, brow, nbit, drow)

Bit table to word table copy operands

Type Result (res)

Word tables %MW:L

Double word tables %MD:L

Bit table -

Indexable words -

Non-indexable words -

Tab (table)

%M:L,%Q:L,%I:L,%

Xi:L

brow - nbit wrow or drow

%MW,%KW,%Xi.T

%IW,%QW,%SW,

%NW, Imm. value.,

Num. expr.

Note: l If the number of bits to be processed is greater than the number of bits remaining in the tables from position (brow), the function copies up to the last table element.

l l

If the number of bits to be copied is greater than the number of bits that make up the remaining words in the result table, the function stops copying at the last element of the word (or double word) table.

A negative value in the brow, nbit, wrow or drow parameters will be interpreted as zero.

TLX DR PL7 xxE

237

Advanced instructions

Copy of a word table in a bits table

General

Structure

The function takes the bits that make up a word table or part of a word (or double word) table and copies them into a bit table.

In the word (or double word) table, the deduction is made from position word (wrow or drow) for a number of words (nwd).

l l

In the bit table, the copy is made from the position (brow) starting with the least significant bit of each word.

W_BIT : Recopying a word table into a bit table.

D_BIT : Recopying a double word table into a bit table.

Language data

OPERATE

%M20:36:=W_BIT(%MW10:7,2,2,3)

OPERATE

%M20:36:=D_BIT(%MD10:4,1,1,3)

Instruction list language

LD TRUE

[%M20:36:=W_BIT(%MW10:7,2,2,3)]

LD TRUE

[%M20:36:=D_BIT(%MD10:4,1,1,3)]

Structured text language

%M20:36:=W_BIT(%MW10:7,2,2,3) ;

%M20:36:=D_BIT(%MD10:4,1,1,3) ;

238

TLX DR PL7 xxE

Example %M20:36:=W_BIT(%MW10:7,2,2,3) ;

%M20:36 row 0 row 3 (brow) row 0

(wrow) row 2

%MW10:7 bit 15 bit 0

Advanced instructions row 19

Syntax Operators for copying a word table into a bit table

Syntax

Result:= W_BIT (Tab, wrow, nwd, brow)

Result:= D_BIT (Tab, drow, nwd, brow)

Operands for copying a word table into a bit table

Type Result (res) Tab (table)

Bit tables

Word tables

Double word tables -

Words which can be indexed

Words which can not be indexed

%M:L,%Q:L,%I:L -

%MW:L,%KW:L

%MD:L,%KD:L

wrow or drow nwd brow

%MW,%KW,%Xi.T

%IW,%QW,%SW,%NW,I mm value.,Num. expr.

Note: l If the number of bits to be processed is greater than the number of bits remaining in the tables from position (wrow), the function recopies up to the last table element.

l If the number of bits to be recopied is greater than the number of bits that make up the remaining words in the result table, the function stops copying at the last word (or double word) table element.

l l

If the number of bits to be recopied is greater than the number of bits remaining in the result table, the function stops recopying at the last table element.

A negative value in the brow, nbit, wrow or drow parameters will be interpreted as zero.

TLX DR PL7 xxE

239

Advanced instructions

2.10 "Orpheus" functions: Shift registers, counter

Introduction

Aim of this subsection

What's in this

Section?

This sub-section describes the following "Orpheus" functions of PL7 language: shift register and counter

This Section contains the following Maps:

Topic

Shift register on words with shifted bit retrieval

Up/down counting with overshoot signaling

Rotate shifts

Page

241

244

247

240

TLX DR PL7 xxE

Advanced instructions

Shift register on words with shifted bit retrieval

General

Structure

The functions cause right or left arithmetic shifts on a number of shift registers (nbit) l l l l l l on a word or on a double word (a).

After shifting, the value is placed in (résu) and the shifted bits are placed in (rest).

WSHL_RBIT : Left shift on word with shifted bit retrieval.

DSHL_RBIT

WSHRZ_C

DSHRZ_C

: Left shift on double word with shifted bit retrieval.

: Right shift on word, filling with 0s and shifted bit retrieval.

: Right shift on double word, filling with 0s and shifted bit retrieval.

WSHR_RBIT

DSHR_RBIT

: Right shift on word with sign extension and shifted bit retrieval.

: Right shift on double word with sign extension and shifted bit retrieval.

Ladder language

OPERATE

WSHL_RBIT(%MW20,%MW30,%MW21,%MW10)

OPERATE

WSHRZ_C(%MW20,%MW30,%MW21,%MW10)

OPERATE

DSHR_RBIT(%MD30,%MW40,%MD20,%MD10)

Instruction list language

LD TRUE

[WSHL_RBIT(%MW20,%MW30,%MW21,%MW10)]

LD TRUE

[WSHRZ_C(%MW20,%MW30,%MW21,%MW10)]

LD TRUE

[DSHR_RBIT(%MD30,%MW40,%MD20,%MD10)]

Structured text language

TLX DR PL7 xxE

241

Advanced instructions

Examples

WSHL_RBIT(%MW20,%MW30,%MW21,%MW10) ;

WSHRZ_C(%MW20,%MW30,%MW21,%MW10) ;

DSHR_RBIT(%MD30,%MW40,%MD20,%MD10) ;

WSHL_RBIT(%MW20,%MW30,%MW21,%MW10) with %MW30 = 4 rest = %MW10

0000 0000 0000 0001

Copy shifted bits

A = %MW20

0001 1111 0110 1000 result = %MW21

1111 0110 1000 0000

Completing bits on each zero

WSHRZ_C(%MW20,%MW30,%MW21,%MW10) with %MW30 = 4 a = %MW20

1000 0000 1111 0001 0001 rest = %MW10

0000 0000 0000

Copy shifted bits result = %MW21

0000 1000 0000 1111

Completing bits on each zero

DSHR_RBIT(%MD30,%MW40,%MD20,%MD10) with %MW40 = 6 a = %MD30 rest = %MD10

1000 0000 1111 0001 0000 0000 0000 0000

0000 0000 11 00 1111 0000 0000 11 00 1111 Pf

Copy shifted bits retain sign result = %MD20

1 111 11 10 0000 0011

1100 0100 1111 0011 Pf spread sign bit in bits freed by shifting

242

TLX DR PL7 xxE

Syntax

TLX DR PL7 xxE

Advanced instructions

Shift register operators on words with shifted bit retrieval

Syntax

WSHL_BIT (a, nbit, résu, rest)

WSHRZ_C (a, nbit, résu, rest)

WSHR_RBIT (a, nbit, résu, rest)

Shift register operands on words with shifted bit retrieval

Type

Words which can be indexed a

%MW,%KW

Words which can not be indexed

%IW,%QW,%SW,

%NW, Imm.value,

Num.expression

nbit

%MW,%KW,%Xi.T

%IW,%QW,%SW,

%NW, Imm.value,

Num.expression

résu, rest

%MW

%QW,%SW,%NW

Shift register operators on double words with shifted bit retrieval

Syntax

DSHL_BIT (a, nbit, résu, rest)

DSHRZ_C (a, nbit, résu, rest)

DSHR_RBIT (a, nbit, résu, rest)

Shift register operands on double words with shifted bit retrieval

Type

Double words which can be indexed a

%MD,%KD

Double words which can not be indexed

Words which can be indexed

Words which can not be indexed

%ID,%QD,%SD,

Immediate value,

Num.expression

nbit

%IW,%QW,%SW,

%NW, Imm.value,

Num.expression

résu, rest

%MD

%QD,%SD

%MW,%KW,%Xi.T

Note: If the parameter (nbit) is not between 1 and 16 for word shifts, or between 1 and 32 for double word shifts, the outputs (résu) and (rest) are not significant and the %S18 system bit is set to 1.

243

Advanced instructions

Up/down counting with overshoot signaling

General

Structure

The function is used to up/down count with overshoot signaling. This function is only executed if the confirmation input (en) is set.

Two separate inputs (cu and cd) are used to up and down count the events. The output (Qmin) is set to 1 as soon as the minimum threshold (min) has been reached, the output (Qmax) is set to 1 as soon as the maximum threshold (max) is reached.

The initial count value is set by the parameter (pv) and the current count value is given by the parameter (cv).

A 16 bit word (mwd) is used to store the state of the cu and cd inputs (bit 0 for storing cu and bit 1 for storing cd).

Ladder language

OPERATE

SCOUNT(%M9,%MW10,%M11,%M12,%MW11,

%MW12,%M16,%M10,%MW15,%MW20)

Instruction list language

LD TRUE

[SCOUNT(%M9,%MW10,%M11,%M12,%MW11,%MW12,%M16,%M10,%MW15,%MW2

0)]

Structured text language

SCOUNT(%M9,%MW10,%M11,%M12,%MW11,%MW12,%M16,%M10,%MW15,%MW20

) ;

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Examples

Advanced instructions

SCOUNT(%M9,%MW10,%M11,%M12,%MW11,%MW12,%M16,%M10,%MW15,%MW20

) with %MW10 (pv) = 5, %MW11 (min) = 0, %MW12 (max) = 7 en:%M9 cd:%M12 mcd:%MW20:X1 cu:%M11 mcu:%MW20:X0

Qmax:%M10

Qmin:%M16 cv=%MW15 5 4 5 6 5 6 7 5

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Advanced instructions

Syntax Up/down counting operators with overshoot signaling

Syntax

SCOUNT (en, pv, cu, cd, min, max, Qmin, Qmax, cv, mwd)

Up/down counting operands with overshoot signaling

Type

Bits

Words which can be indexed

Words which can not be indexed

en, cu, cd

%I,%Q,%M,%S,

%BLK,%.:Xk

Qmin, Qmax

%I,%Q,%M

pv, min, max

cv,mwd

%MW,%KW,%Xi.T %MW

%IW,%QW,%SW,

%NW, Imm.value,

Num.expression

%QW,%SW,

%NW l l l

Note: l If (en) = 0 then the function is no longer enabled and on each call, there is:

Qmin = Qmax = 0 l mcu = mcd = 0 cv = pv

If max > min then: cv >= max ---> Qmax = 1 and Qmin = 0 l min < cv < max ---> Qmax = Qmin = 0 cv <= min ---> Qmax = 0 and Qmin = 1

If max < min then: max <= cv <= min ---> Qmax = 1 and Qmin = 0 cv < max ---> Qmax = 0 and Qmin = 1 cv > min ---> Qmax = 1 and Qmin = 0 l If max = min then: cv < min and max ---> Qmax = 0 and Qmin = 1 cv >= min and max ---> Qmax = 1 and Qmin = 0

There is no incidence of a modification of parameter (pv) with (en) in state 1

A negative value for parameters (pv) and (min) is interpreted as a zero value.

