Characteristics. Schneider Electric PL7 Micro/Junior/Pro - Communication applications, volume 1

PDF

Document

Communication via character mode: General

11.2 Characteristics

Introduction

Aim of this

Section

What's in this

Section?

This Section introduces the characteristics of using communication via character mode.

This Section contains the following Maps:

Topic

Compatibility

Performance

Operating mode

Page

227

228

230

226

TLX DS COM PL7 xxE

Communication via character mode: General

Compatibility

Hardware

Software

This type of communication is available for: l l l

TSX Micro and TSX Premium PLCs via the terminal port associated with the

RS485 physical layer, l l l

TSX Premium via: the PCMCIA TSX SCP11 card associated with the RS232 physical layer, the PCMCIA TSX SCP 112 card associated with 20 mA current loops, the PCMCIA TSX SCP 114 card associated with RS422 and RS485 physical l layers, the built-in link on the TSX SCY 21600 / 21601 module associated with the physical layer RS485,

TSX Micro accepts the PCMCIA cards described below.

The terminal port of TSX Premium and TSX Micro processors can only process one communication function type: l l l

INPUT_CHAR,

PRINT_CHAR,

OUT_IN_CHAR.

For each terminal port communication, the maximum frame size is 120 bytes per communication function.

PCMCIA cards can process: l l

4 communication functions simultaneously for TSX Micro PLCs,

8 communication functions simultaneously for TSX Premium PLCs.

The built-in link on TSX SCY 21600/21601 modules can process 8 communication functions at the same time.

For each PCMCIA card or built-in link communication, the maximum frame size is

4Kbytes per communication function.

TLX DS COM PL7 xxE

227

Communication via character mode: General

Performance

Introduction

Time with

PCMCIA card

The following tables are used to assess the typical exchange time in character mode for: l l

PCMCIA cards and the built-in link on TSX SCY 21600/21601 modules, the terminal port.

The results shown correspond to the average time (in ms) for the PRINT_CHAR function to be executed.

Average time according to programmed cycle time and number of characters sent:

Length of message 80 characters

Speed in bits/ s

T cycle in ms Average time

4800

9600

PCMCIA

190

200

9600

19200

108

118

137

100

125

135

157

SCY 21600

210

220

230

105

120

960 characters

Average time

PCMCIA

2100

2166

2300

1120

1147

1148

604

696

698

SCY 21600

2200

2300

2400

1200

1230

1240

700

800

810

228

TLX DS COM PL7 xxE

Time with terminal port

Communication via character mode: General

Average time according to programmed cycle time and with 80 characters sent:

9600

19200

1200

4800

Speed in bits/s

1200

100

255

100

255

100

255

T cycle in ms

100

129

139

149

199

355

1018

242

249

299

455

TSX 37

Average time

939

945

948

1000

105

155

285

129

139

149

199

355

1018

242

249

299

455

TSX 57

Average time

939

945

948

1000

TLX DS COM PL7 xxE

229

Communication via character mode: General

Operating mode

Introduction

General graph

The following graph describes the operating modes in character mode for PCMCIA cards, for the built-in link on TSX SCY 21600/21601 modules and the terminal port.

The operating mode is as follows:

Module stopped

Power up

Module off

Operation

Module configured

Communication function

Module in self-test phase

Reset

Module not configured Self-tests OK

Configuration l l l l after power-up the module self-tests. During this phase the warning indicators flash.

if there is no PL7 application in the PLC, the module remains in await configuration mode.

if there is a PL7 application in the PLC, the application configuration is sent to the module, which then starts.

in case of power outage, the PLC processor performs a warm restart. The module then re-launches its self-test procedure.

230

TLX DS COM PL7 xxE

Configuring character mode communication

Introduction

Aim of this

Chapter

What's in this

Chapter?

This Chapter describes the Configuration process during set-up of character mode communication.

This Chapter contains the following Maps:

Topic

How to access PCMCIA card parameters in character mode

How to access terminal port parameters

How to access TSX SCY 21600 / 21601 module parameters

Configuration screen in character mode

Functions accessible in character mode

Parameters in character mode linked to transmission

Parameters in character mode linked to message ends

Parameters in character mode linked to flow control

Additional parameters

Page

231

TLX DS COM PL7 xxE

Character mode configuration

How to access PCMCIA card parameters in character mode

Introduction

How to access the link

This operation describes how to access configuration parameters for the character mode link via PCMCIA cards.

The following table shows the procedure for accessing the character mode link:

Step

Action

Access the communication channel configuration screen.

Select the communication channel from the drop-down menu CHANNEL 1

Example

CHANNEL 1:

CHANNEL 1

CHANNEL 0

CHANNEL 1

Duration

(No PCMCIA submodule)

MAST

Select one of the following PCMCIA cards from the drop-down menu: l l l

TSX SCP 111 PCMCIA CARD RS232 MP

TSX SCP 112 PCMCIA CARD BC MP

TSX SCP 114 PCMCIA CARD RS485 MP

Example

CHANNEL 1:

CHANNEL 1 TSX SCP 111 PCMCIA CARD RS 232 MP

(Link not configured)

TSX FPP 200 PCMCIA FIPWAY CARD

TSX FPP 10 PCMCIA FIPIO CARD

TSX MBP 100 PCMCIA MODBUS* CARD

TSX MDP 10 PCMCIA MODEM CARD

Select the link from the drop-down menu CHARACTER MODE LINK:

Example

CHANNEL 1:

CHANNEL 1

(Link not configured)

UNI-TELWAY LINK

TSX SCP 111 PCMCIA CARD RS 232 MP

MAST

MODBUS/JBUS LINK

232

TLX DS COM PL7 xxE

Character mode configuration

How to access terminal port parameters

Introduction

How to access the link

This operation describes how to access configuration parameters for the character mode link via the terminal port.

