Schneider Electric Diagnostic assistance software DIAG MMI 37, 5.2 User Guide

Preface

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Enhancements to DIAG version 5 compared to the previous version

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The main enhancements to DIAG, compared to the previous version, are as follows :

• Animation of remote I/O

• Recognition of compound symbols

• Display in floating point notation of values of double words DWi and CDWi and some

OFB objects

• New variables for OFB word extract bits

• Extension of variables to 21 characters

• Zoom on Ladder language function blocks

• Zoom on logic equations to OFB inputs from the PL7_DIAG family, with source recording

• Animation of OFB elements not identified in mnemonic form (only with a V5 station).

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Enhancements to DIAG version V52, compared to version V5

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The main enhancements to DIAG V52, compared to version V5, are as follows :

• DIAG can be used for operator dialogue applications running on the following target machines :

- TSX PCM module in the PLC station,

- CCX 77FP dialogue located at a distance from the PLC (or PC compatible).

• The station name is displayed in the bottom right hand corner of all DIAG option screens.

• Forced bits are indicated in the display screens in either Ladder Language or Literal

Language.

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1

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General Contents

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Section Page

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Presentation and setup 3

1.1

Functions offered

1.2

Configurations required

1.3

Equipment check

1.4

Installing the software

1.4-1 Preliminary operations

1.4-2 Installation procedure

4

5

3

4

5

5

1.5

Using the display screen 6

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Using DIAG 7

2.1

Configuring the software

2.2

Execution of the DIAG function in the foreground

2.3

Screen levels

7

8

9

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Displaying errors

3.1

Displaying errors

3.2

Displaying the extended comment

11

11

13

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OFB display

4.1

OFB display

4.2

Displaying objects for an equation programmed on an input

4.3

Displaying internal data and constants

4.4

Displaying the STATUS word

14

14

16

17

19

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Displaying the monitored equation

5.1

Displaying a Ladder language equation

5.2

Displaying the objects of a standard block in Ladder language

5.3

Displaying an equation in Literal language

20

20

22

23

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2

Presentation and Setup 1

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1.1

Functions offered

Experience shows that most failures in an automated system (about 90%) are first-level failures caused by sensors and actuators. These failures can easily be corrected by the operator, provided that their cause is known. This is the purpose of diagnostic

assistance software.

This manual describes the setup and use of PL7-3 diagnostic assistance software :

• DIAG, an option of the TXT L PL7 M37 V52E software which is designed for an operator dialogue environment.

This program monitors the application by means of optional function blocks which provide "diagnostic" functions. For further information, refer to the documentation on diagnostic OFBs (ref. TXT DM FBD V52E). The following services are available to the user :

• Error indication, in the form of alarms

• Availability of failure analysis functions :

- Display of the function block and the errors detected

- Display and real-time animation of the Literal statement or Ladder network being diagnosed

- Display of the extended comment associated with a mnemonic symbol

• Initialization of the OFBs, after correction of the errors.

The mnemonic symbols and associated comments are provided by the XTEL-SDBASE mnemonic symbol database.

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3

1 Presentation and Setup

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1.2

Configurations required

To use DIAG, two hardware configurations are needed :

• In the design phase, one of the following is required : an FTX... terminal or PC compatible, equipped with the OS/2 operating system, the X-TEL or MINI X-TEL

≥

V5 software workshop and PL7-MMI 37 version 52 man-machine interface design software.

• During operation, the following are required :

- A TSX PCM 27/37 (installed in a TSX 7 model 40 PLC) and a TSX PCX 27/37 process control terminal.

- A CCX 77FP operator dialogue terminal or PC compatible. This terminal supports the operator dialogue application of a remote TSX 7 model 40 PLC, with communication via the FIPWAY/ETHWAY network or FIPIO/UNI-TELWAY bus (see TXT DM PL7

M37 RT1 - section 2 Installation : software installation).

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1.3

Equipment check

The DIAG software package comprises :

• One 3 1/2" diskette

• A licence agreement

• This User's Manual, ref. TXT DM M37 DGN V52E.

