Machine and plant
diagnostics with
ProDiag
TIA Portal, SIMATIC S7-1500 CPU
https://support.industry.siemens.com/cs/ww/en/view/109740151
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Machine and plant diagnostics with ProDiag
Article ID: 109740151, V6.0, 09/2023
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Table of contents
Table of contents
Legal information .............................................................................................................................. 2
1
2
Introduction ............................................................................................................................. 4
1.1
Overview .................................................................................................................... 4
1.2
Principle of operation ................................................................................................. 5
1.3
Components used...................................................................................................... 7
Engineering ............................................................................................................................. 8
2.1
Hardware setup ......................................................................................................... 8
© Siemens AG 2022 All rights reserved
2.2
Configuration ............................................................................................................. 8
2.2.1
Create ProDiag function blocks ................................................................................. 8
2.2.2
Define supervision settings on the ProDiag FB .......................................................10
2.2.3
SIMATIC ProDiag supervision icons as of TIA Portal V17 ......................................11
2.2.4
Create global supervisions ......................................................................................12
2.2.4.1 Operand supervisions ..............................................................................................12
2.2.4.2 Position supervisions ...............................................................................................13
2.2.5
Create local supervisions ........................................................................................14
2.2.5.1 Action supervisions ..................................................................................................15
2.2.5.2 Reaction supervisions .............................................................................................16
2.2.6
Create supervisions on PLC data type ....................................................................17
2.2.7
Instancing PLC data type supervisions ...................................................................18
2.2.8
Assign ProDiag FB to the instance data block of an FB .........................................19
2.2.9
Poll error bits in the program ...................................................................................20
2.2.10 Multiple selection for defining supervisions .............................................................21
2.2.11 Create supervisions in the GRAPH sequence chain ...............................................22
2.2.11.1 Interlock ...................................................................................................................22
2.2.11.2 Supervision ..............................................................................................................23
2.2.12 Configure multilingual names in S7 GRAPH ...........................................................24
2.2.13 Setting initial value acquisition of the GRAPH sequence chain ..............................25
2.2.14 Reset initial values at GRAPH FB ...........................................................................26
2.2.15 Setting parameters of the GRAPH sequence chain ................................................28
2.2.16 Define ProDiag supervision settings........................................................................28
2.2.17 Sample supervision type error message with accompanying value ........................31
2.2.17.1 Specific text field: Enter accompanying values via context menu (text list
name) .......................................................................................................................32
2.2.17.2 Specific text field: Enter accompanying values via context menu (text list ID) .......34
2.2.17.3 Specific text field: Enter associated value without context menu ............................36
2.2.18 Configure identical time stamps ..............................................................................37
2.2.19 Export/import supervision settings for ProDiag and S7 GRAPH .............................39
2.2.20 Export and import ProDiag supervisions and properties of a ProDiag FB ..............40
2.3
3
Download project .....................................................................................................41
Appendix ................................................................................................................................42
3.1
Service and support .................................................................................................42
3.2
Industry Mall ............................................................................................................43
3.3
Links and literature ..................................................................................................43
3.4
Change documentation ...........................................................................................43
Machine and plant diagnostics with ProDiag
Article ID: 109740151, V6.0, 09/2023
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1 Introduction
1
Introduction
1.1
Overview
Starting in the TIA Portal Version V14, you have the option of supervising your machine or plant
using the ProDiag functionality and intervening in case of a fault. The supervision alarms that
you can create for different kinds of faults give you specific information on the supervision type,
on the location and cause of the fault. You can also output notes on the removal of the
determined faults. This means you cannot only detect faults, but you can also identify a possible
risk of error in advance and take appropriate countermeasures.
This application example demonstrates a fictional conveyor belt system with two lifts, realized in
WinCC V8. The belt transports crates to each of the two lifts in alternation, where they are then
stacked up. The conveyor belt system is controlled with an operator device (HMI) and monitored
with ProDiag. The various supervisions can be simulated on the operator device, as well as
displayed.
© Siemens AG 2022 All rights reserved
Figure 1-1: System overview
This application example describes the following aspects:
•
Configuration of machinery and plant supervision with ProDiag.