The following table shows the procedure for accessing the character mode link:

Step

Action

Access the communication channel configuration screen.

Select the link from the drop-down menu CHARACTER MODE LINK.

Example

CHANNEL 0:

CHANNEL 0

UNI-TELWAY LINK

Terminal Port

MAST

TLX DS COM PL7 xxE

233

Character mode configuration

How to access TSX SCY 21600 / 21601 module parameters

Introduction

How to access the link

This operation describes how to access configuration parameters for the character mode link via TSX SCY 21600 / 21601 modules for TSX Premium.

The following table shows the procedure for accessing the character mode link:

Step

Action

Access the communication channel configuration screen of the chosen module

Select the communication channel from the drop-down menu CHANNEL 0

Example

CHANNEL 1:

CHANNEL 1

CHANNEL 0

CHANNEL 1

(No PCMCIA submodule)

Duration MAST

3 Select the link from the drop-down menu CHARACTER MODE LINK.

Example

CHANNEL 1:

CHANNEL 1 TSX SCP 111 PCMCIA CARD RS 232 MP

(Link not configured)

UNI-TELWAY LINK

MAST

MODBUS/JBUS LINK

234

TLX DS COM PL7 xxE

Character mode configuration

Configuration screen in character mode

Introduction

Illustration

This screen, split into two zones, is used to declare the communication channel and to configure the parameters necessary for a character mode link.

The screen dedicated to character mode communication looks like this:

TSX 3722 [POSITION 00.0..1]

Configuration

Designation: 3721 PROCESSOR

CHANNEL 1:

CHANNEL 1 TSX SCP 111 PCMCIA CARD RS 232 MP

CHARACTER MODE LINK MAST

Flow control

RTS/CTS hardware

Stop on reception

Character 1

RTS/DCD Hardware

Xon/Xoff None

Stop

Echo

Receiving

CR LF 0

Characters included

Restart from 1st. char.

CR -> CR LF

Beep Management

Backspace management

Current Loop (PSR)

Character 2

Multidrop Point to point

Stop

CR LF 0

Characters included

Full Duplex

(RS 422)

Transmission Speed

9600 Bits/

Stop on silence

Stop

Data

7 bits

8 bits

Parity

Even Odd

RTS/CTS delay

0 x 100ms

1 ms

Stop

1 bit

2 bits

Without

Data carrier (DCD)

Elements and functions

This table describes the different zones that make up the configuration screen:

Address Zone

1 common

2 specific

Function

See Description of configuration screens for communication,

p. 166 .

Is used to select or complete the parameters of a character mode link.

It is split into four different types of information: l l l l the transmission parameters.

parameters concerning end of message detection, parameters concerning flow control, additional parameters.

TLX DS COM PL7 xxE

235

Character mode configuration

Functions accessible in character mode

Introduction

Accessible functions

Functions

Flow control

Echo

Current Loop (PSR)

Stop on reception

Full duplex

Transmission speed

Stop on silence

Data / Stop

Parity

RTS/CTS delay

Data carrier (DCD)

Depending on the chosen communication supports, some parameters cannot be modified. They appear grayed out.

The summary table below shows the various choices possible:

Yes

SCP 111 SCP 112 SCP 114 l l l l l l

RTS/CTS

RTS/DCD

Xon/Xoff

None l

On reception

Restart from

1st. char.

CR->CRLF

Yes

Yes l l l

Yes

On reception

Restart from

1st. char.

CR->CRLF

Yes

SCY 21600/

21601

Yes

Terminal Port

On reception

Yes

No l l

CR/LF with 1

Micro

No with 1

Premium

Yes

Beep and Back-space management can be accessed whatever the type of support.

236

TLX DS COM PL7 xxE

Character mode configuration

Parameters in character mode linked to transmission

Introduction

Transmission speed

Data

Once the communication channel has been configured, complete the parameters dedicated to transmission.

They are split into four windows: l l l l the Transmission speed window, the windows specific to Data and Stop, the Parity window, the RTS/CTS delay window,

The window looks like this:

Transmission Speed

9600 Bits/s

It is used to select the transmission speed for the character mode protocol used by l l l the module: the default speed is 9600 bits/s.

the available speeds are 1200, 2400, 9600 and 19200 bits/s.

speeds of 300 and 600 bits/s are only available with a PCMCIA TSX SCP 111 card.

l you are advised to adjust transmission speed according to the remote device.

The window looks like this:

Data

7 bits

8 bits

The Data fields specify the size of data that can be exchanged on the line. 7 and 8 bit values are available. You are advised to adjust the number of data bits according to the remote devices.

Note: The default value is 8 bits.

TLX DS COM PL7 xxE

237

Character mode configuration

Stop The window looks like this:

stop

1 bit

2 bits

The Stop field is used to complete the number of stop bits employed for communicating in character mode. Possible values are 1 or 2 stop bits. You are advised to adjust the number of stop bits according to the remote devices.

Note: The default value is 1 stop bit.

Parity

RTS/CTS delay

The window looks like this:

Parity

Even Odd Without

This field is used to define the addition or non-addition of a parity bit, and its type.

Possible values are Even, Odd, or none (Odd by default).

It is advisable to adjust the parity according to the remote stations.

The window looks like this:

RTS/CTS delay

0 x 100ms Data carrier (DCD)

Before each transmission of a character string, the module activates the RTS signal

(Request To Send) and awaits the activation of the CTS signal (Clear To Send).

It is used to complete: l the maximum waiting time between the two signals. If this time has elapsed, the request is not sent onto the bus.

l l l the value is expressed in hundreds of milliseconds,

The default value is 0 ms.

l l the value is between 0 and 10 s, the value 0 specifies the absence of delay management between the two signals.

the carrier management (DCD signal, Data Carrier Detected) is only used in the event of communication with a modem with a controlled carrier: l If the option is selected, character reception is only enabled if the DCD carrier l signal is detected,

If the option is not selected, all the characters received are taken into account.