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4

Presentation and Setup 1

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1.4

Installing the software

1.4-1 Preliminary operations

Before installing the software on the hard disk, always :

• Read the licence and guarantee certificates concerning the restrictions which apply to copying and installing the software

• Make a copy of the original diskette and only use the copy, so as to avoid accidental damage to the original diskette.

Important

The diskette is delivered write-protected. Do not change the position of the writeprotect tab on the diskette.

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1.4-2 Installation procedure

• The installation of DIAG must be preceded by the following operations :

1 Check that the TXT L PL7 M37 V52 operator dialogue design software is already

installed (refer to the corresponding documentation).

If this is the case, proceed to install the DIAG software. If this is not the case, first install the TXT L PL7 M37 V52 software (see corresponding documentation).

2 Close all work sessions in progress (see corresponding documentation).

Installing the DIAG software

• Open an OS/2 full screen session

• Insert the diskette into the disk drive

• Type the identification letter of the drive containing the diskette (a: or b:), and validate by <Enter>

• Once the correct prompt ([a:\] or [b:\]) is displayed, type install and validate by

<Enter>

• Follow the prompts displayed on the screen, and validate by <Enter>

• When the installation procedure is complete, and if it is the last one, check the configuration and validate by <Enter>

• Remove the diskette from the drive and return to X-TEL or MINI X-TEL using the command <Ctrl><Esc>.

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5

1 Presentation and Setup

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1.5

Using the display screen

DIAG uses four standard zones to display information on the screen :

1

2

3

4

1 Alarm zone. The zone displays in real time the contents of the alarm zone generated by the ALARMS task : time of the alarm, D if the alarm was generated by a diagnostic

OFB, * if the alarm must be acknowledged, the mnemonic symbol and its associated comment, and the total number of active alarms. For example :

17:05:43 D * VALVE6 Incorrect flow Alarms = 15

2 Action bar. Each action is associated with an <Si> function key. These keys can be found on TSX CPX 27/37 process control terminals (with TSX PCM 27/37 module) or on T CCX 77FP operator terminals. On a standard keyboard, these actions are accessed by simultaneously pressing keys <Shift> and <Fi>.

3 Diagnostic information zone (equation diagnosed, optional function block, internal data, STATUS word, etc).

4

Reminder of the general function keys which can be used with the current screen.

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6

Using DIAG 2

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2.1

Configuring the software

This operation is compulsory after each installation or reinstallation of DIAG software.

Once the DIAG software is installed, the dialogue application must be defined (1 to 4) as well as the type of target machine (TSX CPM, CCX 77FP or PC compatible) and configured. Refer to the PL7-MMI 37 manual section 3.1 : Selecting the target machine.

Once the selection has been made, the function DIAG PROCESS in PL7-MMI 37 must be declared and configured. The files generated are transferred to the target machine

(TSX DCM, CCX 77FP or PC compatible).

Declaring the DIAG PROCESS option

This operation is necessary for the DIAG PROCESS function to become a task which is recognized by the PL7-MMI 37 design software.

• Pull down the Utilities menu of the main PL7-MMI 37 screen and select Add option, which displays the list of options available.

• Select the option DIAG PROCESS. It then appears in reverse video.

• Validate the selection.

Configuring the DIAG PROCESS option

This operation enables :

1 Generation of the symbol database which will be transferred to the cartridge so that it can be used by the DIAG PROCESS function. The only symbols which will be selected are those which have the DIAGPCM criterion in XTEL-SDBASE.

2

Listing the system files which must be loaded in the cartridge for the DIAG tool. This list is specific to the PL7-3 application developed for that station.

Preliminary operations

Before proceeding with the configuration, check that :

• The PL7-3 application for the target PLC has been saved on disk with the default name : PL7_3

• At least one variable allocated by a mnemonic symbol by DIAGPCM exists in the

XTEL-SDBASE database.

Caution : Ensure that the PL7-3 application stored on disk is as up to date as the PLC application to be diagnosed.