•
Various supervision types.
•
Diagnostics of supervision errors on the operator device.
Advantage
The supervisions are not programmed with ProDiag, only configured. In this way, you can
monitor your machine and your plant without modifying the code of the user program.
You can diagnose machines and plants right at the operator device without a programming
device.
Automatic synchronization keeps all displays on the operator device continuously up-to-date.
Machine and plant diagnostics with ProDiag
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1 Introduction
1.2
Principle of operation
User program
The sequence for the fictional conveyor belt system and the simulation thereof are programmed
within the user program (WinCC V8). The program was created with the goal of displaying as
many properties of the machine and plant diagnostics as possible. This example considers the
user program as a given, so it will not be described in more detail.
Monitoring with ProDiag
ProDiag lets you create global and local supervisions. You can configure global supervisions on
Boolean tags inside a tag table, a global data block or an ARRAY data block. Local supervisions
can be configured on Boolean parameters of a function block. The user program is thus left
unchanged.
ProDiag provides various types of supervision. They are listed together with applications in the
Table below.
Table 1-1: Supervision types with ProDiag
© Siemens AG 2022 All rights reserved
Supervision type
Application in the example
Tag/parameter
Operand supervision
Monitors the compressed air and the
power supply when the conveyor belt
system is switched on.
SeqData [DB15]
"SeqData".compressedAir
"SeqData".powerVoltage
Interlock supervision
Monitors whether the interlock conditions
(e.g. lift door closed) are met for the
motion of the lift unit.
LiftCmd [FB190]
#interlockAuto
#interlockMan
Action supervision
Monitors whether the lift unit has left its
starting position within a specified time.
LiftCmd [FB190]
#sensorLiftUp
#sensorLiftDown
Reaction supervision
Monitors whether the lift unit has reached
its end position within a specified time.
LiftCmd [FB190]
#sensorLiftUp
#sensorLiftDown
Position supervision
Monitors whether a crate is removed from
a certain position on the belt when the
conveyor belt system is switched off.
SeqData [DB15]
"SeqData".newCase
"SeqData".sensorStop1
"SeqData".sensorStop2
"SeqData".sensorStop3
Error message
Issues a text-based message if the
specified frequency has been selected
too low or high. The corresponding text
from a text list will be displayed based on
the status.
"SeqData".freqError
Operand supervision
in PLC data type
Monitors whether a lift is being directed in
both directions simultaneously.
typeStartLift
•
startLiftUp
•
startLiftDown
In order to execute / turn on supervisions, you need to assign them to ProDiag FBs. You can
create ProDiag function blocks in the "PRODIAG (incl.IDB)" language using the "Add new block"
dialog. The ProDiag function block will be automatically called in the ProDiag organization block.
Machine and plant diagnostics with ProDiag
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1 Introduction
Note
A maximum of 100 ProDiag FBs can be used in one project. As of V2.0, you can assign up to
1000 supervisions to one ProDiag FB, allowing for greater ease of design from a technical
standpoint. In smaller plants without a plant hierarchy, you can combine all supervisions in a
single ProDiag monitoring block.
Monitoring with GRAPH
With the GRAPH programming language, supervisions have already been integrated within
each individual step. GRAPH provides two different supervision types. They are listed together
with applications in the Table below.
Table 1-2: Supervision types with GRAPH
© Siemens AG 2022 All rights reserved
Supervision type
Application in the example
Interlock
You can use an Interlock to program conditions which determine the
execution of individual actions. Actions of a step that are linked with
the Interlock will only be executed when the interlock condition is
met. If the interlock condition is not met, there will be an error. You
can create messages that will appear if this is the case. However,
the error has no effect on the transition to the next step.
In this example, we monitor for whether the door of the lift unit is
closed and the lift unit is free.
Supervision
A Supervision lets you program conditions with which you can
monitor an entire step. If the condition is met, an error will be
pending and the step remains active. That means that the sequence
chain will not switch to the next step.
In this example, we monitor only the steps in which the lift units are
in motion. If the motion has not been completed within a specified
time (step duration exceeded), then a message will be issued and
the step will remain active. Unlike with an Interlock, the Supervision
must be acknowledged.