238

TLX DS COM PL7 xxE

Character mode configuration

Parameters in character mode linked to message ends

Introduction

Usage conditions

Stop on reception

After having configured the communication channel, the end of message detection parameters must be completed.

l l

They are split into two windows: the Stop on reception window: a stop condition triggered by a special character, the Stop on silence window: a stop condition triggered by a silence.

Activating one of these conditions leads to the following events: l the INPUT_CHAR communication function is not able to read of a defined number of characters. The Number of characters to be read parameter must be equal to 0.

l the OUT_IN_CHAR communication function may be used on reception.

Selection of stop on silence results in deselection of stop by character. Inversely, selection of stop by character will deselect stop on silence.

The window looks like this:

Stop on reception

Character 1

Stop

CR LF 10

Characters included

Character 2

Stop

CR LF 0

Characters included

A receive request can be discontinued on receiving a particular character.

l l l l

The following parameters are used to define up to two end of message characters:

Stop: is used to activate stop on reception by an end character,

CR: is used to detect the end of a message by a carriage return,

LF: is used to detect the end of a message by a line feed, an entry field: is used to identify an end character which is different from a CR or

LF character, using a decimal value.

The possible values are: l 0 to 255 if the data is coded onto 8 bits, l 0 to 127 if the data is coded onto 7 bits,

Character included: check the box if you wish the end character(s) to be included in the receive table for the PL7 PLC application.

TLX DS COM PL7 xxE

239

Character mode configuration

Stop on silence The window looks like this:

Stop on silence

Stop 1 ms

This parameter is used to detect the end of a message on reception by the absence of an end character for a given time period.

Stop on silence is enabled when the Stop box is checked. The duration of the silence (in milliseconds) is set in the entry field.

Note: Available values are between 1 ms and 10000ms.

240

TLX DS COM PL7 xxE

Character mode configuration

Parameters in character mode linked to flow control

Introduction

Flow control window

Once the communication channel has been configured, the flow control parameters must be entered. See

Flow control, p. 224.

The window looks like this:

Flow control

RTS/CTS hardware

RTS/DCD Hardware

Xon/Xoff None

Selection of flow control depends on the remote device: l l l l

RTS/CTS hardware: if the device manages this flow control.

RTS/DCD hardware: if the device manages this flow control.

Xon/Xoff: if the device manages this flow control.

None: if the device does not manage flow control.

TLX DS COM PL7 xxE

241

Character mode configuration

Additional parameters

Introduction

Echo

Beep management l l l l

Configuring a link using character mode requires the following four parameters to be configured: the Echo window, the Beep management parameter, the Back-space management parameter, the Full Duplex (RS 422) parameter,

This window is used to select and configure reception echo management.

Echo

On reception

Restart from 1st. char.

CR -> CR LF

Any character received by the PLC is immediately resent as an echo on the line

(which allows the remote device to carry out a control procedure).

To enable echo management, check the On reception box.

If, during reception, a write request is sent by the PLC, echo on reception is interrupted. When the write request has finished, the echo is restarted in two distinct ways: l either from the first character received, in which case check the Restart from 1st

char. box, l or from the last interrupted character , in which case uncheck the Restart from

1st char. box,

Selecting the CR --> CR LF box is used to send as part of an echo the carriage return character followed automatically by the line feed character (LF = 16#0A) after reception of any carriage return character (CR = 16#0D).

Checking the Beep management box causes a beep to be heard when the module receive buffer is empty or full.

Beep Management

Backspace management

Uncheck the box if the card is connected to a MMI terminal.

242

TLX DS COM PL7 xxE

Backspace management

Full Duplex

(RS 422)

Character mode configuration l l l

Checking the Backspace management box ensures that each backspace character received is not stored and that the previous character is canceled.

In addition, if the echo on reception is active, the PLC transmits three characters in the following order:

Backspace (= 16#08) space (= 16#20)

Backspace (= 16#08)

If the box is deselected, any Backspace character received is stored like any other character.

Checking this box enables Full Duplex communication. Otherwise communication is

Half Duplex. Activating this function depends on the remote device.

Full Duplex

(RS 422)

TLX DS COM PL7 xxE

243

Character mode configuration

244

TLX DS COM PL7 xxE

Programming communication in character mode

Available communication functions

Introduction

Available functions

This page describes the communication functions available in character mode, and presents an example of communication between two stations (TSX Micro and TSX

Premium).

Three specific communication functions are defined to send and receive data on a communication channel in character mode: l l l

PRINT_CHAR : sends a character string. See Writing a string of characters.

PRINT_CHAR, p. 115.

INPUT_CHAR : character string read request. See Reading a character string:

INPUT_CHAR, p. 120.

OUT_IN_CHAR : sends a character string followed by a read request. See

Sending/receiving a string of characters : OUT_IN_CHAR, p. 125.

Note: Usage of these functions must be consistent with the configuration.

245

TLX DS COM PL7 xxE

Character mode programming

Example A station at the address {20.1} on a FIPWAY network wants to send a character string to then receive a character string from a video terminal connected via the builtin link of a TSX SCY 21601 module at station address {20.3}.

FIPWAY

246

{20.1} {20.3}

Programming the communication function:

%I3.8

%MW170:x0 OPERATE

(1)

(1) OUT_IN_CHAR(ADR#{20.3}0.0.SYS, 1, %MB300:10, %MB310:10, %MW170:4)

The following table describes the different parameters of the function:

Parameter

ADR#{20.3}0.0.SYS

%MB300:10

%MB310:10

%MW170:4

Description

Address of destination device for the message

Send / Receive

Contents of message to be sent

Contents of the message received

Exchange report, length of string sent, then length of string received

Note: Before each function starts, the number of characters to be sent must be given in the length parameter (in bytes). In this example: %MW173 = 10. At the end of the exchange, it will contain the number of characters received (in bytes). The value 0 is used to send the entire character string.