To configure the DIAG PROCESS option, proceed as follows :

• Pull down the Creation menu of the main PL7-MMI 37 screen and select the

Configuration Manager. The following screen is displayed :

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7

2 Using DIAG

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• Select DIAG PROCESS : Configuration and confirm the selection by pressing OK.

At the end of the configuration press OK again and then quit the configuration manager. NB : If there are a large number of DIAGPCM type symbols, configuration may take a few minutes.

Creation of tables and transfer to the operator dialogue target machine

In order to use the DIAG PROCESS option, a new image of the operator dialogue application must be generated and transferred to the memory of the target machine (cartridge for the

TSX PCM module, hard disk for the CCX 77FP terminal or PC compatible). To do this under

PL7-MMI 37 :

• Pull down the Generation menu of the main PL7-MMI 37 screen and select Creation of tables

• Once the tables are created, pull down the Generation menu again, select Task

Selector and then select the DIAG PROCESS task

• Pull down the Transfer menu to load the image generated onto the target machine.

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2.2

Execution of the DIAG function in the foreground

There are three ways of displaying the DIAG PROCESS function in the foreground :

• From the list of alarms screen. To do this, the operator must select from this list the alarm to be diagnosed by using the "Select" item of the function key

<F4> - BANNER. Once the alarm is selected, the DIAG key starts the execution of the function in the foreground :

• from a graphic screen by using a function key "FOR" value "DIAG", defined in the design of the operator dialogue application

• from the Run-time manager screen by pressing <F10>.

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8

Using DIAG 2

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2.3

Screen levels

DIAG software has four levels of display screen :

• Display of alarms

• Description of the alarm

• Display of the monitored equation

• Display of an OFB.

1 Display of alarms

This function is not performed by DIAG itself, but by the ALARMS task or the graphic task :

• During operation, the ALARMS task monitors the alarm conditions defined by the configuration tables, so as to inform the operator of errors in the monitored process.

The operator can select an alarm on the screen showing the list of alarms and execute

DIAG in the foreground, in order to display more detailed information concerning the alarm displayed.

• A graphic screen, animated by the graphic task, can comprise a zone which displays the alarm banner. If the designer has provided a command in this screen which requests execution of DIAG in the foreground, the operator can diagnose this alarm.

2 Description of the alarm

The description of the selected alarm (extended comment associated with the symbol of the alarm variable) is displayed in the first DIAG screen.

3 Display of the monitored equation

If the symbol of the alarm variable is associated with an OFB of the type EVDGS,

MVDGS or TRDGS (with recording of the source), it is possible to display the diagnosed

Literal statement or Ladder network in real time.

4 Display of an OFB

If the selected alarm is associated with a diagnostic OFB, DIAG allows it to be displayed as follows :

• Display of the I/O and their states

• Display of the internal data and constants

• Display of the status word.

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9

2 Using DIAG

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1

GRAPHIC SCREEN LIST OF ALARMS SCREEN RUN MANAGER SCREEN

Alarms in the banner

DIAG

∇

∇

LADDER ANIMATION

SCREEN

(Section 5.1)

Selection of an alarm in the list

∇

∇

ALARM DESCRIPTION

SCREEN (Section 3.1)

Selection of DIAG

∇

Foreground display of DIAG

2

∇

S3 = Status

∇

S1 = Diag

∇

∇

LITERAL ANIMATION

SCREEN (Section 5.3)

3

∇

S1 = Diag

∇

S6 = Disp-obj

∇

S6 = Disp-obj

∇

S1 = Diag

∇

OFB OBJECTS

∇

ANIMATION SCREEN

(Section 5.2)

∇

S1 = Diag

∇

S5 = Ofb-control

∇

S6 = Disp-obj

∇

OFB DISPLAY

SCREEN (Section 4.1)

S6 = Disp-obj

4

S7 = Data

∇

S1 = Diag S3 = Status

∇ ∇

ANIMATION SCREEN FOR

∇

INTERNAL DATA STATUS DISPLAY

OBJECTS OF AN EQUATION

SCREEN (Section 4.3) SCREEN (Section 4.4)

PROGRAMMED ON AN

OFB INPUT (Section 4.2)