Display in the runtime
The errors that occur in the fictional conveyor belt system are displayed and diagnosed in the
runtime. WinCC V8 provides various objects for this purpose. The Table below lists the objects.
Table 1-3: WinCC objects for displaying supervision errors
WinCC object
Application in the example
ProDiag overview
The "ProDiag overview" object shows the current status of the
configured supervisions. If an error occurs, the error type and the
error category will be displayed. You can open the "Alarm view" with
the integrated button.
GRAPH overview
The "GRAPH overview" object displays the following:
•
The current status.
•
The current step number.
•
The name of the step in the GRAPH sequence chain "LiftSeq".
•
Previous and next step.
In case of an error in the sequence, the affected step will be
displayed.
You can open the "Alarm view" or the "PLC code view" with the
buttons.
Alarm view
The ProDiag messages are displayed in the "Alarm view". You can
open the "PLC code view" for the selected message by clicking the
button.
Machine and plant diagnostics with ProDiag
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1 Introduction
WinCC object
1.3
Application in the example
PLC code view
The "PLC code view" object shows the current program status of
the selected ProDiag message or the GRAPH sequence chain
"LiftSeq". The object supports the programming languages LAD,
FDP and GRAPH. The PLC code view is possible for the following
supervision alarms:
•
With global supervisions, only for Interlocks.
•
With local supervisions, for all base supervisions on input
parameters.
Program changes are automatically detected and updated.
Criteria analysis
display
The "Criteria analysis display" object shows you the operands in the
user program that have errors when these errors triggered a
selected ProDiag or GRAPH message.
Components used
The following hardware and software components were used to create this Application
Example:
© Siemens AG 2022 All rights reserved
Table 1-4
Component
Quantity
Item number
Note
CPU 1516F-3 PN/DP
1
6ES7516-3FN01-0AB0
Alternatively, any other CPU from
the S7-1500 product family can
be used.
Memory card,
24 MB
1
6ES7954-8LF02-0AA0
-
STEP 7 Professional V18
1
6ES7822-1..08-..
-
WinCC V8
1
6AV6371-1..08-..
-
The listed components can be obtained from the Siemens Industry Mall, for example.
This application example consists of the following components:
Table 1-5
Component
File name
Note
Documentation PLC
109740151_ProDiag_PLC_DOC_V60_en.pdf
-
Documentation WinCC
V8
109740151_ProDiag_WinCCV8_DOC_V60_en.pdf
-
PLC Project
109740151_ProDiag_PLC_PROJ_V60.zip
-
WinCC V8 Project
109740151_ProDiag_WinCCV8_PROJ_V60.zip
-
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2
Engineering
2.1
Hardware setup
The following Figure shows the hardware setup of the application.
Figure 2-1: Hardware setup
SIMATIC
CPU 1516
SIMATIC
WinCC
PN PN DP
© Siemens AG 2022 All rights reserved
Note
The installation guidelines for the devices must be observed.
2.2
Configuration
2.2.1
Create ProDiag function blocks
A ProDiag FB is created in the PRODIAG programming language, for example with the "Add
new block" dialog.
Follow the steps below:
1. Double-click in the "Program blocks" folder on the command "Add new block".
The "Add new block" dialog opens.
2. Click the "function block" button.
3. Give the new ProDiag FB the name "LiftProDiagFB".
4. In this section, select "Language > PRODIAG (incl. IDB)".
5. To enter more properties of the new ProDiag function block, click "Additional information".
An area with further input fields is displayed.
6. Enter the desired properties.
7. Tick the box for "Add new and open" if you wish to open the ProDiag function block right
away.
8. Confirm your entries with "OK".
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© Siemens AG 2022 All rights reserved
Figure 2-2: "Add new block" dialog
Alternatively, you can also create ProDiag FBs in the following manner:
Note
•
When creating a global supervision, the ProDiag FB is created automatically. No user action
is required for this.
•
When calling an FB with local supervision.
•
On the instance data block of an FB.
•
In the ProDiag overview table.
You can structure your monitoring to match the machinery and plant units by creating a
ProDiag FB for each unit.