A value lower than 1 for the parameter (max) is interpreted as being equal to 1.

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Advanced instructions

Rotate shifts

General

Structure

The functions rotate the shifts left or right on a word or double word.

l l l l

ROLW

RORW

ROLD

RORD

: rotate shift left on a word with a number of calculated shift registers

: rotate shift right on a word with a number of calculated shift registers

: rotate shift left on a double word with a number of calculated shift registers

: rotate shift right on a double word with a number of calculated shift registers

Ladder language

%M0

%MW0:=ROLW(%MF10,%MW5)

%I3.2

%MD8:=RORD(%MD50,%MW5)

Instruction list language

LD %M0

[%MW0:=ROLW(%MW10,%MW5)]

LD %I3.2

[%MD10:=RORD(%MD100,%MW5)]

Structured text language

IF %M0 THEN

%MW0:=ROLW(%MW10,%MW5) ;

END_IF;

IF %I3.2 THEN

%MD8:=RORD(%MD100,%MW5) ;

END_IF

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Advanced instructions

Syntax Rotate shift operators

Operators

ROLW, RORW, ROLD, RORD

Syntax

Op1:=Operator(Op2,n)

Rotate shift operands on a word ROLW , RORW

Type

Words which can be indexed

Words which can not be indexed

Operand 1

(Op1)

%MW

Operand 2 (Op2)

%MW,%KW,%Xi.T

Imm.val.,%IW,%QW,%S

W,%NW,%BLK,

Num.expr.

Position number (n)

%MW,%KW,%Xi.T

Imm.val. %IW,%QW,

%SW,%NW,%BLK,

Num.expr.

Rotate shift operands on a double word ROLD , RORD

Operand 2 (Op2) Type

Words which can be indexed

Words which can not be indexed

Operand 1

(Op1)

%MD

%QD,%SD

%MD,%KD

Position number (n)

%MW,%KW,%Xi.T

Imm.val.,%ID,%QD,%SD

,Num.expr.

Imm.val. %IW,%QW,

%SW,%NW,%BLK,

Num.expr.

Note: The preferred basic instructions are ROL and ROR (when the shift register number is static, because these instructions have a higher performance.

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2.11 Timing functions

Introduction

Aim of this subsection

What's in this

Section?

This sub-section describes PL7 language timing functions

This Section contains the following Maps:

Topic

Timing functions

Engagement timing (on delay) function

Release timing (off delay) function

Pulse timer function

Rectangular signal generator function

Advanced instructions

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249

Advanced instructions

Timing functions

General As opposed to the predefined function blocks, these timing functions are not limited l l l l in number and can be used in the DFB function block code.

4 timing functions are available.

FTON : Engagement timing (on delay).

FTOF

FTP

: Release timing (off delay).

: Pulse timing: Timing

FPULSOR : rectangular signal: Timing

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Advanced instructions

Engagement timing (on delay) function

General

Structure

Syntax

This function is used to manage the delays on engagement. This delay is programmable

Ladder language

%I1.2

OPERATE

FTON(%I3.0,1000,%Q4.0,%MW2,%MD8)

Instruction list language

LD I1.2

[FTON(%I3.0,1000,%Q4.0,%MW2,%MD8)]

Structured text language

IF %I1.2 THEN

FTON(%I3.0,1000,%Q4.0,%MW2,%MD8) ;

END_IF;

FTON engagement timing function operators

Syntax

FTON (EN,PT,Q,ET,PRIV)

FTON engagement timing function operands

Type

Words which can be indexed

Words which can not be indexed

Double words which can be indexed

Bits

%I,%Q,%M,

%S,%BLK,

%*:Xk,%X

%MW,%KW,

%Xi.T

%IW,%QW,

%SW,%NW,

Immediate value,

Numeric expression

%I,%Q,%M

%S,%*:Xk,

%MW

PRIV

%IW,%QW -

%MD

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Advanced instructions

Characteristics FTON engagement timing function characteristics

Characteristic

Input "Activation"

Preset value

Output "Timer"

Current value

Calculation variable

Address Value

EN The timing starts on rising edge

PT Input word which determines the timing length (in one hundredths of a second). It is used to define a maximum duration of 5 min and 27 s to the nearest

10 ms. (1)

PRIV

Output set to 1 on time-out.

Output word which increases from 0 to PT on completion of the timer cycle.

Double word for internal latching. An application variable exclusively reserved for this is associated with this double word.

Note: (1) a modification of this word is taken into account during the timing.

Operation

Step

FTON engagement timing function operation description

Action

Rising edge on the EN input

The current value has reached

PT the EN input is clear

Description

The timer is started: its current value ET increases from 0 to PT

(hundredths of a second).

The output bit Q switches to 1, then stays at 1 whilst the input EN is at 1.

The timer is stopped even if it was still running:

ET takes a 0 value.

Illustration

(1) (2) (3) (1) (3) (1) (2)

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Advanced instructions

Release timing (off delay) function

General

Structure

This function is used to manage the release delays. This delay is programmable

Ladder language

%I1.2

OPERATE

FTOF(%I3.0,1000,%Q4.0,%MW2,%MD8)

Syntax

Instruction list language

LD I1.2

[FTOF(%I3.0,1000,%Q4.0,%MW2,%MD8)]

Structured text language

IF %I1.2 THEN

FTOF(%I3.0,1000,%Q4.0,%MW2,%MD8) ;

END_IF;

FTOF Release timing function operators

Syntax

FTOF (EN,PT,Q,ET,PRIV)

FTOF Release timing function operands: identical to FTON (See Engagement

timing (on delay) function, p. 251)

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Advanced instructions

Characteristics FTOF Release timing function characteristics

Characteristic

Input "Activation"

Preset value

Output "Timer"

Current value

Calculation variable

Address Value

EN The timing starts on falling edge

PT Input word which determines the timing length (in one hundredths of a second). It is used to define a maximum duration of 5 min and 27 s with a 10 ms precision. (1)

PRIV

Output set to 1 on rising edge of EN and set to 0 on time-out.

Output word which increases from 0 to PT on completion of the timer cycle.

Double word for internal latching. An application variable exclusively reserved for this is associated with this double word.

Note: (1) a modification of this word is taken into account during the timing.

Operation

Step

FTOF release timing function operation description

Action Description Illustration

Rising edge on the EN input

On falling edge of

EN input

When the current value has reached PT.

The current ET value takes a 0 value

(even if the timer is still running) and the output bit Q switches to 1 (or remains at

EN the timer is started, then the current value increases from 0 to PT

(hundredths of a second).

Output bit Q falls back to 0.

1 2 3 1 2 1 2 3

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Advanced instructions

Pulse timer function

General

Structure

This function is used to generate a pulse of precise duration. This duration can be programmed.

Ladder language

%I1.2

OPERATE

FTP(%I3.0,1000,%Q4.0,%MW2,%MD8)

Syntax

Instruction list language

LD I1.2

[FTP(%I3.0,1000,%Q4.0,%MW2,%MD8)]

Structured text language

IF %I1.2 THEN

FTP(%I3.0,1000,%Q4.0,%MW2,%MD8) ;

END_IF;

FTP pulse timer function operators

Syntax

FTP(EN,PT,Q,ET,PRIV)

FTP pulse timer function operands: identical to FTON (See Engagement timing (on

delay) function, p. 251)

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Advanced instructions

Characteristics FTP pulse timer function characteristics

Characteristic

Input "Activation"

Preset value

Output "Timer"

Current value

Calculation variable

Address Value

EN The timing starts on falling edge

PT Input word which determines the timing length (in one hundredths of a second). It is used to define a maximum duration of 5 min and 27 s with a 10 ms precision. (1)

PRIV

Output set to 1 on time-out.

Output word which increases from 0 to PT on completion of the timer cycle.

Double word for internal latching. An application variable exclusively reserved for this is associated with this double word.

Note: (1) a modification of this word is taken into account during the timing.

Operation

Step

FTP pulse timer function operating description

Action Description Illustration

Rising edge on the EN input

When the current value has reached PT.

The timer is started (if it is not already on) and the current ET value advances from 0 to PT (hundredths of a second).

Output bit Q switches to 1

Output bit Q falls back to 0.

The EN input and output Q are at 0

PT takes a 0 value.

1 2 3 1 3 1 2

This monostable cannot be reactivated.

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Advanced instructions

Rectangular signal generator function

General

Structure l l

This function is for generating a periodic rectangular signal, the set slot size and clear slot size of which can be varied by the program using 2 timers:

TON : rise timing (for the set slot).

TOFF : fall back timing (for the clear slot).

Ladder language

OPERATE

FPULSOR(%I3.0,500,200,%Q4.0,%MW2,%MD8)

Instruction list language

LD TRUE

[FPULSOR(%I3.0,500,200,%Q4.0,%MW2,%MD8)]

Structured text language

IF %I1.2 THEN

FPULSOR(%I3.0,500,200,%Q4.0,%MW2,%MD8) ;

END_IF;

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Advanced instructions

Syntax FPULSOR rectangular signal generator function operators

Syntax

FPULSOR (EN,TON,TOFF,Q,ET,PRIV)

FPULSOR rectangular signal generator function operands

Type EN

Words which can be indexed

Words which can not be indexed

Double words which can be indexed

Bits %BLK,%*:Xk,

TON,TOFF

%MW,%KW,

%Xi.T

%I,%Q,%M,

%MW

%IW,%QW

%S,%*:Xk,%X %I,%Q,%M

PRIV

%MD

Characteristics FPULSOR rectangular signal generator function characteristics

Characteristic

Input "Activation"

Preset value (slot set)

Preset value (slot clear)

Address Value

EN The rectangular signal generation starts on rising edge

TON

TOFF

The input word determining the period (in hundredths of a second) of the set slot period. It is used to set a maximum duration of 5 min and 27 s to the nearest

10 ms. (1)

The input word determining the period (in hundredths of a second) of the clear slot period. It is used to set a maximum duration of 5 min and 27 s to the nearest

10 ms. (1)

Rectangular signal output

Current value

Output slot clear on the TOFF period, set on the TON period.

Output word which increases from 0 to TON+TOFF on completion of the timer cycle.

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Characteristic

Calculation variable

Advanced instructions

Address Value

PRIV Double word for internal latching. An application variable exclusively reserved for this is associated with this double word.