TLX DS COM PL7 xxE

Debugging communication using character mode

Introduction

Aim of this

Chapter

What's in this

Chapter?

This Chapter describes the Debugging process during set-up of character mode communication.

This Chapter contains the following Maps:

Topic

Debugging screen in character mode

Debugging parameters in character mode

How to test a communication channel

Page

248

249

251

247

TLX DS COM PL7 xxE

Character mode debugging

Debugging screen in character mode

Introduction

Illustration

This screen, split into two zones, is used to declare the communication channel and to configure the parameters required for a character mode link.

The screen dedicated to character mode communication looks like this:

TSX 3721 [POSITION 00.0..1]

Debugging

Designation: TSX 3721 Version: 0.4

CHANNEL 0:

CHANNEL 0 Terminal Port

CHARACTER MODE Link

Errors

Sending 0

Receiving 0

Reset Counters

Message Sent

Send Request

IO RUN

Send

Receive

Send / Receive

ERR DIAG.

Message Received

Number of characters received 0

ASCII

Hex.

Elements and functions

This table describes the different zones that make up the debugging screen:

Address Zone

1 common

2 specific

Function

Description of communication debugging screens, p. 168

Is used to access the debugging parameters of a character mode link.

248

TLX DS COM PL7 xxE

Character mode debugging

Debugging parameters in character mode

Introduction

Errors Window

Request

Transmission window l l l l

The specific part is split into four windows: the Errors window, the Request transmission window, the Message sent window, the Message received window,

The window looks like this:

Errors

Sending

Receiving

Reset Counters

This window indicates the number of communication errors counted by the communication module.

l On transmission: corresponds to the number of errors on transmission

(image of %MWxy.i.4 word) l On reception: corresponds to the number of errors on reception

(image of %MWxy.i.5 word)

The button Reset Counters resets these counters to zero.

The window looks like this:

Send request

Send

Receive

Send / Receive l l l

This window is used to test a communication channel by transmission and/or reception of a character string.

the Send button transmits a character string.

the Receive button is used to receive a character string.

the Send/Receive button is used to send a character string and wait for a reply.

Note: Reception can be stopped by pressing the Escape button, or if a message is received.

TLX DS COM PL7 xxE

249

Character mode debugging

Message Sent window

The window looks like this:

Message Sent

Test for sending a character string I

Message

Received window

This window is used to enter a message to be sent during a communication test using the Send and Send/Receive buttons.

The window looks like this:

Message

Number of characters received 0

ASCI

Hex.

This window is used to read a received message as a result of a communication test by using the Receive and Send/Receive buttons.

The ASCII and Hexa buttons are used to display text in hexadecimal or in ASCII format.

250

TLX DS COM PL7 xxE

Character mode debugging

How to test a communication channel

Introduction

How to send a character string

This page describes the procedure for testing a communication channel from the debugging screen.

The following procedure is used to send a character string with a remote device.

Step

Actions

Enter the character string to be sent in the Message sent window.

Note: Special characters can also be sent. They must begin with the $ character (example using carriage return character: $0D).

Click on the Send button.

Result

If the exchange is correct, a window specifying that the exchange is correct appears. On the remote device display, check whether the string has been transmitted.

How to receive a character string

The following procedure is used to receive a character string with a remote device.

For efficient operation, you must remember that this test requires stop on reception to be configured either via a special character, or via a silence.

Step

Action

Click on the Receive button.

Send the character string with the frame end character from the remote device.

Note: In this example, stop on reception is performed after a carriage return character (16#0D).

Display the number of characters and the character string received in the

Message received window.

TLX DS COM PL7 xxE

251

Character mode debugging

252

TLX DS COM PL7 xxE

Language objects associated with character mode communication

Introduction

Aim of this

Section

What's in this

Chapter?

This Chapter introduces language objects associated with character mode communication.

This Chapter contains the following Maps:

Topic

Language objects in implicit exchange

Explicit exchange language objects

Explicit exchange management and reports

Language objects associated with configuration

Page

TLX DS COM PL7 xxE

253

Character mode language objects

Language objects in implicit exchange

Introduction

Bit objects

This page describes all the language objects for implicit exchange in character mode communication that can be displayed or modified by the application program. See

Default exchanges, p. 153.

The table below shows the different bit objects for implicit exchange.

Object (1) Function

%Ixy.MOD.ERR

Module error bit

%Ixy.i.ERR

Channel error bit

Meaning

This bit set to 1, indicates a module error

(at least one of the channels is faulty, …)

This bit set at 1 indicates a faulty channel.

Key

(1) Address xy.i

l l l x: corresponds to the rack number y: corresponds to the module number i: corresponds to the channel number

Word objects The table below shows the different word objects for implicit exchange.

Object (1)

%IWxy.i.0

%QWxy.i.0

Function

Signals on input

Signal on output

Meaning

Common signals (byte 0) l l l l x0 = 1: DCD signal x1 = 1: RI signal x2 = 1: CTS signal x3 = 1: DSR signal l x0 = rising edge at 1: stops all exchanges in progress

Key

(1) Address xy.i

l l l x: corresponds to the rack number y: corresponds to the module number i: corresponds to the channel number

254

TLX DS COM PL7 xxE

Character mode language objects

Explicit exchange language objects

Introduction This page describes all the language objects for explicit exchange in character mode communication that can be displayed or modified by the application program. See

Specified exchanges : General points, p. 155.

Word objects for

PCMCIA cards

The table below shows the different word objects for explicit exchange.