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2.2.2
Define supervision settings on the ProDiag FB
Global enabler
You can use the global enabler to control the call of the ProDiag FB in the ProDiag OB. The
global enabler must be a global Boolean tag. The ProDiag FB is only called if this tag has the
signal state "TRUE". This gives you granular control over the shutdown of all supervisions of the
ProDiag FB, for example.
Define a global enabler as follows:
1. Right-click on the ProDiag FB "LiftProDiagFB" and select "Properties..." from the context
menu.
The Properties dialog box of the ProDiag FB will open.
2. In the "General" tab, click on "Supervision settings".
3. Specify the global Boolean tag "SeqData".globalEnabler as the global enabler. (The
application example does not use the global enabler.)
© Siemens AG 2022 All rights reserved
Figure 2-3: "Global enabler" dialog
Note
You can also use the global enabler to prevent a message flood, for example.
Category enabler
Using the category enabler, you can activate and deactivate the supervisions for each individual
category of the ProDiag FB.
You will configure a category enabler in accordance with the global enabler.
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2.2.3
SIMATIC ProDiag supervision icons as of TIA Portal V17
SIMATIC ProDiag uses various supervision icons. These supervision icons tell you at a glance
which supervision you are looking at.
The round icons indicate instantiated supervisions.
The square icons indicate supervision definitions.
Table 2-1: SIMATIC ProDiag supervision icons
Icon
Meaning
This icon indicates a global supervision instance that was created directly in a tag table or
in a global DB.
This icon shows you instantiated type supervisions of PLC data types or function blocks.
This icon indicates that a type definition for a supervision was created directly in the block
interface of a function block or in a PLC data type.
© Siemens AG 2022 All rights reserved
This icon shows you inherited supervisions from PLC data types and function blocks (multiinstances).
Machine and plant diagnostics with ProDiag
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2.2.4
Create global supervisions
In the application example, global supervisions are created on Boolean tags in the global data
block "SeqData".
2.2.4.1
Operand supervisions
When the conveyor belt system is switched on, the compressed air supply must be ready for
operation. Otherwise, a supervision alarm in the "Error" category will be issued. In the
application example, the compressed air is monitored with the "SeqData".compressedAir tag.
Proceed as follows to create the operand supervision:
1. Open the global DB "SeqData".
2. Right-click the tag "SeqData".compressedAir and then click "Add new supervision".
3. Select "Operand" as the "Type of supervision".
4. In the event of an error, the monitored tag will have the state "False".
5. Set a "Delay time", e.g. 0 ms.
6. For "Condition 1", select the tag "SeqData".plantOn (conveyor belt system is switched on).
Tick the "True" checkbox for the condition trigger. If needed, you can add up to three
conditions.
© Siemens AG 2022 All rights reserved
7. Select "Error" as the "Category".
8. Select the ProDiag FB "LiftProDiagFB" that was created earlier. You can also create a new
ProDiag FB. An "Error flag" will be automatically created in the instance data block of the
ProDiag FB for the supervision. The error flag indicates whether an error has occurred. You
can query this error flag in your program, for example to switch off the machine in the event
of certain errors.
9. Under "Specific text field", enter the text "Compressed air not OK". For another input
sample, see:
Example for the Error message supervision type
Figure 2-4: Operand supervision
The supervision for the power supply, "SeqData".powerVoltage, is created in the same way as
the compressed air supervision.
Machine and plant diagnostics with ProDiag
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2.2.4.2
Position supervisions
When the conveyor belt system is at a standstill, it monitors whether a crate is removed from the
first position. If a crate is missing, a supervision alarm in the "Warning" category is issued. In the
application example, the tag "SeqData".newCase (sensor, crate present) is monitored for this
purpose.
Proceed as follows to create the position supervisions:
1. Right-click the tag "SeqData".newCase and then click "Add new supervision".
2. Select "Position" as the "Type of supervision".
3. In the event of an error, the monitored tag will have the state "False".
4. Set a "Delay time", e.g. 0 ms.
5. The conveyor belt system must be at rest. As the "Condition", select the tags
"SeqData".autoStarted (automatic operation started) and "SeqData".autoStopped
(automatic operation stopped). Tick the "False" checkbox for both for the trigger condition.