Note: (1) a modification of these words is taken into account during timing. The

TOFF+TON sum has a maximum duration of 5 min and 27 s.

Operation

Step

FPULSOR rectangular signal generator function operating description:

Action

Rising edge on the EN input

Description Illustration

The rectangular signal is generated:

(if the signal is not already on) its current ET value increases from 0 to

TON+TOFF (hundredths of a second).

As long as the

TOFF timing has not elapsed

Output bit Q remains at 0.

TOFF is complete, TON is engaged

Output bit Q switches to 1 until the end of TON and the generator loops back on (2) and (3)

EN switches to 0 TON and TOFF are reset to 0, output bit Q switches to 0

TON+TOFF

TOFF

TON

TOFF

TON

TOFF

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Advanced instructions

2.12 Data storage functions

Introduction

Aim of this subsection

What's in this

Section?

This sub-section describes PL7 language data storage functions

This Section contains the following Maps:

Topic

Data Archiving Functions

Initializing the Extended Archiving Zone

Archiving Zone Initialization

Writing Data to the Extended Archiving Zone

Writing Data to the Archiving Zone

Reading Data to the Extended Archiving Zone

Reading Data to the Archiving Zone

Page

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Advanced instructions

Data Archiving Functions

At a Glance

Example of

Application

Different

Functions

These functions allow the archiving of data by program in a dedicated zone for user memory cards. l l automatic storage of application data (status report log, history etc.) in the user memory card located in the memory slot in the PLC processor.

saving of production acceptance tests in the same memory card.

6 functions allow data to be archived and restored.

The following functions are applied to any of the type 1 PCMCIA memory cards

(memory cards located in slot 0 of the processor) and the type 3 cards (memory l l cards located in slot 1 of the processor). l SET_PCM_EXT : to initialize at a value all or part of the memory card's archiving zone,

WRITE_PCM_EXT to write data into the archiving zone in the memory card,

READ_PCM_EXT : to read data in the memory card's archiving zone.

Note: These functions require: l l

PL7 V4.2 or above, a PLC operating system version (SV), which is equal or above 5.2.

The following functions only apply to the type 1 PCMCIA memory card (memory l l cards located in slot 0 of the processor). l SET_PCMCIA : to initialize at a value all or part of the memory card's archiving zone,

WRITE_PCMCIA

READ_PCMCIA

to write data into the archiving zone in the memory card,

: to read data in the memory card's archiving zone.

Note: access to data stored in the archiving zone of a memory card is only possible from the application in the PLC for these 6 base functions. A remote station

CANNOT be accessed directly through a network or communication bus.

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Advanced instructions

Initializing the Extended Archiving Zone

At a Glance

Example

The SET_PCM_EXT function allows the initialization at the desired value of all or part of the memory card's archiving zone.

This function uses 5 parameters: l l l l l

SLOT : number of the path where the PCMCIA memory card is inserted: l 0 for a card located in slot 0 of the CPU (type 1 PCMCIA card), l 1 for a card located in slot 1 of the CPU (type 3 PCMCIA card).

DEST : address of the archiving zone, from which the Initialization will be performed

NUM : number of words to be initialized

VAL : Initialization value

CR : code giving the result from executing the Initialization command

Illustration of the user memory card:

100

1500

SET_PCM_EXT

100 l l l l

In this example:

SLOT = %MD1, where %MD1 contains the value of 1

DEST

NUM

VAL

= %MD2, where %MD2 contains the value of 1500

= %MW5, where %MW5 contains the value 30

= %MD10, where %MD10 contains the value 100

1529

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Structure

Syntax

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Advanced instructions

Ladder language :

%I1.3

P SET_PCM_EXT(%MW1,%MD2,%MW5,%MW10,%MW0)

Instruction list language

LDR %I1.3

[SET_PCM_EXT(%MW1,%MD2,%MW5,%MW10,%MW0)]

Structured text language :

IF RE %I1.3 THEN

SET_PCM_EXT(%MW1,%MD2,%MW5,%MW10,%MW0) ;

END_IF;

Function syntax:

SET_PCM_EXT (SLOT,DEST,NUM,VAL,CR)

Parameters:

Type

Indexable words

SLOT

%MW,

Val.imm.

Non-indexable words -

DEST

NUM

%MW,

Val.imm.

VAL

%MW,

Val.imm.

%MW

%QW,%SW,

%NW

Indexable double words

Non-indexable double words

%MW,Val.imm.

%QD,%SD -

Coding of the status parameter, returned after the initialization command:

Meaning Value

(hexadecimal)

0000

0201

0202

0204

0241

0242 initialization performed correctly no file zone in the memory card memory card fault memory card write-protected

DEST < 0

DEST + NUM - 1 -> highest address in the card

263

Advanced instructions

Value

(hexadecimal)

0401

0402

0501

Meaning

NUM = 0 or negative incorrect slot number (different from 0 or 1)

Functionality not supported

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Advanced instructions

Archiving Zone Initialization

At a Glance

Example

The SET_PCMCIA function allows the initialization at the desired value all or part of the user memory card (type 1 PCMCIA) archiving zone.

This function uses 4 parameters: l l l l

DEST : address of the archiving zone, from which the Initialization will be performed

NUM : number of words to be initialized

VAL : Initialization value

CR : code giving the result from executing the Initialization command

Illustration of the user memory card:

100

1500

SET_PCMCIA

100 l l l

In this example:

DEST = %MD0, where %MD0 contains the value 1500

NUM

VAL

= %MW5, where %MW5 contains the value 30

= %MD10, where %MD10 contains the value 100

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265

Advanced instructions

Structure Ladder language :

%I1.3

P SET_PCMCIA(%MD0,%MW5,%MW10,%MW2)

Instruction list language

LDR %I1.3

[SET_PCMCIA(%MD0,%MW5,%MW10,%MW2)]

Syntax

Structured text language :

IF RE %I1.3 THEN

SET_PCMCIA(%MD0,%MW5,%MW10,%MW2) ;

END_IF;

Function syntax:

SET_PCMCIA (DEST,NUM,VAL,CR)

Parameters:

Type

Indexable words

DEST

Non-indexable words -

%MW,Val.imm.

NUM VAL CR

%MW,Val.imm.

%MW

%QW,%SW,

%NW

Indexable double words

Non-indexable double words

%QD,%SD -

Coding of the CR parameter, returned after the initialization command:

Meaning Value

(hexadecimal)

0000

0201

0202

0204

0241

0242

0401 initialization performed correctly no file zone in the memory card memory card fault memory card write-protected

DEST negative

EST + NUM - 1 -> highest address in the memory card

NUM = 0 or negative

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Advanced instructions

Writing Data to the Extended Archiving Zone

At a Glance

Example l l l

The WRITE_PCM_EXT function allows the transfer of PLC RAM memory data

(%MW words) into the user memory card archiving zone.

This function uses 5 parameters: l SLOT : number of the path where the PCMCIA memory card is inserted: l 0 for a card located in slot 0 of the CPU (type 1 PCMCIA card), l 1 for a card located in slot 1 of the CPU (type 3 PCMCIA card).

DEST : address of the archiving zone, from which the data will be stored

NUM

EMIS

: number of words to be stored

: word containing the starting address of the zone to be transferred to the l memory card

CR : code giving the result of the write command.

Illustration:

PLC RAM memory User Memory Card

%MW40

1500

%MW69

WRITE_PCM_EXT

1529 l l l l

In this example:

SLOT = %MD1, where %MD1 contains the value 1

DEST

NUM

EMIS

= %MD2, where %MD2 contains the value 1500

= %MW5, where %MW5 contains the value 30

= %MD20, where %MD20 contains the value 40

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Advanced instructions

Structure Ladder language :

%I1.3

P WRITE_PCM_EXT(%MW1,%MD2,%MW5,%MW20,%MW0)

Instruction list language :

LDR %I1.3

[WRITE_PCM_EXT(%MW1,%MD2,%MW5,%MW20,%MW0)]

Structured text language :

IF RE %I1.3 THEN

WRITE_PCM_EXT(%MW1,%MD2,%MW5,%MW20,%MW0) ;

END_IF;

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Syntax

Advanced instructions

Function syntax:

WRITE_PCM_EXT (SLOT,DEST,NUM,VAL,CR)

Parameters:

Type

Indexable words

SLOT

%MW,

Val.imm.

Non-indexable words -

DEST

NUM

%MW,

Val.imm.

EMIS

%MW,

Val.imm.

%MW

%QW,%SW,

%NW

Indexable double words

Non-indexable double words

%MW,Val.imm.

%QD,%SD -

Coding of the status parameter, returned after the write command:

Meaning

0241

0242

0401

0402

0501

Value

(hexadecimal)

0000

0102

0104

0201

0202

0204

Write performed correctly

EMIS + NUM - 1 -> maximum number of %MW declared in the PLC no valid application or no %MW in the PLC no file zone in the memory card memory card fault memory card write-protected

DEST < 0

DEST + NUM - 1 -> highest address in the memory card

NUM = 0 incorrect slot number (different from 0 or 1)

Functionality not supported

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Advanced instructions

Writing Data to the Archiving Zone

At a Glance

Example

The WRITE_PCMCIA function allows the transfer of PLC RAM memory data (%MW l l l words) to the user memory card archiving zone (type 1 PCMCIA).

This function uses 4 parameters:

DEST : address of the archiving zone, from which the data will be stored

NUM

EMIS

: number of words to be stored

: word containing the starting address of the zone to be transferred to the memory card l CR : code giving the result of the write command.

Illustration:

PLC RAM memory User Memory Card

%MW40

1500

%MW69

WRITE_PCMCIA

1529

In this example: l l l

DEST

NUM

EMIS

= %MD0, where %MD0 contains the value 1500

= %MW5, where %MW5 contains the value 30

= %MD20, where %MD20 contains the value 40

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Advanced instructions

Structure Ladder language :

%I1.3

P WRITE_PCMCIA(%MD0,%MW5,%MW20,%MW2)

Instruction list language :

LDR %I1.3

[WRITE_PCMCIA(%MD0,%MW5,%MW20,%MW2)]

Structured text language :

IF RE %I1.3 THEN

WRITE_PCMCIA(%MD0,%MW5,%MW20,%MW2) ;

END_IF;

Syntax Function syntax:

WRITE_PCMCIA (DEST,NUM,EMIS,CR)

Type

Indexable words

Non-indexable words

Parameters:

DEST

NUM

%MW,Val.imm.

EMIS

%MW,Val.imm.

Indexable double words

Non-indexable double words

%MW,Val.imm.