∇ ∇

S7 = Constants S6 = Disp-obj

∇ ∇

∇

∇

INTERNAL To the screen

To the screen of a

CONSTANTS SCREEN of an object program equation

(Section 4.2) adjustment tool display tool

PL7 (ADJUST)

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1 0

Displaying errors 3

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3.1

Displaying errors

In normal use, DIAG is executed in the foreground, after the operator has selected an error on the List of alarms screen of the alarm function. This function displays the summary list of alarms as well as the alarm banner which indicates one of the following, as selected by the operator : the first active alarm, the last active alarm, the alarm with the highest priority, or the first alarm which has not been acknowledged.

To execute the DIAG task in the foreground :

<F4> Banner Selects the SELECT option, which displays the cursor on the screen.

Move the cursor onto the alarm message to be diagnosed.

<Funct.> Diag

1

Starts execution of the DIAG task in the foreground, which displays the following screen (Description of the alarm).

1 The function key associated with Diag is defined by the user in the

PL7-MMI 37 configuration manager.

This is the first DIAG screen. It displays the following information :

• The alarm on which the operator has started the DIAG program : date and time of appearance of the alarm, its mnemonic symbol and associated comment

• The name of the station on which the diagnosis is performed

• The description of the alarm, ie the extended comment associated with the alarm symbol. The up and down arrows enable display of the whole of the text.

• If the alarm has been generated by a diagnostic OFB, the first high-priority bit of the

STATUS word which has been set to 1.

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1 1

3 Displaying errors

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[S1 = Diag] If the alarm was detected by a diagnostic OFB with recording of the source (EVDGSi, MVDGSi, TRDGSi), this key is used to display the diagnosed Literal statement or Ladder diagram (see section 5).

If the alarm was detected by a diagnostic OFB without recording of the source (EVDGNi, ANADGi, AEMDGi,etc), this key is used to display the OFB (see section 4.1).

[S3 = Status] If the alarm was detected by a diagnostic OFB, this key can be used to display the STATUS word of the OFB (see section 4.4).

[S5 = iNi-ofb] If the alarm was detected by a diagnostic OFB and if the INIT input of the OFB is not used by the application (the program has priority), this key initializes the OFB.

<F3> Returns to the screen which started the execution of DIAG in the foreground : list of alarms screen, graphic or Task Manager screen.

<F10>

<

↑

><

↓

>

<F7>

<F8>

Activates the action bar.

Used for line by line scrolling of the text in the extended comment.

Used to display the previous page of the extended comment.

Used to display the next page of the extended comment.

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1 2

Displaying errors 3

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3.2

Displaying the extended comment

In certain DIAG software screens, when the command [S4 = Info] is in the action bar, it is possible to display (if it exists) the extended comment associated with the mnemonic symbol selected by the cursor. For this purpose DIAG uses a window which appears in the center of the current screen.

The extended comment for a given mnemonic symbol will have been entered previously in the XTEL-SDBASE mnemonic symbol database.

<F7>

<F8>

<

↑

><

↓

>

<Esc>

Used to display the previous page of the extended comment.

Used to display the next page of the extended comment.

Used to scroll the text in the extended comment, within the window.

Clears the screen window.

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1 3

4 OFB display

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4.1

OFB display

For a selected OFB, this screen displays :

• The symbol and comment for the OFB ERROR output, in the upper part of the screen

• The graphic representation of the OFB and the animation of its inputs and outputs, in the center of the screen

• The first high-priority bit of the STATUS word, set to 1, in the lower part of the screen.

For some STATUS word bits, this priority is set by the OFB designer.

[S1 = Diag] If the cursor selects an OFB input which is programmed with an equation, this key displays a screen which enables the user to access any object in this equation (see section 4.2).

[S2 = Base] Displays the pulldown menu which lets the user change the display base for the object selected by the cursor :

• Decimal (for example 1027)

• Hexadecimal (for example H'403')

• Floating point (for example -1.234567E+10).

[S3 = Status] Used to display the OFB STATUS word (see section 4.4).