The tag "SeqData".stateCase[0] (status: crate present) must also be set. Tick the "True"
checkbox for the condition trigger.
© Siemens AG 2022 All rights reserved
6. Select "Warning" as the "Category".
7. Select the ProDiag FB "LiftProDiagFB" that was created earlier. You can also create a new
ProDiag FB. An "Error flag" will be automatically created in the instance data block of the
ProDiag FB for the supervision. The error flag indicates whether an error has occurred. You
can query this error flag in your program, for example to switch off the machine in the event
of certain errors.
8. Under "Specific text field", enter the text "Case at entrance missing".
Figure 2-5: Position supervision
The position supervision is carried out on the following stoppers in line with the position
supervision on "SeqData".newCase.
•
"SeqData".sensorStop1
•
"SeqData".sensorStop2
•
"SeqData".sensorStop3
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2.2.5
Create local supervisions
Local supervisions are created at the Boolean input parameters of the function block "LiftCmd".
The FB controls the outputs of a lift unit; it is called twice in the program. Thus, you only need to
configure the supervisions once. You can use them for both lift units.
Interlock supervisions
The outputs of the lift unit may only be set if the door of the lift unit is closed. Interlock
supervision monitors whether the enable signals required for the "Move lift unit upward" motion
are present and/or whether the door is closed. The enable signals are issued to the FB
parameter #interLockAuto (automatic interlock) when the "LiftCmd" FB is called. If the enable
signals are not all present, a supervision alarm of the "Error" category will be issued. In the
application example, the FB parameter #interLockAuto is monitored for this purpose.
Create the interlock supervision as follows:
1. Open the FB "LiftCmd".
2. Right-click the parameter #interLockAuto and then click "Add new supervision".
3. For "Type of supervision", select "Interlock".
4. In the event of an error, the monitored parameter has the state "False".
© Siemens AG 2022 All rights reserved
5. Set a "Delay time", e.g. 0 ms.
6. The "Actuator" #autoLift.startLiftUp (start moving lift unit upward) and the "Condition"
#autoStarted (automatic operation started) must be set. For both, tick the "True" checkbox
for the trigger of the condition.
7. Select "Error" as the "Category".
8. Under "Specific text field", enter the text "Door at lift not closed or lift blocked".
Figure 2-6: Interlock supervision
Interlock supervision for the motion "Lift unit upwards" and with the parameter #interLockMan
are created according to this interlock supervision.
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Note
With local supervisions, the ProDiag FB "LiftProDiagFB" is not assigned to the individual
parameters, but rather to the instance data block "InstMainFB" of the "MainFB" FB that
originates the call.
See chapter 2.2.8
2.2.5.1
Action supervisions
Action supervision checks whether the motion "Lift unit upwards" has left the starting position
within a specified time. If the lift unit remains stationary, a supervision alarm in the "Error"
category will be issued. In the application example, the FB parameter #sensorLiftDown (sensor:
lift unit downwards) is monitored for this purpose.
Create the action supervision as follows:
1. Right-click the parameter #sensorLiftDown and then click "Add new supervision".
2. Select "Action" as the "Type of supervision".
3. In the event of an error, the monitored parameter has the state "True".
4. Set a "Delay time", e.g. 200 ms.
© Siemens AG 2022 All rights reserved
5. The "Action" #outLiftUp (output: lift unit upwards) must be set. Tick the "True" checkbox for
the condition trigger.
6. Select "Error" as the "Category".
7. Under "Specific text field", enter the text "Lift has not left lower start position".
Figure 2-7: Action supervision
Action supervision for the motion "Lift downwards" is created according to this action
supervision.
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2.2.5.2
Reaction supervisions
Reaction supervision checks whether the motion "Lift unit upwards" has reached the end
position within a specified time. If the lift unit remains stationary before this, a supervision alarm
in the "Error" category will be issued. In the application example, the FB parameter
#sensorLiftUp (sensor: lift unit upwards) is monitored for this purpose.