%QD,%SD

Coding of the CR parameter, returned after the write command:

Meaning Value

(hexadecimal)

0000

0102

0104

0201

0202

0204

0241

0242

0401

Write performed correctly

EMIS + NUM - 1 -> maximum number of %MW declared in the PLC no valid application or no %MW in the PLC no file zone in the memory card memory card fault memory card write-protected

DEST < 0

DEST + NUM - 1 -> highest address in the memory card

NUM = 0

%MW

%QW,%SW,%N

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Advanced instructions

Reading Data to the Extended Archiving Zone

At a Glance

Example l l l

The READ_PCM_EXT function allows the transfer of data from the archiving zone of the user memory card to the PLC RAM memory (%MW words).

SRC : address of the archiving zone, in which the data to be read is stored

NUM : number of words to be read

RCPT : word containing the starting address of the zone transferred by the l memory card

CR : code giving the result from executing the read command

Illustration:

PLC RAM memory User Memory Card

%MW40

1500

%MW69

READ_PCM_EXT

1529 l l l l

In this example:

SLOT = %MD1, where %MD1 contains the value 1

SRC

NUM

= %MD2, where %MD2 contains the value 1500

= %MW5, where %MW5 contains the value 30

RCPT = %MD20, where %MD20 contains the value 40

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Structure

Syntax

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Advanced instructions

Ladder language :

%I1.4

P READ_PCM_EXT(%MW1,%MD2,%MW5,%MW20,%MW0)

Instruction list language :

LDR %I1.4

[READ_PCM_EXT(%MW1,%MD2,%MW5,%MW20,%MW0)]

Structured text language :

IF RE %I1.4 THEN

READ_PCM_EXT(%MW1,%MD2,%MW5,%MW20,%MW0) ;

END_IF;

Function syntax:

READ_PCM_EXT (SLOT,SRC,NUM,RCPT,CR)

Parameters:

Type

Indexable words

SLOT

%MW,

Val.imm.

Non-indexable words -

SRC

NUM

%MW,

Val.imm.

RCPT

%MW,

Val.imm.

%MW

%QW,%SW,

%NW

Indexable double words

Non-indexable double words

%MW,Val.imm.

%QD,%SD -

Coding of the CR parameter, returned after the write command:

Meaning Value

(hexadecimal)

0000

0102

0104

0201

0202

0204 read performed correctly

SRC + NUM -1 -> maximum number of %MW declared in the PLC no valid application or no %MW in the PLC no file zone in the memory card memory card fault memory card write-protected

273

Advanced instructions

Value

(hexadecimal)

0241

0242

0401

0402

0501

Meaning

SRC < 0

SRC + NUM -1 -> highest address in the memory card

NUM = 0 incorrect slot number (different from 0 or 1)

Functionality not supported

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Reading Data to the Archiving Zone

At a Glance

Example

The READ_PCMCIA function allows the transfer of user memory card (type 1 l l l

PCMCIA) archiving zone data to the PLC RAM memory (%MW words).

This function uses 4 parameters:

SRC : address of the archiving zone, in which the data to be read is stored

NUM : number of words to be read

RCPT : word containing the starting address of the zone transferred by the memory card l CR : code giving the result from executing the read command

Illustration:

PLC RAM memory User Memory Card

%MW40

1500

%MW69

READ_PCMCIA

1529

In this example: l l l

SRC

NUM

= %MD0, where %MD0 contains the value of 1500

= %MW5, where %MW5 contains the value 30

RCPT = %MD20, where %MD20 contains the value 40

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Advanced instructions

Structure Ladder language :

%I1.4

P READ_PCMCIA(%MD0,%MW5,%MW20,%MW2)

Syntax

276

Instruction list language :

LDR %I1.4

[READ_PCMCIA(%MD0,%MW5,%MW20,%MW2)]

Structured text language :

IF RE %I1.4 THEN

READ_PCMCIA(%MD0,%MW5,%MW20,%MW2) ;

END_IF;

Function syntax:

READ_PCMCIA (SRC,NUM,RCPT,CR)

Parameters:

Type

Indexable words

SRC

Non-indexable words -

%MW,Val.imm.

NUM RCPT CR

%MW,Val.imm.

%MW

%QW,%SW,

%NW

Indexable double words

Non-indexable double words

%QD,%SD -

Coding of the CR parameter, returned after the write command:

Meaning Value

(hexadecimal)

0000

0102

0104

0201

0202

0204

0241 read performed correctly

RCPT + NUM - 1 -> maximum number of %MW declared in the PLC no valid application or no %MW in the PLC no file zone in the memory card memory card fault memory card write-protected

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Value

(hexadecimal)

0242

0401

Advanced instructions

Meaning

RCPT + NUM - 1 -> highest address in the memory card

NUM = 0

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Advanced instructions

2.13 Grafcet functions

Step activity time reset to zero function

General This function resets all sequential "Chart" processing or macro step activity times.

This function is enabled on the Premium/Atrium PLC (software version 3.0V or above).

It has the following input and output parameters:

Type

Input

Output

Parameters Role

In Function enabling condition

Num

Result

Grafcet module number to be reset.

This is equal to: l l

-1 if the module is "Chart" sequential processing, or the macro step number concerned.

Report on the execution of the function.

Structure Ladder language

%MW0:=RESET_XIT(%M1,-1)

Instruction list language

LD True

[%MW0:=RESET_XIT(%M1,-1)]

Structured text language

%MW0:=RESET_XIT(%M1,-1) ;

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Result

Advanced instructions

Operator:

Syntax

Result:=RESET_XIT (In,Num)

Operands:

Type Result

Bits

Words

%MW

Confirmation condition

(In)

Grafcet module number

(Num)

%MW, %KW,

Immediate value

Encoding of the returned result parameter after execution of the instruction:

Meaning Value (in hexadecimal)

0000

FFFF

FFFA

Correct operation

Input parameter outside limits: the macro step does not exist in the application.

The PLC-type is a MICRO

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Introduction

Aim of this section

What's in this

Chapter?

This section describes all the PL7 language system bits and system words

This Chapter contains the following Sections:

Section

3.1

3.2

Topic

System Bits

System words

Page

282

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3.1 System Bits

Introduction

Aim of this subsection

What's in this

Section?

This chapter describes the PL7 language system bits.

This Section contains the following Maps:

Topic

System bit introduction

Description of system bits %S0 to %S7

Description of System Bits %S8 to %S16

Description of system bits %S17 to %S20

Description of system bits %S21 to %S26

Description of system bits %S30 to %S59

Description of system bits %S60 to %S69

Description of System Bits %S70 to %S92

Description of system bits %S94 to %S99

Description of system bits %S100 to %S119

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System bit introduction

General The TSX 37 and TSX 57 PLCs use %Si system bits which indicate the state of the

PLC, or they can be used to operate its functioning.

This bits can be tested in the user program to detect any function event before starting a set processing procedure. Some bits must be reset to their initial or usual state by program. However, the system bits, which are reset to their initial or usual state by the system, must not be done so by program or by the terminal.

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Description of system bits %S0 to %S7

In-depth description

Bit Function

Description of system bits %S0 to %S7

%S0

%S1

%S4

Cold start

Warm restart

Time base

10 ms

Description

Normally on 0, this bit is set on 1 by: l l l l l loss of data on power restart (battery fault), the user program, the terminal, cartridge uploading, pressing on the RESET button.

This bit goes to 1 during the first complete cycle. It is reset to 0 before the following cycle.

(Operation (("Operating Modes" - Reference Manual

Volume 1)))

Normally on 0, this bit is set on 1 by: l l l power restart with data save, the user program, the terminal.

It is reset to 0 by the system at the end of the first complete cycle and before output is updated.

(Operation (("Operating Modes" - Reference Manual

Volume 1)))

An internal timer regulates the change in status of this bit.

It is asynchronous in relation to the PLC cycle.

Graph :

Initial state

TSX37 TSX57

YES

%S5

%S6

%S7

5ms 5ms

Time base

100 ms

Idem %S4

Time base 1 s Idem %S4

Time base

1 mn

Idem %S4

YES

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Description of System Bits %S8 to %S16

Detailed

Description

Bit

%S8

%S9

%S10

%S11

%S13

%S15

Description of System Bits %S8 to %S16

Function Description

Wiring test Normally set to 1, this bit is used to test the wiring when the TSX 37 is in "non-configured" state.

l l at 1: the outputs are forced to 0, at 0: the outputs can be modified from a configuration terminal.

Setting outputs to 0

Normally at 0, can be set to 1 by the output program or from the terminal: l at 1: all discrete and analog outputs are set to 0, whatever the fallback mode configured for each module, l at 0: the outputs are updated normally.

Outputs on all buses to fallback

I/O fault

Normally at 0, can be set to 1 by the program or from the terminal: l at 1: all Discrete and Analog outputs set to fallback position (0 or 1) depending on the choice made in the l configuration, at 0: the outputs are updated normally.

Normally at 1. Is set to 0 when an I/O fault is detected on an in-rack module or a remote module (FIPIO) (noncompliant configuration, exchange fault, hardware fault).

The bit %S10 is reset to 1 when the fault disappears.

Watchdog overflow

First cycle after switching to

RUN

Normally at 0, is set to 1 by the system during the first cycle after the PLC switches to RUN.

Character string fault

Normally at 0, is set to 1 by the system when the execution time of a task exceeds the maximum execution time

(watchdog) declared in the configuration. A watchdog overflow causes the PLC to switch to STOP and the application stops in error state (ERR LED flashing).

Normally set to 0, is set to 1 when the destination zone for a character string transfer is not of sufficient size to receive this character string. This bit must then be reset to

0 by the user. Each task manages its own %S15 bit.

Initial state

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System objects

Bit

%S16

Function

I/O task fault

Description

Normally at 1, is set to 0 by the system when a fault occurs on an I/O module that is located in-rack or remotely on a

FIPIO network and that has been configured in the task.

This bit must be reset to 1 by the user. Each task manages its own %S16 bit.

Initial state

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Description of system bits %S17 to %S20

In-depth description

Bit

%S17

%S18

%S19

Description of system bits %S17 to %S20

Function Description

Bit outputted on shifting or a arithmetic report.

Normally on 0, this bit is set on 1 by the system: l during a shift operation containing the state of the last bit, l overshooting in unsigned arithmetic (dates).

This bit must be reset on 0 by the user.