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1 4

OFB display 4

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[S4 = Info] Displays the extended comment, if it exists, for the symbolic object wired to the OFB and selected by the cursor.

If the input or output to the OFB selected by the cursor is not wired, the [S4 = Info] key will not operate.

This key is also inoperative if the input to the OFB selected by the cursor is wired with a Boolean or arithmetic expression.

[S5 = iNi-ofb] Initializes the displayed OFB if its INIT input is not used by the application (the program has priority).

[S6 = Disp-obj] Gives access to the actions which display the object selected by the cursor :

• [S1 = Adjust-Object] displays an adjustment screen for the object selected by the cursor :

ADJUST option

• [S2 = Disp-Program] displays in real-time animation the program equations in which the object selected by the cursor occurs : VISUDYN option.

[S7 = dAta]

<

←

><

→

<

↓

><

↑

>

>

Enables direct access to the display of internal data for the selected

OFB (see section 4.3).

Move the cursor onto the various OFB inputs and outputs.

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1 5

4 OFB display

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4.2

Displaying objects for an equation programmed on an input

For the selected OFB input, this screen displays :

• The name of the input and the logic equation programmed on this input, in the upper part of the screen

• The symbol, variable and real-time value for all the equation objects, in the lower part of the screen.

[S2 = Base]

[S4 = Info]

Displays a pulldown menu which lets the user change the display base of the object selected by the cursor :

• Decimal (D or S1)

• Hexadecimal (H or S2)

• Logic (L or S3)

• Message (M or S4)

• Floating point (F or S5).

Displays the extended comment, if it exists, of the symbolic object selected by the cursor (see section 3.2).

[S6 = Disp-obj] Accesses the actions which let the user display the object selected by the cursor (see description of sub-menu in section 4.1).

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1 6

OFB display 4

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4.3

Displaying internal data and constants

Internal data display screen

This screen displays all the internal data of the selected OFB : name, type, display base and value. Only bit, word or double word type data is displayed.

[S2 = Base] Displays a pulldown menu which lets the user change the display base of the internal data selected by the cursor :

• Decimal (D or S1)

• Hexadecimal (H or S2)

• Logic (L or S3)

• Message (M or S4)

• Floating point (F or S5).

[S7 = Constants]

Accesses the display screen for the internal constants of the OFB

(see next screen).

<

↓

><

↑

> Move the cursor between the various OFB internal data.

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1 7

4 OFB display

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Internal constants display screen

This screen displays the internal constants of the selected OFB : name, type, display base, value and upper and lower limit values. If the current value is outside the range defined by the minimum and maximum values, an exclamation mark (!) is displayed at the end of the line.

[S2 = Base]

<

↓

><

↑

>

Displays a pulldown menu which lets the user change the display base of the internal constant selected by the cursor :

• Decimal (D or S1)

• Hexadecimal (H or S2)

• Logic (L or S3)

• Message (M or S4)

• Floating point (F or S5).

Move the cursor between the various OFB internal constants.

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1 8

OFB display 4

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4.4

Displaying the STATUS word

This screen displays in real time all the bits in the STATUS word of the selected OFB.

For bits at 1, it displays the associated error in plain language.

High-priority information bits are indicated by an asterisk at the start of the line.

In cases where the bit description file is missing, pressing <F9> (Continue) displays the value of each bit. These bits are animated, but no descriptive message is associated with them.

[S4 = Info] Displays the extended comment, if it exists, associated with the mnemonic symbol for the STATUS word bit selected by the cursor

(see section 3.2).

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1 9

5 Displaying the monitored equation

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5.1

Displaying a Ladder language equation

This screen can only be accessed if the selected OFB allows recording of the source of the diagnosed equation (EVDGSi, MVDGSi, TRDGSi).

The contacts and coils, which are controlled by bit type objects, are animated. If a contact or coil is forced to a state, F is displayed below the contact or the coil.

Remark

On a V4 station, the bit type objects of an OFB which have not been allocated a mnemonic symbol or which are indexed are not animated. They are displayed with a question mark. This is no longer the case on a V5 station.