Create the reaction supervision as follows:
1. Right-click the parameter #sensorLiftUp and then click "Add new supervision".
2. Select "Reaction" as the "Type of supervision".
3. In the event of an error, the monitored parameter has the state "False".
4. Set a "Delay time", e.g. 5000 ms.
5. The "Action" #outLiftUp (output: lift unit upwards) must be set. Tick the "True" checkbox for
the condition trigger.
6. Select "Error" as the "Category".
7. Under "Specific text field", enter the text "Lift has not reached upper end position".
© Siemens AG 2022 All rights reserved
Figure 2-8: Reaction supervision
Reaction supervision for the motion "Lift downwards" is created according to this reaction
supervision.
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2.2.6
Note
Create supervisions on PLC data type
For supervisions on PLC data types, you only have access to the "Operand" supervision type.
Since the fictional conveyor belt system has two lifts, a PLC data type has been created with the
tags "startLiftUp" and "startLiftDown" for starting the lift unit.
Operand supervision issues an error message if the lift unit is started in both directions at the
same time.
Proceed as follows to create the operand supervision:
1. Open the PLC data type "typeStartLift".
2. Right-click the tag "startLiftUp" and then click "Add new supervision".
3. Select "Operand" as the "Type of supervision".
4. In the event of an error, the monitored tag will have the state "True".
5. Set a "Delay time", e.g. 0 ms.
6. For "Condition 1", select the tag "startLiftDown". Tick the "True" checkbox for the condition
trigger.
7. Select "Error" as the "Category".
© Siemens AG 2022 All rights reserved
8. Under "Specific text field", enter the text "Lift is started in both directions.".
Figure 2-9: Operand supervision
Supervision of the tags "startLiftDown" will be created accordingly.
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2.2.7
Instancing PLC data type supervisions
Use in global data blocks and tag tables
If you use the PLC data type as a tag declaration in a global data block or a tag table, then the
supervisions will be instanced directly. The supervisions are marked with the
icon.
Figure 2-10: Use in global data block
Use in blocks
© Siemens AG 2022 All rights reserved
The ProDiag supervisions in PLC data types are supported in an FB, but only in the section
"Static".
If you use the PLC data type in the block interface of an FB in the "Static" section, then all
supervisions will be automatically instanced when the block is called. The supervisions are
marked with the
icon.
Figure 2-11: Use in FB
Note
If you use the PLC data type in an OB, FC or in an FB outside of the "Static" section in the
block interface, then the ProDiag supervisions contained therein will not be supported. The
following message will appear in the Inspector window:
"No ProDiag supervisions available"
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2.2.8
Assign ProDiag FB to the instance data block of an FB
The parameters subject to supervision in the interface of a block must be assigned to a ProDiag
FB via the instance of an FB.
Follow the steps below:
1. Double-click in the project tree on the folder "PLC supervisions & alarms".
The alarms and supervisions editor opens.
2. Click the tab "Supervisions > Supervision instances".
The instance data blocks will be displayed with all local supervisions.
3. Click the Extras button in the "ProDiag FB" column.
4. In the selection dialog, select the ProDiag FB "LiftProDiagFB" that was created earlier.
You can also create a new ProDiag FB.
© Siemens AG 2022 All rights reserved
Figure 2-12: Assign ProDiag FB
The ProDiag FB can also be assigned in the properties of the instance data block.
Follow the steps below:
1. Right-click on the instance data block "InstMainFB".
2. Click the "Properties" button in the context menu.
3. In the Properties dialog, click on "Attributes".
4. Under "Assigned ProDiag FB", select the ProDiag FB "LiftProDiagFB".
You can also create a new ProDiag FB here.
Figure 2-13: Assign ProDiag FB
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2.2.9
Poll error bits in the program
Poll the group error bit of a ProDiag FB
For each ProDiag FB, it is possible to poll various types of group error bits in the user program.
This can be done to halt the machine in case of certain faults, for example.
The group error bits are also accessible via the "InstLiftProDiagFB" instance data block of the
ProDiag FB.
There are two different types of group error bit:
•
Group error bit for the supervision types (All, O, I, R, A, P, Merr and Mtxt)
•
Group error bit for the categories (C1, C2, C3, C4, C5, C6, C7 and C8)
The following Figure shows the group error bit "All" in the data structure of the status tags in the
ProDiag IDB. The bit can be used in the user program.