Overrun or arithmetic error

Normally on 0, it is set on 1 should a capacity overload l l l l l occur during an operation on 16 bits, either through: l a result above +32767 or less than –32768 in single length, l a result above +2,147,483,647 or less than -

2.147.483.648 in double length, l a result above +3.402824E+38 or less than –

3.402824E+38, in floating point (software version >

1.0), capacity overload in DCB, dividing by 0, the root of a negative number, forcing a non-existent step onto a drum.

stacking up an already full register, emptying an already empty register.

It must be tested by the user program after each operation where there could be an overload risk, then reset to 0 by the user if there is indeed an overload. Each task generates its own %S18 bit.

Task period overrun

(periodical scanning)

Normally on 0, this bit is set on 1 by the system in the event of a time period overrun (ie. task execution time is greater than the period defined by the user in the configuration or programmed into the %SW word associated with the task).

The user must reset this bit to 0.

Each task manages its own %S19 bit.

Initial state

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System objects

Bit

%S20

Function Description

Index overflow Normally on 0, it is set on 1 when the address of the indexed object becomes less than 0 or exceeds the number of objects declared in the configuration.

It must be tested by the user program after each operation where there could be an overload risk, then reset to 0 if there is indeed an overload. Each task generates its own

%S20 bit.

Initial state

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System objects

Description of system bits %S21 to %S26

In-depth description

Bit

%S21

%S22

%S23

%S24

%S26

%21 to %S26 system bits associated with Grafcet

Function Description

Initialization

Setting Gracfet to 0

Normally on 0, this bit can be set on 1 by the program only during preliminary processing.

On 1, it disables all Grafcet steps. It is reset to 0 by the system after all has been taken into account at the end of the preliminary processing.

Freezing

Grafcet

This bit is managed by the user to initialize Grafcet

(preferably set on 1 for preliminary processing). It is repositioned to 0 by the system after Grafcet has been initialized (ie. after preliminary processing during evaluation of the new Grafcet state). Initializing Grafcet involves disabling all active steps and enabling the initial steps. On a cold start, this bit is set on 1 by the system during preliminary processing.

Setting macrosteps to 0

Normally on 0, setting %S23 onto 1 preserves Grafcet in the state is it at the time. Whatever the value of downstream transition conditions, Grafet does not change.

The freeze is maintained as long as the %S23 bit is on 1.

The bit is managed by the user program, and is positioned on 1 or 0 only during preliminary processing.

Normally on 0, setting %S24 to 1 will zero the macro-steps chosen in a 4 word table %SW22 to %SW25 system. It is reset to 0 by the system after all has been taken into account at the end of the preliminary processing.

Table overrun

(steps/ transitions)

Normally on 0, this bit is set on 1 by the table system when the enabling possibilities (steps or transitions) have been overrun or when an invalid chart has been executed (eg sending a destination to a step which does not belong to a chart). An overrun causes the PLC to go to STOP.

The user must reset this bit to 0 on initializing the terminal.

Initial state

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System objects

Description of system bits %S30 to %S59

In-depth description

Bit

%S30

%S31

%S38

%S39

%S4 0 to

%S47

%S49

%S50

%S51

Description of system bits %S30 to %S59

Function Description

Activating/ deactivating the master task

Normally on 1, the user setting the bit to 0 disables the master task.

Fast task activation

Enabling/ inhibiting events

Normally on 1, the user setting the bit to 0 disables the fast task.

Normally on 1, the user setting the bit to 0 causes events to be inhibited.

Saturation of event processing

I/O tripped static (racks) fault

This bit is set on 1 by the system to indicate that one or several events cannot be processed following saturation of the queues.

The user must reset this bit to 0.

Bits %S40 to %S47 are assigned to rack 0 to 7 respectively. Normally on 1, each bit is set on 0 following a corresponding rack input/output fault.

The bit is reset on 1 when the fault disappears.

Reactivating outputs

Updating time and date via words %SW50 to 53

Normally on 0, this bit can be set on 1 or 0 by the program or the terminal.

l on 0: accesses date and time by reading words via system words %SW50 to 53, l on 1: updates date and time by writing system words

%SW50 to 53.

Time loss in real time clock

Normally on 0, this bit can be set on 1 by the user for a request to reactivate all IOs, after the appearance of a static outputs fault triggered by an overcurrent or a shortcircuit.

This system-managed bit on 1 indicates that the real-time clock is absent or that its system words are meaningless.

In this case the clock must be reset to the correct time.

Initial state

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Bit

%S59

System objects

Function

Updating time and date via word %SW59

Description

Normally on 0, this bit can be set on 1 or 0 by the program date or the terminal.

l on 0: the system does not manage the system word

%SW59, l on 1: the system manages edges on the words

%SW59 to adjust the date and current time (by increment).

Initial state

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System objects

Description of system bits %S60 to %S69

In-depth description

Bit

%S60

%S66

%S67

%S68

%S69

Description of system bits %S60 to %S69

Function Description

Voluntary switching command system bit which controls voluntary switching on implementation of a back-up architecture (see usage in the "Warm Standby Premium"). This bit can be reset on 0 either by the user or by the application.

Managing LED battery

Normally on 0, this bit can be set on 1 or 0 by the program or the terminal. It is used to activate/deactivate the LED battery , in the event of the absence of or an error in the backup stack.

l state 0: the LED battery is lit when the backup stack is absent or contains a fault, l state 1: the LED battery is always off.

On a cold start, %S66 is reset to 0 by the system.

State of cartridge cell

State of processor stack

Display of user data on PLC display panels

This bit is used to control the functioning of the RAM cartridge memory backup cell : l l at 0: cell present and operational at 1: cell absent or non-operational

This bit is used to control the functioning of the backup cell for data and programming in RAM memory.

l l at 0: cell present and operational at 1: cell absent or non-operational

Normally on 0, this bit can be set on 1 or 0 by the program or the terminal.

l l at 0: "Word" mode deactivated on displays, at 1: "Word" mode activated on displays.

Initial state

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Description of System Bits %S70 to %S92

Detailed

Description

Bit

%S70

%S73

%S74

%S75

%S80

%S90

%S92

Description of System Bits %S70 to %S92

Function Description

Data update on

AS-i bus or

TSX Nano connection

This bit is set to 1 by the system at the end of each TSX

Nano connection cycle or AS-i bus scanning cycle. When powered up, it indicates that all the data has been updated at least once and that they are therefore significant. This bit is reset to 0 by the user.

Change to protected mode on AS-i bus

Save current configuration on AS-i bus

Normally at 0, this bit is set to 1 by the user to change to protected mode on the AS-i bus. Bit %S74 must first be at

1. This bit will only be used in wiring tests, with no application in the PLC.

Normally at 0, this bit is set to 1 by the user to save the current configuration on the AS-i bus. This bit will only be used in wiring tests, with no application in the PLC.

Data Archiving memory card battery test

Normally at 1 (battery OK), this bit is set to 0 when the battery is low or faulty.

Reset message counter

Normally at 0, this bit can be set to 1 by the user to reset to 0 the message counters %SW80 to %SW86.

Update common words

Updated every second. This bit can be set to 0 by the program or by the terminal.

Change to communication function measurement mode

Normally at 0, this bit can be set to 1 by the user to put the communication functions in performance measurement mode. The communication functions timeout parameter then displays the return exchange time in tens of ms (if this time <10s, otherwise not significant).

Initial state

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System objects

Description of system bits %S94 to %S99

In-depth description

Bit

%S94

%S95

%S96

%S97

%S98

%S99

Description of system bits %S94 to %S99

Function Description

Saving DFB adjustments

Normally on 0, this bit can be set on 1 by the user to save the adjustment values of user function blocks.

Restoring DFB adjustments

Validity of application program saves

Validity of

%MW saves

Normally on 0, this bit can be set on 1 by the user to restore the adjustment values of user function blocks.

l l on 0: application program saves are invalid, on 1: application program saves are valid,

This bit can be read at any time ( either by the program or while adjusting), in particular after a cold start or a warm restart.

It is significant with regard to a PL7-effected Backup application within the internal Flash EPROM.

l l on 0: %MW saves are invalid, on 1: %MW saves are valid,

This bit can be read at any time ( either by the program or while adjusting), in particular after a cold start or a warm restart.

Deport of TSX

SAZ 10 module button

Normally on 0, this bit is managed by the user: l l on 0: TSX SAZ 10 module button is enabled, on 1: TSX SAZ 10 button is replaced by a Discrete input (Word %SW98 (See Description of system words

%SW98 to %SW109, p. 312 )).

Deport of display block button

Normally on 0, this bit is managed by the user: l l on 0: centralized display block button is enabled, on 1: centralized display block button is replaced by a

Discrete input (Word %SW99 (See Description of

system words %SW98 to %SW109, p. 312 )).

Initial state

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Description of system bits %S100 to %S119

In-depth description

Bit

%S100

%S101

%S102

%S118

%S119

Description of system bits %S100 to %S119

Function Description

Protocol on terminal port

This bit is set on 0 or 1 by the system according to the state of the INL/DPT shunt on the console.

l if the shunt is absent (%S100=0), then the master

UNITELWAY protocol is used, l if the shunt is present (%S100=1) then the protocol used is the one indicated by the application configuration.

Configured diagnostics buffer

This bit is set on 1 by the system when the diagnostics option has been configured – a diagnostics buffer aimed at storing errors found by DFB diagnostics is then reserved.

This bit is set on 1 by the system when the buffer that receives DFB errors is full.

Full diagnostics buffer

General FIPIO

I/O fault

Normally on 1, this bit is set to 0 by the system when a fault appears on a device connected to the FIPIO bus.

This bit is reset to 1 by the system when the fault disappears.

General I/O on rack fault

Normally on 1, this bit is set to 0 by the system when a fault appears on an I/O module placed in one of the racks.

This bit is reset to 1 by the system when the fault disappears.

Initial state

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System objects

3.2 System words

Introduction

Aim of this subsection

What's in this

Section?

This sub-section describes the PL7 language system words.

This Section contains the following Maps:

Topic

Description of system words %SW0 to %SW11

Description of system words %SW12 to %SW18

Description of system words %SW20 to %SW25

Description of system words %SW30 to %SW35

Description of system words %SW48 to %SW59

Description of system words %SW60 to %SW62

Description of system words %SW63 to %SW65

Description of system words %SW66 to %SW69

Description of system words %SW80 to %SW89

Description of system words %SW96 to %SW97

Description of system words %SW98 to %SW109

Description of system word %SW116

Description of system words %SW124 to %SW127

Description of system words %SW128 to %SW143

Description of system words %SW144 to %SW146

Description of system words %SW147 to %SW152

Description of system word %SW153

Description of system word %SW154

Description of system words %SW155 to %SW162

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Description of system words %SW0 to %SW11

In-depth description

Words

%SW0

%SW1

%SW8

%SW9

%SW10

%SW11

Description of system words %SW0 to %SW11

Function

Master task scanning period

Fast task scanning period

Acquisition of task input monitoring

Description

The user program or the terminal modify the duration of the master task defined in configuration. The duration is expressed in ms (1.255 ms) %SW0=0 in cyclic operation.