Object (1) Function

%MWxy.MOD.2 Module status

%MWxy.i.2

%MWxy.i.3

Standard channel status l l l l l l l l l l l l l l

Meaning l l x0 = 1: defective module x1 = 1: functional error (error between the processor and the module, adjustment or configuration error, …) x2 = 1: terminal block fault (not connected) x3 = 1: self-tests running x4 = 1: reserved x5 = 1: error in hardware or software configuration (the module present is not that declared in the configuration, the sub-modules are not compatible) x6 = 1: missing module x7 = 1: error in one of the sub-modules x0 = 1: single station on the network x1 = 1: not used x2 = 1: transmission line error x3 = 1: not used x4 = 1: internal software fault x5 = 1: error in hard- or software configuration, or configuration missing x6 = 1: communication error with the processor x7 = 1: application fault (double address station)

Character mode type = 16#03

%MWxy.i.4

%MWxy.i.5

%MWxy.i.15

Specific channel status

Error counter

Command

Characters sent in error

Characters received in error l l l x0 = 1: RAZ counter x8 = 1: DTR ON signal x9 = 1: DTR OFF signal

Key

TLX DS COM PL7 xxE

255

Character mode language objects

Object (1)

(1)

Function Meaning

Address xy.i

l l l x: corresponds to the rack number y: corresponds to the module number i: corresponds to the channel number

Word objects for terminal port

The table below shows the different word objects for explicit exchange.

Object (1) Function

%MW0.MOD.2

Module status

%MW0.i.2

%MW0.0.3

Standard channel status

Specific channel status l l l l l l l l l l l l l l

Meaning l l x0 = 1: defective module x1 = 1: functional error (error between the processor and the module, adjustment or configuration error, …) x2 = 1: terminal block fault (not connected) x3 = 1: self-tests running x4 = 1: reserved x5 = 1: error in hardware or software configuration (the module present is not that declared in the configuration, the sub-modules are not compatible) x6 = 1: missing module x7 = 1: error in one of the sub-modules x0 = 1: single station on the network x1 = 1: not used x2 = 1: transmission line error x3 = 1: not used x4 = 1: internal software fault x5 = 1: error in hardware or software configuration, or no configuration x6 = 1: communication error with the processor x7 = 1: application fault (double address station)

Character mode type = 16#03

256

TLX DS COM PL7 xxE

Character mode language objects

Explicit exchange management and reports

Introduction

Word objects

This page describes all the language objects that manage explicit exchanges.

Exchange and report management, p. 157

The table below shows the different word objects for the management of explicit exchanges.

Object (1) Function

%MWxy.MOD.0 Module exchanges in progress

%MWxy.MOD.1 Module report

%MWxy.i.0

%MWxy.i.1

Channel exchanges in progress

Channel report l l

Meaning l l l x0 = 1: reading status in progress x1 = 1: sending of command parameters to the communication module x2 = 1: sending of adjustment parameters to the communication module l l x1 = 0: command parameters received and accepted by the module x2 = 0: adjustment parameters received and accepted by the module l x0 = 1: reading status in progress x1 = 1: sending of command parameters to the communication channel x2 = 1: sending of adjustment parameters to the communication channel l l x1 = 0: command parameters received and accepted by the communication channel x2 = 0: adjustment parameters received and accepted by the communication channel

Key

(1) Address xy.i

l l l x: corresponds to the rack number y: corresponds to the module number i: corresponds to the channel number

TLX DS COM PL7 xxE

257

Character mode language objects

Language objects associated with configuration

Introduction

Internal constants

This page describes all the configuration language objects for character mode communication that can be displayed by the application program.

The following table describes the internal constants:

Object Function

%KWxy.i.0

Type

%KWxy.i.1

Speed / Format

%KWxy.i.2

Stop on silence

%KWxy.i.3

Various

%KWxy.i.4

Signal management

%KWxy.i.5

RTS/CTS delay

%KWxy.i.6

Stop on reception character 1

%KWxy.i.7

Stop on reception character 2

Meaning

Character mode function = 16#03

Byte 0: speed l 00 = 1200 bits/s, ..., 04 = 19200 bits/s

Byte 1: format l l l l x8: bit number (1 = 8 bits, 0 = 7 bits) x9 = 1: parity management x10: Parity type (1 = odd, 0 = even) x11: stop bit (1 = 1 bit, 0 = 2 bits)

Value in ms (0 = not active) l l l l l l l l l l l l x0 = 1: echo on reception x1 = 1: restart echo on 1st character x2 = 1: automatic transmission of L x3 = 1: backspace management x4 = 1: Xon-Xoff flow control active x5 = 1: RTS/DCD flow control active x6 = 1: beep management x7 = 1: RTS/CTS flow control active x0...x7: reserved x8 = 1 if PSR signal management (TSX SCP 112 x9 = 1 if Full Duplex management x10 = 1 if DCD data carrier management

(TSX SCP 111)

Value of delay in hundreds of ms (default value =

0ms) l l x0 = 1: end character 1enabled x1 = 1: end character 1 included

Byte 1: value of end character in decimal l l x0 = 1: end character 2 enabled x1 = 1: end character 2 included

Byte 1: value of end character in decimal

258

TLX DS COM PL7 xxE

Character mode language objects

Internal constants for the terminal port

The following table describes internal constants for the terminal port configured in character mode:

Object Function

%KW0.0.0

Type

%KWxy.i.1

Speed / Format

Meaning

Character mode function = 16#03 l l l l l l l

Byte 0: speed l 00 = 1200 bits/s, ..., 04 = 19200 bits/s

Byte 1: format x8: bit number (1 = 8 bits, 0 = 7 bits) x9 = 1: parity management x10: Parity type (1 = odd, 0 = even) x11: stop bit (1 = 1 bit, 0 = 2 bits) x12 = 1: echo on reception x13 = 1: beep management x14 = 1: backspace management

TLX DS COM PL7 xxE

259

Character mode language objects

260

TLX DS COM PL7 xxE

Communication via Uni-telway bus

Introduction

Aim of this part

What's in this part?

This part introduces the principles of configuring and using Uni-telway communication via PL7 software.