© Siemens AG 2022 All rights reserved
Figure 2-14: Polling group error bit in the program
Poll error bit of a supervision
For each supervision, it is possible to poll an error bit in the user program. This can be done in
order to halt the machine in case of certain faults, for example. The error bits are accessible via
the "InstLiftProDiagFB" instance data block of the ProDiag FB.
The following Figure shows the error bit "Err" in the data structure of the operand supervision.
The bit can also be used in the user program.
Figure 2-15: Polling operand supervision error bit in the program
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2.2.10
Multiple selection for defining supervisions
You can create a large number of supervisions in the PLC tag table, in the interfaces of function
blocks, and in global data blocks with an operator action. Only Boolean tags will be considered.
Highlight the tags, for example those in the global data block, and select "Add new supervision"
from the context menu.
© Siemens AG 2022 All rights reserved
Figure 2-16: Multiple selection of supervisions
A supervision will be created for each highlighted tag. The "Supervisions" tab in the "Properties"
Inspector window will open for the first tag. Here you will create the settings for each individual
supervision separately.
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2.2.11
Create supervisions in the GRAPH sequence chain
With the GRAPH programming language, supervisions have already been integrated within
each individual step. Messages are generated here automatically.
2.2.11.1
Interlock
An Interlock lets you monitor the feasibility of an action. In this example, we monitor for whether
the door at the entrance to the lift unit is closed and the lift unit is not blocked. If the interlock
condition is not met, then a message will be issued.
Proceed as follows to enter a specific alarm text:
1. Open the step in the Single step view.
2. Select "Interlock -(C)-".
3. Open the Inspector window and select the "Properties" tab.
4. In the "Alarm text" field, enter the desired alarm text. This text will be added to the interlock
message with the alarm text field "<Step-specific text field>".
© Siemens AG 2022 All rights reserved
Figure 2-17: GRAPH Interlock
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2.2.11.2
Supervision
A Supervision lets you monitor an entire step. In this example, the step duration will be
monitored. If the specified step duration is exceeded, then a message will be issued and the
sequence chain will not advance to the next step.
Proceed as follows to enter a specific alarm text:
1. Open the step in the Single step view.
2. Select "Supervision -(v)-".
3. Open the Inspector window and select the "Properties" tab.
4. In the "Alarm text" field, enter the desired alarm text. This text will be added to the
supervision alarm with the alarm text field "<Step-specific text field>".
© Siemens AG 2022 All rights reserved
Figure 2-18: GRAPH Supervision
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2.2.12
Configure multilingual names in S7 GRAPH
The names of steps and transitions can be configured in multiple languages, allowing for
multilingual output of names in alarms, the PLC code view and in the GRAPH overview.
1. In the S7 GRAPH FB "LiftSeq" [FB12], highlight the step you wish to edit.
2. Open the "Properties" in the Inspector window.
3. In the "Texts" tab, you can assign names in multiple languages (the languages that are
enabled in the project).
© Siemens AG 2022 All rights reserved
Figure 2-19: Multilingual names in S7 GRAPH
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2.2.13
Setting initial value acquisition of the GRAPH sequence chain
Initial value acquisition lets you analyze the cause that triggered a supervision alarm. To do this,
we record the initial values of the operands in your program that are programmed upstream of
the supervised operands.
To activate initial value acquisition, proceed as follows:
1. Open the Properties of the GRAPH sequence chain "LiftSeq".
2. Update the version in the "General > Block" tab. In this example, the block version is V5.0.
3. Switch to the "Attributes" tab.
4. Enable "Initial value acquisition".
© Siemens AG 2022 All rights reserved
Figure 2-20: Attributes of the GRAPH sequence chain
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2.2.14
Reset initial values at GRAPH FB
With a GRAPH FB V5.0 or later, you can use the input parameter "RESET_CRIT" to reset the
signal state of the two static parameters "H_IL_ERR" (Interlock) and "H_SV_FLT" (Transition)
back to FALSE after the criteria analysis. In this way, no more old values will be displayed in the
HMI PLC Code Viewer. This is useful if you change the programming of interlocks and
transitions and no longer need the initial values that have thus become out-of-date. The signal
states are not automatically reset to FALSE by the programming change.