On a cold restart: it takes on the value defined by the configuration.

The user program or the terminal modify the duration of the fast task as defined in configuration.

The duration is expressed in ms (1.255 ms)

On a cold restart: it takes on the value defined by the configuration.

Normally on 0, this bit can be set on 1 or 0 by the program or the terminal.

It inhibits the input acquisition phase of each task.

l %SW8:X0 =1 assigned to MAST task: outputs linked to this task are no longer guided.

l %SW8:X1 =1 assigned to FAST task: outputs linked to this task are no longer guided.

Monitoring of task output update

Normally on 0, this bit can be set on 1 or 0 by the program or the terminal.

Inhibits the output updating phase of each task.

l %SW9:X0 =1 assigned to MAST task: outputs linked to this task are no longer guided.

l %SW9:X1 =1 assigned to FAST task: outputs linked to this task are no longer guided.

First cycle after cold start

If the bit for the current task is on 0, this indicates that the first cycle is being carried out after a cold start.

l l

%SW10:X0: is assigned to the MAST Master task

%SW10:X1: is assigned to the FAST fast task

Watchdog duration Reads the duration of the watchdog as set in configuration. It is expressed in ms (10…500 ms).

Management

User

System

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CAUTION

Matters relating to system words %SW8 and %SW9:

Caution: outputs for modules connected to the X bus switch automatically to fallback mode. Outputs for devices connected to the

FIPIO bus remain as they were before the bit was set to 1.

Failure to observe this precaution can result in injury or equipment damage.

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Description of system words %SW12 to %SW18

In-depth description

Words

%SW12

%SW13

%SW17

%SW18

Description of system words %SW12 to %SW18

Function

Terminal port UNI-

TELWAY address

Description

UNI_TELWAY address of terminal port (in slave mode) as defined in configuration and loaded into this word on cold start.

Main address of the station

Indicates for the main network: l l the station number (least significant byte) from 0 to 127 the network number (most significant byte) from 0 to 63

(micro-switch value on PCMCIA card)

Fault status on floating operation

Absolute time counter

On detection of a fault in a floating arithmetic operation, bit

%SW18 is set to 1 and %SW17 fault status is updated according to the following coding : l l

%SW17:X0 = Invalid operation / result is not a number

%SW17:X1 = Non-standardized operand / result is acceptable l l l l

%SW17:X2 = Divided by 0 / result is infinity

%SW17:X3 = Overflow / result is infinity

%SW17:X4 = Underflow / result is 0

%SW17:X5 = Result is not precise

This word is reset to 0 by the system on cold start, and also by the program for re-usage purposes.

This double word is used to calculate duration.

It is incremented every 1/10th of a second by the system

(even when PLC is on STOP). It can be read and written by the user program or by the terminal.

Management

System

User

System

User

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Description of system words %SW20 to %SW25

In-depth description

Words

%SW20

%SW21

%SW22 to

%SW25

Description of system words %SW20 to %SW25 (associated with Grafcet)

Function

Validity table for

Gracet transitions

Description

Grafcet activity level This word contains the number of active steps to be enabled or disabled for the current cycle. It is updated by the system on each change in the chart.

This word contains the number of valid transitions to be enabled and disabled for the current cycle. It is updated by the system on each change in the chart.

Macro-step clearing table

Each bit in this table corresponds with a macro-step where

%SW22:X0 is for XM0 … %SW25:X16 is for XM63

Macro-steps, for which the associated bit in this table is on 0, will be zeroed when bit %S24 is set on 1.

Management

System

User

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Description of system words %SW30 to %SW35

In-depth description

Words

%SW30

%SW31

%SW32

%SW33

%SW34

%SW35

Description of system words %SW30 to %SW35

Function

Master task execution time

Maximum master task execution time

Minimum master task execution time

Description

Indicates the execution time of the last master task cycle (in ms).

Indicates the longest master task execution time from the last cold start (in ms).

Fast task execution time

Maximum fast task execution time

Minimum fast task execution time

Indicates the shortest master task execution time from the last cold start (in ms).

Indicates the execution time of the last fast task cycle (in ms).

Indicates the longest fast task execution time from the last cold start (in ms).

Indicates the shortest fast task execution time from the last cold start (in ms).

Management

System

Note: More detail on execution time : this is the time elapsed between the beginning (input acquisition) and the end (output update) of a scanning period. This time includes the processing of event tasks and fast tasks, as well as processing console requests.

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Description of system words %SW48 to %SW59

In-depth description

Words

%SW48

%SW49

%SW50

%SW51

%SW52

%SW53

%SW54

%SW55

%SW56

%SW57

%SW58

Description of system words %SW48 to %SW59

Function Description

Number of Events Indicates the number of events processed since the last cold start (in ms). This word can be written by a program or a terminal.

Dater function (1) System words containing date and current time (in BCD): l %SW49: day of the week (1 for Monday through to 7 for

Sunday).

l l l l

%SW50: Seconds (SS00)

%SW51: Hours and Minutes (HHMM)

%SW52: Month and Day (MMDD)

%SW53: Year (YYYY)

These words are manages by the system when bit %S50 is on

These words can be written by the user program of by the terminal when the bit %S50 is set on 1 (See Description of

system bits %S30 to %S59, p. 290 ).

Dater function (1) System words containing date and time of the last power fault or PLC stop (in BCD): l l l l l

%SW54: Seconds (00SS)

%SW55: Hours and Minutes (HHMM)

%SW56: Month and Day (MMDD)

%SW57: Year (YYYY)

%SW58: most significant byte containing the day of the week (1 for Monday through to 7 for Sunday).

Last stop code The least significant byte contains the code for the last stop: l l l l l

1 = switch by the terminal from RUN to STOP

2 = stop caused by software fault (PLC task overrun)

4 = power outage

5 = stop caused by hardware fault

6 = stop on HALT instruction

Management

System

User

System

User

System

302

TLX DR PL7 xxE

Words

%SW59

Function

Adjusting the current date

System objects

Description

Contains two 8 bit series to adjust the current date.

The action is always performed on the rising edge of the bit.

This word is enabled by bit %S59.

Illustration: bits

Day of the week

Secondes

Minutes

Hours

Days

Months

Years

Centuries

Management

User

Note: (1) Only on TSX 37-21/22 and TSX 57 PLC

TLX DR PL7 xxE

303

System objects

Description of system words %SW60 to %SW62

In-depth description

Words

%SW60

Description of system words %SW60 to %SW61 specific to Warm Standby Premium diagnostics.-

Function

Backup PLC diagnostics

Description l l l l l

Diagnostics specific to the backup for a local PLC (Warm

Standby Premium) l l

Significance of the different bits for the word %SW60: l l l

%SW60:X0=1 indicates that the PLC is "Normal"

%SW60:X1=1 indicates that the PLC is in "Backup"

%SW60:X3=0 indicates an I/O fault in FIPIO while PLC is

"Normal", it is the image of bit %S118 l %SW60:X4=0 indicates a rack I/O fault; it is the image of bit %S119 l %SW60:X5=1 indicates a fault has been detected by the self-tests in at least one of the TSX ETY 210 l %SW60:X7=1 indicates a serious fault in the FIPIO network, such as a short circuit or a disconnected terminal block l %SW60:X8=1 indicates a fault in the TSX ETY 110 module used for inter-PLC links l %SW60:X9=1 indicates an inter-PLC communication fault

– it is not possible to recover dual-PLC diagnostics

%SW60:X10 is a reserved bit

%SW60:X11=1 indicates that the Backup PLC is unsuitable to be a "Normal" PLC. This information is generated only in a Normal PLC and has no significance in a Backup PLC.

%SW60:X12=0 indicates that the PLC is station A

%SW60:X12=1 indicates that the PLC is station B

%SW60:X13=1 indicates PLC Run mode

%SW60:X14=1 indicates PLC Stop mode

%SW60:X15=1 indicates PLC Halt mode

Management

System

304

TLX DR PL7 xxE

Words

%SW61

Function

Backup PLC diagnostics

System objects

Description l l

Significance of the different bits for the word %SW61: l %SW61:X0=1 indicates there is a problem on the Data

Base exchange via the Ethway inter-PLC link. This information is only generated for a Normal PLC in Run mode.

%SW60:X1=1 indicates that the PLC is in "Backup"

%SW61:X1=1 indicates there is a problem in communication between a TSX ETY 210 client TCP-IP module third party device. This information is generated only for a Normal PLC in Run mode. When this bit changes to 1, a switch is caused if the Backup PLC can become a l

Normal PLC.

%SW60:X4=0 indicates a rack I/O fault; it is the image of l bit %S119

%SW60:X5=1 indicates a fault has been detected by the l l l self-tests in at least one of the TSX ETY 210

%SW61:X2 is a reserved bit

%SW61:X3 is a reserved bit

%SW61:X4=1 indicates the first correct Data Base l exchange

%SW61:X5=1 indicates that the processor has been

Stopped by the backup function. Diagnostics is given in the word %MWp.14.2

l l

%SW61:X6 is a reserved bit

%SW61:X7=0 indicates a problem in configuration of operation of the backup function. Diagnostics is given in the word %MWp.14.2

l %SW61:X7=1 indicates that the backup function has been correctly configured l %SW61:X8 to %SW61:X15 are reserved bits p: designates the processor slot

Management

System

TLX DR PL7 xxE

305

System objects

Words

%SW62

Function Description

Display of the arbiter function for bus and producer / consumer of FIPIO bus.

The least significant byte indicates the state of the producer / consumer function,

The most significant byte indicates the state of the bus arbiter function (BA)

Byte value: l l

16#00: the function does not exist (no FIPIO application),

16#07: the function currently in STOP BA (STOP BA order is sent and the command has not finished).

l 16#0F: the function currently in RUN BA (RUN BA order is sent and the command has not finished).

l 16#70: the function has been initialized but is not operational (in STOP BA mode), l 16#F0: the function is currently being executed normally

(in RUN BA mode). BA),

Management

System

306

TLX DR PL7 xxE

System objects

Description of system words %SW63 to %SW65

Detailed description

Words

%SW63 to

%SW65

Description of system words %SW63 to %SW65 specific to Warm Standby Premium diagnostics.