This Part contains the following Chapters:

Chapter

Chaptername

General

Configuring a Uni-telway communication

Programming a Uni-telway communication

Debugging a Uni-telway communication

Language objects associated with Uni-telway communication

Page

TLX DS COM PL7 xxE

261

Uni-telway Communication

262

TLX DS COM PL7 xxE

General

Introduction

Aim of this

Chapter

What's in this

Chapter?

This Chapter introduces communication via the Uni-telway bus and its services.

This Chapter contains the following Maps:

Topic

Introduction

Compatibility

Performance

Operating mode

Addresses of a slave PLC

Page

263

TLX DS COM PL7 xxE

Uni-telway Communication: General

Introduction

Introduction

Associated manuals

Communication via Uni-telway is used to exchange data between all the devices connected to the bus. The Uni-telway standard is a UNI-TE protocol which creates a hierarchical structure ( i.e. a master and several slaves). The master device is the bus manager

Uni-telway allows devices to communicate on an equal footing, and authorizes messages to be sent from: l l l master to slave, slave to master, slave to slave.

If you require further information you should consult the following manuals:

Title Description

Uni-telway Bus Communication – User Guide Detailed description of communication using Uni-telway.

X-WAY Communication – Reference Manual Detailed description of UNI-TE messaging

TSX Micro PLCs - Installation manual Hardware installation

Premium TSX PLCs - Installation manual Hardware installation

264

TLX DS COM PL7 xxE

Uni-telway Communication: General

Compatibility

Hardware

Software

This type of communication is available for: l l l

TSX Micro and TSX Premium PLCs via the Terminal port associated with the

RS485 physical layer,

TSX Premium via: l a PCMCIA TSX SCP 111 card associated with the RS232 physical layer, l l a PCMCIA TSX SCP 112 card associated to 20 mA current loops, a PCMCIA TSX SCP 114 card associated with physical layers RS422 and l

RS485, a Built-in Link with TSX SCY 21600 / 21601 modules, associated with physical layer RS485,

TSX Micro PLCs supporting the PCMCIA cards mentioned above.

The Terminal port on TSX Premium and TSX Micro processors allows: l processing in Uni-Telway mode, mastering: l 4 messages transmitted to the bus, l 4 received messages, processing in Uni-Telway mode, as a slave of: l l l

4 transactions at server address Ad0,

4 transactions at server address Ad1, l 4 receptions at application address Ad2.

For communication via a Terminal port, the maximum frame size is 128 bytes per communication function.

PCMCIA cards and the link built into TSX SCY 21600/21601 modules authorizes: l processing in Uni-Telway mode, mastering: l l 8 messages transmitted to the bus, l 8 received messages, processing in Uni-Telway mode, as a slave of: l 6 transactions at server address Ad0, l l

1 transactions at server address Ad1,

8 receptions at application address Ad2.

For communication via a PCMCIA card or built in link, the maximum frame size is

240 bytes per communication function.

The READ_VAR communication function can read up to 1000 consecutive bits in any remote device. To read in excess of 1000 bits, the SEND_REQ communication function must be used.

Note: TSX Nano, TSX Micro and TSX Premium PLCs cannot send more than

1000 bits after a read request.

TLX DS COM PL7 xxE

265

Uni-telway Communication: General

Performance

Introduction

Time with

PCMCIA cards

The following tables are used to assess the typical exchange time in Uni-telway mode for: l l

PCMCIA cards and the built-in link on TSX SCY 21600/21601 modules, the terminal port.

The results shown correspond to the average time (in ms) for the READ_VAR function to be executed.

Number of objects read: 1 word

Speed in bits/s T cycle in ms

4800

9600

19200

19200 cyclic

50 cyclic

180

107

167

Average time

TSX SCP 114

131

160

107

Number of objects read: 100 words

Speed in bits/s T cycle in ms

4800

9600

19200

19200 cyclic

50 cyclic

710

363

373

402

Average time

TSX SCP 114

620

640

213

214

249

200

110

120

190

Average time

TSX SCY 21600/21601

152

172

130

730

387

395

428

Average time

TSX SCY 21600/21601

638

660

230

240

272

266

TLX DS COM PL7 xxE

Time with terminal port

Uni-telway Communication: General

Exchange times for TSX Micro PLCs

Transmission speed = 9600 bits/s, number of objects read = 40 words

T cycle in ms

100

255

Average time

205

213

258

299

457

Exchange times for TSX Premium PLCs

Transmission speed = 19200 bits/s, number of objects read = 40 words

T cycle in ms

100

255

Average time

135

150

185

210

340

Recommendations for use

To improve the performance of a slave device connection phase on Uni-telway, you are recommended to configure the number of slaves in relation to the number of slaves present, and to choose addresses starting from 1.

TLX DS COM PL7 xxE

267

Uni-telway Communication: General

Operating mode

Introduction

General graph

The following graph describes the operating modes for Uni-Telway PCMCIA cards, for the built-in link on TSX SCY 21600/21601 modules and the terminal port.

The operating mode is as follows:

Module stopped

Power up

Module off

Operation

Module configured

Communication function

Module in self-test phase

Reset

Module not configured Self-tests OK

Configuration l l l l after power-up the module self-tests. During this phase the warning indicators flash.

if there is no PL7 application in the PLC, the module remains in await configuration mode.

if there is a PL7 application in the PLC, the application configuration is sent to the module, which then starts.

in case of power outage, the PLC processor performs a warm restart. The module then re-launches its self-test procedure.

268

TLX DS COM PL7 xxE

Uni-telway Communication: General

Addresses of a slave PLC

At a Glance

Address Ad0

Address Ad1

Address Ad2

Usage constraints l l l

A slave PLC can have up to three Uni-telway addresses: a server address Ad0, a client application address Ad1, a listening application address Ad2.