DIAG provides a selection cursor in the Ladder network which the user can position on the basic elements of the equation : contacts, coils, operation blocks, comparison blocks, etc. Horizontal and vertical arrows are used to move the cursor onto a given object. The information relating to the object selected by the cursor : variable, mnemonic symbol and comment, is displayed in a zone at the bottom of the screen.

If the cursor selects a function block, this zone displays the message "Block selected".

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2 0

Displaying the monitored equation 5

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[S1 = Diag] If the object selected by the cursor is an OFB object, this key displays the source associated with the OFB (see sections 5.1 and 5.3) or the

OFB if there is no source associated with it (see section 4.1). This allows the user to cascade up to 10 levels of OFBs.

If the cursor selects a function block, this key accesses a screen which lists the objects contained in the function block (see section 5.2).

[S4 = Info] Displays the extended comment, if it exists, of the symbolic object selected by the cursor (see section 3.2).

[S5 = Ofb-control] Accesses the display screen for the OFB whose source is displayed

(see section 4.1).

[S6 = Disp-obj] Accesses actions for displaying an object selected by the cursor :

• [S1 = Adjust-Object] displays an adjustment screen for the object selected by the cursor : ADJUST option

• [S2 = Disp-Program] displays in real-time animation the program equations, in which the object selected by the cursor occurs :

VISUDYN option.

<

↓

> <

↑

> <

←

> <

→

>

Move the cursor between the various objects.

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2 1

5 Displaying the monitored equation

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5.2

Displaying the objects of a standard block in Ladder language

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For the selected standard block : function block, operation block or comparison block, this screen displays :

• The type of block and the logic equation it contains, in the upper part of the screen

• The mnemonic symbol and the comment associated with the object selected by the cursor, in the list of equation objects, in the center of the screen

• In the lower part of the screen, the mnemonic symbol, variable and real-time value of each object in the equation. If a bit is forced to a state, F is displayed on the appropriate line.

[S1 = Diag]

[S2 = Base]

If the object selected by the cursor is an OFB object, this key displays the OFB or the source associated with the OFB. This allows the user to cascade up to 10 levels of OFBs.

Pulls down a menu which lets the user change the display base of the object selected by the cursor : Decimal (D or S1), Hexadecimal (H or

S2), Logic (L or S3), Message (M or S4) or Floating point (F or S5).

[S4 = Info] Displays the extended comment, if it exists, of the symbolic object selected by the cursor (see section 3.2).

[S5 = Ofb-control] Accesses the display screen for the OFB which records the source of the selected standard block (see section 4.1).

[S6 = Disp-obj] Accesses actions which display the object selected by the cursor (see description of the sub-menu in section 4.1).

< ↓ >< ↑ > Move the cursor between the various objects.

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2 2

Displaying the monitored equation 5

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5.3

Displaying an equation in Literal language

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This screen can only be accessed if the selected OFB allows recording of the source of the monitored statement (EVDGSi, MVDGSi, TRDGSi).

This statement is displayed in the upper part of the screen. Its objects are animated in the lower part of the screen. For each object, this screen shows the display base, the animated value, the mnemonic symbol and F for a forced bit object. The comment associated with the object selected by the cursor is displayed in the center of the screen.

[S1 = Diag] If the object selected by the cursor is an OFB object, this key displays the OFB or the source associated with the OFB. This allows the user to cascade up to 10 levels of OFBs.

[S2 = Base] Pulls down a menu which allows the user to change the display base of the object selected by the cursor : Decimal (D or S1), Hexadecimal

(H or S2), Logic (L or S3), Message (M or S4) or Floating point (F or

S5).

[S4 = Info] Displays the extended comment, if it exists, of the symbolic object selected by the cursor (see section 3.2).

[S5 = Ofb-control] Accesses the display screen for the OFB whose source is displayed

(see section 4.1).

[S6 = Disp-obj] Accesses actions which display the object selected by the cursor (see description of the sub-menu in section 4.1).

<

↓

><

↑

> Move the cursor between the various objects.

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2 3

5 Displaying the monitored equation

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2 4