Function

Exchange of diagnostics words between PLCs

Description

Dual-PLC backup diagnostics is available in the words

%SW63 to %SW65.

Normal PLC words %SW63, %SW64 and %SW65 are respective to Backup PLC words %SW60, %SW61 and

%SW62. Similarly, Backup PLC words %SW63, %SW64 and

%SW65 are respective to Normal PLCwords %SW60,

%SW61 and %SW62.

Illustration

Management

System

Normal

PLC

Backup

PLC

Standart diagnostic

PLC backup diagnostic

Dual PLC backup diagnostic

%SWxx

%SW60, %SW61,

%SW62

%SW63, %SW64,

%SW65

%SW66 Warm Standbyl

Premium global diagnostic

%SWxx

%SW60, %SW61,

%SW62

%SW63, %SW64,

%SW65

%SW66

These words are exchanges via the Ethway inter-PLC link

(TSX ETY 110 module)

TLX DR PL7 xxE

307

System objects

Description of system words %SW66 to %SW69

Detailed description

Words

%SW66

Description of system word %SW66 for Warm Standby Premium diagnostics

Function Description Management

Global diagnostics for Warm Standby

Premium architecture

In each of the PLCs, global diagnostics of Warm Standby

Premium are created from the backup diagnostics of the two

PLCs. These global diagnostics are stored in %SW66. Its bits have the following significance :

System l l l l l l l l l l l

%SW66:X0=0 indicates Warm Standby Premium downgraded functioning.

%SW66:X0=1 indicates Warm Standby Premium nominal functioning.

%SW66:X1=1 indicates that PLC A is a Normal PLC

%SW66:21=1 indicates that PLC B is a Normal PLC

%SW66:X3=1 indicates a break-down in inter-PLC communication

Information on PLC A

%SW66:X4=1 indicates a serious FIPIO network fault on PLC A

%SW66:X5=1 indicates that PLC A is on STOP

%SW66:X6=1 indicates that PLC A is on Halt

%SW66:X7=1 indicates an Ethernet TCP-IP communication breakdown in PLC A (module TSX l l l l

ETY 210 or client function) l l

%SW66:X8=1 indicates a breakdown on at least one of the racked modules in PLC A

%SW66:X9=1 indicates a breakdown on at least one of FIPIO devices in PLC A

Information on PLC B

%SW66:X10=1 indicates a serious FIPIO network fault on PLC B

%SW66:X11=1 indicates that PLC B is on STOP

%SW66:X12=1 indicates that PLC B is on Halt

%SW66:X13=1 indicates an Ethernet TCP-IP communication breakdown in PLC B (module TSX

ETY 210 or client function)

%SW66:X14=1 indicates a breakdown on at least one of the racked modules in PLC B

%SW66:X15=1 indicates a breakdown on at least one of FIPIO devices in PLC B

Note: %SW66 X4 to %SW66 X15 information is not significant if an inter-PLC communication breakdown is present (%SW66 X3 = 1)

308

TLX DR PL7 xxE

Words

%SW67

%SW68

%SW69

Time base used by

EF Tempo.

These words contains a time base used by EF Tempo. It is transferred from the Normal PLC to the Backup PLC for updating and synchronisation.

System objects

Description of system words %SW67 to %SW69 for Warm Standby Premium diagnostics.

Function

Network address and dual-PLC station address

Description

This word contains the network address and the dual-PLC station address, which can be used to set up inter-PLC communication. This word must be displayed in hexadecimal for interpretation in the following manner :

MSB network address

LSB station address

Management

System

TLX DR PL7 xxE

309

System objects

Description of system words %SW80 to %SW89

Detailed description

Words

%SW80

%SW81

%SW82

%SW83

%SW84

%SW85

%SW86

%SW87

%SW88

%SW89

Description of system words %SW80 to %SW89

Function

Telegram and message management

Managing communication flows (1) l l l l

Description l l l l

%SW80: No. of messages sent by the system to the terminal port.

%SW81: No. of messages received by the system from the terminal port.

%SW82: No. of messages sent by the system to the

PCMCIA module.

%SW83: No. of messages received by the system from the PCMCIA module.

%SW84: No. of telegrams sent by the system.

%SW85: No. of telegrams received by the system.

%SW86: No. of messages refused by the system.

l l

%SW87: Number of requests processed by synchronous server per master (MAST) task cycle.

%SW88: Number of requests processed by asynchronous server per master (MAST) task cycle.

%SW89: Number of requests processed by server functions (immediately) per master (MAST) task cycle.

Management

System

User

System

Note: (1) Only for TSX/PCX/PMX 57 PLC

310

TLX DR PL7 xxE

System objects

Description of system words %SW96 to %SW97

Detailed description

Words

%SW96

%SW97

These words only exist in TSX 37

Description of system words %SW96 to %SW97

Function

Command and/or diagnostics for save/ restore function of application program and %MW l l l

Description l l l l l l bit 0: requests a send to the save zone This bit is enabled on the rising edge. It is reset to 0 by the system as soon as the restoration of the rising edge has been taken into account.

bit 1: when this bit is on 1, this indicates that the save function has finished. This bit is reset to 0 as soon the rising edge on bit 0 has been taken into account.

bit 2: save report: l l

0 -> save without error,

1 -> error while saving.

bits 3 to 5: reserved.

bit 6: validity of application program saves (idem %S96).

bits 8 to 15: this bit is only significant is the report bit is on

1 (bit 2 = 1 means an error while saving): l 1 -> number of %MW to be saved is greater than the number of %MW that are configured l l

2 -> number of %MW to be saved is greater than 1000 or less than 0,

3 -> number of %MW to be restored is greater than the number of %MW that are configured l 4 -> size of application in internal RAM greater than 15

Kwords (remember that saving %MW is always associated with saving an application program in the internal Flash EPROM),

5 -> facilities are not allowed in RUN,

6 -> presence of a Backup cartridge in the PLC,

7 -> write fault in the Flash EPROM.

Number of %MW to be saved

Parameterizes the number of %MW to be saved.

When this word is between 1 and 1000, the first 1 to 1000

%MW are sent to the internal Flash EPROM.

When this word is 0, only the application program in the internal RAM is sent to the internal Flash EPROM.

Any %MW save is then wiped.

On a cold start, this word is initialized on –1 if the internal

Flash EPROM contains no saved %MW. If the opposite should happen, it is initialized at the value of the number of saved words.

Management

System

User

TLX DR PL7 xxE

311

System objects

Description of system words %SW98 to %SW109

Detailed description

Words

%SW98

Description of system words %SW98 to %SW109

Function

Discrete input module/channel geographical address (2)

Description

When the bit %S98 = 1, this word indicates the Discrete input

(module /channel) geographical address, in the replacement of the TSX SAZ 10 module button :

Management

User

MSB

Module number

LSB

Channel number

%SW99 Discrete input address (2)

When the bit %S99 = 1, this word indicates the Discrete input

(module / channel) geographical address, in the replacement of the centralized display block button :

MSB

Module number

LSB

Channel number

User

%SW108

%SW109

Forced channel counter

Forced analog channel counter

Makes channels forced to 0 or 1 compatible within the application. It is updated by forcing or unforcing channels.

Makes analog channels forced to 0 compatible.

System

Note: (2) Only in TSX 37

312

TLX DR PL7 xxE

System objects

Description of system word %SW116

Detailed description

Words

%SW116

Description of system word %SW116 - FIPIO

Function Description

FIPIO I/O task fault Normally on 0, each bit for this word signifies FIPIO exchange status within the task in which it is being tested.

This word is to be reset on 0 by the user.

l l l l l l l l

More details on words bits %SW116: l x0 = 1 explicit exchange error (variable has not been exchanged on the bus), l x1 = 1 time-out on an explicit exchange (no reply at the end of time-out), l x2 = 1 maximum number of explicit exchanges achieved at the same time, x3 = 1 a frame is invalid, x4 = 1 the length of frame received is greater than the length that was declared, x5 = reserved on 0, x6 = 1 a frame is invalid, or an agent is initializing, x7 = 1 absence of a configured device, x8 = 1 channel fault (at least one device channel is indicating a fault), x9 to x14 = reserved on 0, x15 = Global fault (OR bits 3, 4, 6, 7, 8).

Management

System

User

TLX DR PL7 xxE

313

System objects

Description of system words %SW124 to %SW127

Detailed description

Words

%SW124

%SW125

%SW126

%SW127

Description of system words %SW124 to %SW127

Function

Type of CPU fault

Type of blocking fault

Blocking fault instruction address

Description Management

The last type of CPU fault encountered is written into this word by the system (these codes are unchanged on a cold restart): l l l l

16#30: system code fault

16#60 to 64: stack overrun

16#90: System switch fault: Unforeseen IT

16#53: time-out fault during I/O exchanges

The last type of blocking fault encountered is written into this l l l l l l l word: l l l

16#DEB0: watchdog overrun

16#2258: execution of HALT instruction

16#DEF8: execution of JMP instruction to an undefined label l 16#2XXX: execution of CALL instruction to an undefined sub-program

16#0XXX: execution of an unknown function

16#DEFE: the grafcet program consists of sendings to undefined steps.

16#DEFF: floating point has not been not implemented

16#DEF0: division by 0 (1-->%S18)

16#DEF1: character string transfer error (1-->%S15)

16#DEF2: capacity overflow (1-->%S18)

16#DEF3: index overflow (1-->%S20)

Instruction address that generated the application blocking fault.

l l

%SW126 contains the offset for this address

%SW127 contains the base for this address

System

314

TLX DR PL7 xxE

System objects

Description of system words %SW128 to %SW143

Detailed description

Description of system words %SW128 to %SW143 - FIPIO

Words

%SW128 to

%SW143

Function

Faulty FIPIO connection point

Description

Each bit in this group of words indicates the state of a device connected to the FIPIO bus.

Normally on 1, the presence of a 0 in one of these bits indicates the appearance of a fault in this connection point.

For a non-configured connection point, the corresponding bit is always 1.

Table showing correspondence between word bits and connection point address.