A server address, called Ad0, is obligatory and coded in the configuration. It enables

'access to the PLC system' for adjustment, diagnostic or reading functions or ' writing variables, program loading and unloading,..)

A client application address, called Ad1, is supplied optionally by the slave coupler configuration. This enables ' requests or messages requiring a response or not to be sent to another device connected on the Uni-telway bus.

A listening application address, called Ad2, is supplied optionally by the slave coupler configuration. This enables Unsolicited Data (16#FC) requests to be received from 'another device connected on the Uni-telway bus.

Addresses Ad1 and Ad2 are consecutive to the address Ad0 (Ad1 = Ad0 + 1 and

Ad2 = Ad0+2).

Example

Uni-telway liaison address

Ad0 = 6

Ad1 = 7

Ad2 = 8

Logical entities

System responds to questions

Client application sends questions to a Uni-telway server device

Listening application receives the request "Unsolicited

Data" made to the application

Note: when the Uni-telway master is an SCM (series 7 PLCs), the application contained in the master must use the destination slave address (TSX Micro,

Premium) increased by 100 (16#0064).

TLX DS COM PL7 xxE

269

Uni-telway Communication: General

270

TLX DS COM PL7 xxE

Configuring a Uni-telway communication

Introduction

Aim of this

Chapter

What's in this

Chapter?

This Chapter describes the Configuration process for setting up a Uni-telway communication.

This Chapter contains the following Maps:

Topic

How to access Uni-telway PCMCIA card parameters

How to access terminal port parameters

How to access TSX SCY 21600/21601 module parameters

Uni-telway link configuration screen

Functions accessible using Uni-telway

Uni-telway parameters linked to the application

Uni-telway parameters linked to transmission

Page

TLX DS COM PL7 xxE

271

Uni-telway Configuration

How to access Uni-telway PCMCIA card parameters

Introduction

How to access the link

This operation describes how to access configuration parameters of the Uni-telway link via PCMCIA cards for TSX Premium PLCs.

The following table shows the procedure for accessing the Uni-telway link:

Step

Action

Access the communication channel configuration screen.

Select the communication channel from the drop-down menu CHANNEL 1

Example

CHANNEL 1:

CHANNEL 1

(Link not configured)

CHANNEL 1

(No PCMCIA submodule)

MAST

Select one of the following PCMCIA cards from the drop-down menu: l l l

TSX SCP 111 PCMCIA CARD RS232 MP

TSX SCP 112 PCMCIA CARD BC MP

TSX SCP 114 PCMCIA CARD RS485 MP

Example

CHANNEL 1

CHANNEL 1 TSX SCP 114 PCMCIA CARD RS485 MP

MAST

TSX FPP 20 PCMCIA FIPWAY CARD

TSX FPP 200 PCMCIA FIPWAY CARD

TSX FPP 10 PCMCIA FIPIO CARD

TSX MBP 100 PCMCIA MODBUS+ CARD

TSX MDM 10 PCMCIA MODEM CARD

FCS SCP 112 PCMCIA CARD BC MP

FCS SCP 114 PCMCIA CARD RS485 MP

Select the link from the drop-down menu UNI-TELWAY LINK:

Example

CHANNEL 1 TSX SCP 114 PCMCIA CARD RS485 MP

(Link not configured)

UNI-TELWAY LINK

MAST

MODBUS/JBUS LINK

272

TLX DS COM PL7 xxE

Uni-telway Configuration

How to access terminal port parameters

Introduction

How to access the link

This operation describes how to access the configuration parameters of the Unitelway link via the TSX Micro PLC terminal port.

The following table shows the procedure for accessing the Uni-telway link:

Step

Action

Access the communication channel configuration screen.

Select the link from the drop-down menu UNI-TELWAY LINK:

Example

CHANNEL 0:

CHANNEL 0 Terminal Port

UNI-TELWAY LINK

CHARACTER MODE LINK

MAST

TLX DS COM PL7 xxE

273

Uni-telway Configuration

How to access TSX SCY 21600/21601 module parameters

Introduction

How to access the link

This operation describes how to access the configuration parameters of the Unitelway link via TSX SCY 21600 / 21601 modules for TSX Premium.

The following table shows the procedure for accessing the Uni-telway link:

Step

Action

Access the communication channel configuration screen of the chosen module

Select the communication channel from the drop-down menu CHANNEL 0

Example

CHANNEL 0:

CHANNEL 0

(Link not configured)

CHANNEL 1

(No PCMCIA submodule)

MAST

3 Select the link from the drop-down menu UNI-TELWAY LINK:

Example

CHANNEL 0:

CHANNEL 0

(Link not configured)

UNI-TELWAY LINK

Built-in link

MAST

274

TLX DS COM PL7 xxE

Uni-telway Configuration

Uni-telway link configuration screen

Introduction

Illustration

This screen, split into two zones, is used to declare the communication channel and to configure the necessary parameters for a Uni-telway link.

The screen dedicated to Uni-telway communication looks like this:

TSX 3721 [POSITION 00.0..1]

Configuration

Designation: 3721 PROCESSOR

CHANNEL 1:

CHANNEL 1

UNI-TELWAY LINK

TSX SCP 114 PCMIA CARD RS485 MP

MAST

Type

Master

Event data

Number of slaves

0 Byte

Slave

Server Address (AD0)

Number of addresses

Current Loop (PSR)

Multidrop Point to point

Transmission Speed

9600 Bits/s

Wait timeout

Default 30 ms

Data

7 bits

8 bits

Stop

1 bit

2 bits

Parity

Even Odd Without

RTS/CTS delay

0 X100 ms Data carrier (DCD)

Elements and functions

This table describes the different zones that make up the configuration screen:

Address Zone

1 common

2 specific

Function

See Description of configuration screens for communication,

p. 166 .

Is used to select or complete the parameters of a Modbus link.

It is split into two types of information: l l the application parameters, the transmission parameters.