Management

System

%SW128 :

%SW129 :

%SW130 :

%SW131 :

%SW132 :

%SW133 :

%SW134 :

%SW135 :

%SW136 :

%SW137 :

%SW138 :

%SW139 :

%SW140 :

%SW141 :

%SW142 :

%SW143 : x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 x11 x12 x13 x14 x15

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63

64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79

80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95

96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111

112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127

128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143

144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159

160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175

176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191

192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207

208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223

224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239

240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255

TLX DR PL7 xxE

315

System objects

Description of system words %SW144 to %SW146

Detailed description

Words

%SW144

%SW145

Description of system words %SW144 to %SW146 - FIPIO

Function

FIPIO bus arbiter function operating mode

Modification of

FIPIO bus arbiter parameters

Description

This system word is used to start and stop the bus arbiter function and the producer / consumer function. It can modify the starting, automatic and manual modes of the bus in the l l l l l l event of a stop.

l l x0 = 1 producer / consumer function in RUN mode x0 = 0 producer / consumer function in STOP mode (no variables are exchanged in the bus), x1 = 1 bus arbiter is in RUN 0 mode x1 = 0 bus arbiter is in STOP mode (no variables or message scanning is carried out in the bus), x2 = 1 automatic start in the event of an automatic bus stop x2 = 0 manual start in the event of an automatic bus stop x3 = reserved on 1 x4 to x15 reserved on 0.

The bits are set on 1 by the user, and reset to 0 by the system when initialization has been carried out.

l x0 = 1 modification of bus arbiter priority: the most significant system word byte contains the priority value of the bus arbiter which will applied to the bus.

l x1 = 1 modification of the return time value (Rt): the most significant system word byte contains the Rt value (in ms) l which will be applied to the bus. The system word is zeroed when initialization is complete.

x2 = 1 modification of the pause time value (T0): the most significant system word byte contains the T0 value (in ms) which will be applied to the bus. The system word is zeroed when initialization is complete.

l l l l x3 to x7 are reserved on 0.

x8 = 1 value of bus arbiter priority, x9 = 1 Rt value, x10 = 1 T0 value.

These parameters can be modified when the bus arbiter is in

RUN mode, but for them to be taken into account by the application, the BA must be stopped then restarted.

Management

User

System

316

TLX DR PL7 xxE

Words

%SW146

System objects

Function

FIPIO bus arbiter function display

Description Management

The least significant byte indicates the state of the producer / consumer function

The most significant byte indicates the state of the bus arbiter function.

Byte value l l

16#00: the function does not exist (no FIPIO application),

16#07: the function currently in STOP (ie STOP order has been sent and the command has not finished).

l 16#0F: the function currently in RUN (ie RUN order has been sent and the command has not finished).

l 16#70: the function has been initialized but is not operational (in STOP mode), l 16#F0: the function is currently being executed normally

(in RUN mode).

System

CAUTION

Matters affecting the words %SW144 and %SW145 modifying these system words can lead the PLC station to stop.

Failure to observe this precaution can result in injury or equipment damage.

TLX DR PL7 xxE

317

System objects

Description of system words %SW147 to %SW152

Detailed description

Words

%SW147

%SW148

%SW149

%SW150

%SW151

%SW152

Description of system words %SW147 to %SW152

Function Description

MAST network cycle time

A value which is not zero indicates, in ms, the MAST task network cycle (TCR-MAST) time value.

FAST task network cycle time value

A value which is not zero indicates, in ms, the MAST task network cycle (TCR-FAST) time value.

Number of frames sent

Number of frames received

Number of messages resumed

Reserved on 0.

This word indicates the number of frames sent by the FIPIO channel manager

This word indicates the number of frames received by the

FIPIO channel manager.

This word indicates the number of messages resumed by the

FIPIO channel manager.

Management

System

318

TLX DR PL7 xxE

System objects

Description of system word %SW153

Detailed description

Words

%SW153

Description of system word %SW153 - FIPIO

Function Description list of FIPIO channel manager faults.

Each bit is set on 1 by the system, and reset to 0 by the user.

See the list below.

Management

User

System

Bits description l l l l l l l l l l l

X0 = overrun station fault: corresponds to losing an MAC symbol while receiving

– this is linked to the receiver reacting too slowly.

X1 = message refusal fault: indicates an acknowledged message was refused, or it was not acknowledged in the first place. receiving MAC.

X3 = underrun station fault: corresponds to the station being unable to respect transfer speed on the network.

X4 = physical layer fault: corresponds to a prolonged transmission absence in the physical layer.

X5 = non-echo fault: corresponds to a fault for which the transmitter is currently sending out, with an emission current in the operating format, and at the same time detection that a signal is absent on the same channel.

X6 = excessive communication fault: corresponds to a fault whereby the transmitter is controlling the line for longer than the maximum set operating limit.

This fault is caused, for example, by deterioration of the modulator, or by a faulty layer data link.

X7 = undercurrent fault: corresponds to a fault whereby the transmitter generates, when sollicited, a current weaker than the minimum set operating limit. This fault is caused by, for example, by increased line impedance (eg. open line etc.).

X8 = breached frame fault indicates that a pause has been received in the frame body, after identifying a delimiter at the start of the frame, and before identifying a delimiter at the end of the frame. The appearance of a pause in normal operating conditions takes place after a delimiter has been identified at the end of a frame.

X9 = CRC frame receiving fault: indicates that the CRC calculated on a frame usually received and the CRC contained within this frame have different values.

X10 = receiving frame code fault: indicates that certain symbols, exclusive to delimitation sequences at the beginning and end of frames, have been received within the body of the frame.

X11 = length fault within the frame received: more than 256 bytes have been received for the frame body.

TLX DR PL7 xxE

319

System objects l l l l

X12 = unknown frame type received: within the frame body, the fist byte identifies the type of frame link. A set number of frame types are defined in the WORLDFIP norm link protocol. Any other code found within a frame is therefore an unknown frame type.

X13 = a truncated frame has been received: a frame section is recognized by sequence of symbols delimiting the end of the frame, while the destination station awaits the arrival of a delimiter sequence for the beginning of the frame.

X14 = unused, non-significant value.

X15 = unused, non-significant value.

320

TLX DR PL7 xxE

System objects

Description of system word %SW154

Detailed description

Words

%SW154

Description of system word %SW154 - FIPIO

Function Description list of FIPIO channel manager faults.

Each bit is set on 1 by the system, and reset to 0 by the user.

See the list below.

Management

User

System

Bits description l l l l l l l l l

X0 = aperiodic time-out sequence: indicates that the messages or aperiodic variables window has overflowed its limit within an elementary cycle of the macrocycle.

X1 = refusal of messaging request: indicates that the message queue is saturated

- for the time being the bus arbiter is in no position to latch onto nor comply with a request.

X2 = urgent update command refused: indicates that the queue for urgent aperiodic variables exchange requests is saturated - for the time being the bus arbiter is in no position to latch onto nor comply with a request.

X2 = non-urgent update command refused: indicates that the queue for nonurgent aperiodic variables exchange requests is saturated - for the time being the bus arbiter is in no position to latch onto nor comply with a request.

X4 = pause fault: the bus arbiter has not detected any bus activity during a time period larger than the standardized WorldFip time period.

X5 = a network collision has occurred on identifier transmission: indicates activity on the network during theoretical pause periods. Between a transmission and awaiting a reply from the bus arbiter, there should be nothing circulating on the bus. If the bus arbiter detects activity, it will generate a collision fault (for example, when several arbiters are active at the same time on the bus).

X6 = bus arbiter overrun fault: indicates a conflict on accessing the bus arbiter station memory.

X7 = unused, non-significant value.

X8 to X15 = reserved on 0.

TLX DR PL7 xxE

321

System objects

Description of system words %SW155 to %SW162

Detailed description

Words

%SW155

%SW160

%SW161

%SW162

Description of system words %SW155 to %SW162

Function

Number of explicit exchanges

Description

Number of explicit exchanges currently being processed

Result of the last recording (diagnostics function).

Result of the last non-recording (diagnostics function).

Number of errors currently in the diagnostics buffer.

Management

System

322

TLX DR PL7 xxE

Symbols

TLX DR PL7 xx

Index

A C

323

Index

324

%Ti, 40, 98, 99, 101, 102, 103, 105

A

B

BCD_TO_INT, 131

BIT_D, 236

BIT_W, 236

C

TLX DR PL7 xx

D

D_BIT, 238

D_TO_INT, 131

DATE_TO_STRING, 222, 224

DINT_TO_STRING, 173, 176

DSHL_RBIT, 241

DSHR_RBIT, 241

DSHRZ_C, 241

E

F

G

GRAY_TO_INT, 138

H

HALT, 75

TLX DR PL7 xx

HW, 140

I

Instruction

INT_TO_STRING, 173, 176

L

M

N

NOP, 77

NOT, 147

NOT_ARX, 234

O

Object

Index

325

Index

ORF, 25

ORN, 25

ORR, 25

P

PL7 Instruction, 14

PTC, 210

R

S

326

T

U

UNMASKEVT, 76

W

X

TLX DR PL7 xx

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Πίνακας περιεχομένων

Διαφήμιση

Reference manual

PL7 Micro/Junior/Pro

Detailed description of

Instructions and Functions

Related Documentation

Table of Contents

About the book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Chapter 1

Standard instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Chapter 2

Advanced instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Chapter 3

System objects. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281

About the book

At a Glance

Standard instructions

Introduction

1.1

Introduction to the PL7 instructions

PL7 Instructions

1.2

Boolean instructions

Introduction

Bit object instructions

Definition of the main boolean objects

Loading instructions

Assign instructions

AND Logic Instruction

OR Logic Instruction

Exclusive OR Instructions

1.3

Predefined function blocks

Introduction

Introduction to timer function block %TMi

%TMi timer block operating mode

Operation of timer function block %TMi in TON mode

Operation of timer function block %TMi in TOF mode

Operation of timer function block %TMi in TP mode

Programming and configuring timer function blocks

Specific cases of operation for the series 7 timer

Introduction to the up-down counter function block

How the up/down counter function block works

Configuration and programming

1.4

Numerical processing on integers

Introduction

Introduction to numerical processing using integers

Comparison instructions

Assign instructions

Word assignment

Arithmetic instructions on integers

Logic instructions

Numerical expressions

1.5

Program instructions

Introduction

Subroutine call

Subroutine return

Jump in the program

End of program instructions

Program stop

Event masking/unmasking instructions

NOP Instructions

Advanced instructions

Introduction

2.1

Introduction to advanced instructions

Introduction to the advanced instructions

2.2

Advanced predefined function blocks

Introduction

Introduction to Monostable function block

Monostable block function operation

Configuring and programming monostable function blocks

Introduction to Register function block

Register function block operation in FIFO mode

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