TLX DS COM PL7 xxE

275

Uni-telway Configuration

Functions accessible using Uni-telway

Introduction Depending on the chosen communication supports, some parameters cannot be modified. They appear grayed out.

Accessible functions

The summary table below shows the various choices possible:

Functions

Master - Event data

Master - Number of slaves

Slave

Current Loop (PSR)

Transmission speed

Wait timeout

Data / Stop

Parity

RTS/CTS delay

Carrier management (DCD)

SCP 111

Yes

Stop

Yes

SCP 112

Yes

Stop

Yes

SCP 114

Yes

Stop

Yes

SCY 21600/21601 Terminal Port

No No

Yes

Stop

Yes

276

TLX DS COM PL7 xxE

Uni-telway Configuration

Uni-telway parameters linked to the application

Introduction

Parameter type

Master function

Once the communication channel has been configured, complete the parameters dedicated to the application.

They are split into four windows: l l l l theType window, the Master window, the Slave window, the Current loop (PSR) window.

The window looks like this:

Type

Master

It is used to select the type of Uni-telway protocol used by the module: l l

Master: selects the choice of Uni-telway master,

Slave: selects the choice of Uni-telway slave.

The window can only be accessed by selecting Master as the type:

Master

Event data

Number of slaves

0 Byte

It can be used to enter: l l

Event data: is used to choose the number of bytes for Event data: l the default value is 0 bytes, l values are 0, 4 or 8 bytes.

the Slave Number: is used to select the number of slaves to be scanned by the master PLC: l values are between 0 and 98, l the default value depends on the communication channel: 31 for a PCMCIA card and built-in link, and 8 for the terminal port.

TLX DS COM PL7 xxE

277

Uni-telway Configuration

Slave function

Current loop function

The window can only be accessed by selecting Slave as the type:

Slave

Server Address (AD0)

Number of addresses

It can be used to enter: l the Server Address (Ad0): is used to choose the device's server address Ad0, l values are between 1 and 98 (for a PCMCIA card and built-in link), or between

1 and 8 (for the terminal port), l l the default value is 1.

the Address Number: is used to assign up to three slave addresses to one device. This option is available, for example, to programmable controllers which can use Server addresses (Ad0), Client addresses (Ad1), and Listen application addresses (Ad2), l values are between 1 and 3 (1 for Ad0 only, 2 for Ad0 and Ad1, 3 for Ad0, Ad1 l and Ad2), the default value is 1.

The window looks like this:

Current Loop (PSR)

Multidrop Point to point

It is used to select a type of communication: l l

Multidrop (in current loop),

Point to point (in current loop).

278

TLX DS COM PL7 xxE

Uni-telway Configuration

Uni-telway parameters linked to transmission

Introduction

Transmission speed

Wait timeout

Data

Once the communication channel has been configured, complete the parameters dedicated to transmission.

They are split into six windows: l l l l l the Transmission speed window, the Wait timeout window, the windows specific to Data and Stop, the Parity window, the RTS/CTS delay window.

The window looks like this:

Transmission Speed

9600 Bits/s

It is used to select the transmission speed for the Uni-telway protocol used by the l l l module: the default speed is 9600 bits/s, the available speeds are 1200, 2400, 9600 and 19200 bits/s, speeds of 300 and 600 bits/s are only available with the TSX SCP 111 PCMCIA card.

The window looks like this:

Wait timeout (ms)

Default 30

This parameter can be used to set the timeout in milliseconds, at the end of which the destination station will be considered missing if there is no response.

l values are between 1 and 255 (for the terminal port), or between 1 and 65000 ms

(for a PCMCIA card and built-in link), l the default value is 30 ms.

The window looks like this:

Data

7 bits

8 bits

The Data field sets the type of coding used to communicate on Uni-telway. All characters are coded on 8 bits.

TLX DS COM PL7 xxE

279

Uni-telway Configuration

Stop The window looks like this:

Stop

1 bit

2 bits

The Stop field is used to set the number of stop bits employed for communicating on Uni-telway. Possible values are 1 or 2 stop bits

Note: The default value is 1 stop bit.

Parity

RTS/CTS delay

The window looks like this:

Parity

Even Odd Without

This field is used to define the addition or non-addition of a parity bit, and its type.

The possible values are Even, Odd or none (Even by default).

The window looks like this:

RTS/CTS delay

1 X100 ms Data carrier (DCD)

Before each character string transmission, the module activates the RTS signal, and waits for the CTS signal to be activated.

It can be used to enter: l the maximum waiting time between the two signals. If this time has elapsed, the request is not sent onto the bus.

l l l l l the value is expressed in milliseconds, the default value is 0 ms, the value is between 0s and 10 s, the value 0 specifies the absence of delay management between the two signals.

data carrier management (DCD signal) in the event of communication with a controlled carrier modem. .

l if the option is selected, character reception is only enabled if the DCD carrier signal is detected, l if the option is not selected, all the characters received are taken into account.

280

TLX DS COM PL7 xxE

Programming a Uni-telway communication

Introduction

Aim of this

Chapter

What's in this

Chapter?

This Chapter describes the Programming process for setting up a Uni-telway communication.

This Chapter contains the following Sections:

Section

18.1

18.2

18.3

18.4

18.5

Topic

Communication function

Master to slave exchange

Slave to master exchange

Slave to slave exchange

Event data

Page

TLX DS COM PL7 xxE

281

Hello! I am an AI chatbot specifically trained to assist you with the Schneider Electric PL7 Micro/Junior/Pro - Communication applications, volume 1 User Guide. I have thoroughly reviewed the document and can help you locate the exact information you need or explain the content in clear and simple terms. Whether you’re looking for guidance on specific features, troubleshooting steps, or general usage, feel free to ask your questions. The more details you provide about your concerns or needs, the more accurately and effectively I can assist you!

Assistant typing

Assistant is out of keyboard. Please, try again later.

11.2