To reset the signal states of the two system-internal static parameters (and thus reset the initial
values), proceed as follows:
1. Make sure that the GRAPH function block has at least version 5.0.
2. Open the GRAPH FB "LiftSeq", click in the block interface, and select "Edit > Interface
parameters > Maximum interface parameters" from the menu bar.
© Siemens AG 2022 All rights reserved
Figure 2-21: Resetting initial values at the "RESET_CRIT" parameter
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3. Open the FB "MainFB" and right-click on the GRAPH FB.
4. Select "Update block call" from the context menu. After the update, the GRAPH FB "LiftSeq"
will be displayed with its maximum parameters.
5. When the GRAPH function block is called, interconnect the input parameter "RESET_CRIT"
in your user program with a Boolean tag such as "SeqData".resetCrit.
© Siemens AG 2022 All rights reserved
Figure 2-22: Resetting initial values at the "RESET_CRIT" parameter
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2.2.15
Setting parameters of the GRAPH sequence chain
In order for the program status of the GRAPH sequence chain to be displayed on the "GRAPH
overview" HMI object, the parameters of the GRAPH sequence chain must be visible in the HMI
as well as accessible from the HMI.
Proceed as follows to set it up:
1. Open the GRAPH sequence chain "LiftSeq".
2. Open the "Edit" menu.
3. Enable "Internal parameters visible/accessible from HMI".
Selecting this is only possible when the GRAPH sequence chain is opened in the editor and
in focus.
© Siemens AG 2022 All rights reserved
Figure 2-23: GRAPH sequence chain parameter settings
2.2.16
Define ProDiag supervision settings
In the ProDiag supervision settings, you will define the settings that apply to all supervisions in
the entire TIA Portal project. The ProDiag supervision settings can be found in the project tree
under "Common data".
Define categories
"Categories" allow you to divide pending errors into different urgency levels. The categories can:
•
either be issued as a part of a supervision alarm or as a group error bit in the "ProDiag
overview" object on an HMI device.
•
be adapted to your requirements; for example, you can assign each category its own
message class.
The dialog is located under "Common data > Supervision settings > General > Categories".
By default, there are three categories: "Error", "Warning" and "Info". In addition, you can create
and enable/disable five more categories.
The "Error" category cannot be disabled.
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Figure 2-24 Category settings
Define sub-categories
Sub-categories let you more finely differentiate the information within a supervision alarm.
© Siemens AG 2022 All rights reserved
Define default settings of the supervision types
You can change the default settings for the various supervision types in the "Type of
supervision" section. Here you can set the delay time as well as the signal state that an operand
or a condition will be monitored for.
Figure 2-25: Default settings of the supervision types
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Define ProDiag alarm texts
You can define the structure of the supervision alarms in the "Alarm text" section.
To create an alarm text, proceed as follows:
1. In the "Alarm text" tab, select the desired area for which you wish to create an alarm text,
for example "Basic supervisions > Tags".
2. Drag the desired alarm text fields from the "Supported alarm text fields" field and drop them
into the "Alarm text" text box.
You can change the order of the individual text fields at any time.
3. If you wish to delete a text field, then right-click the text field in question and select "Delete"
from the context menu.
4. Select a desired delimiter for the text fields.
© Siemens AG 2022 All rights reserved
Figure 2-26: Alarm text structure
You can define the alarm text structures of the various supervisions according to the Basic
supervisions. With local supervisions, insert the alarm text fields "<Instance name>" and
"<Parameter Name>" in place of "<Tag name>".
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2.2.17
Sample supervision type error message with accompanying value
With blocks that report errors and output a status, you can have error texts be issued in a
supervision alarm in case of an error.
In the example below, the "Frequency" FB checks the input frequency and outputs an error and
the following status (error number):
•
16#8001 (32769 decimal): Input frequency lower than 5.
•
16#8002 (32770 decimal): Input frequency greater than 10.
The texts are assigned to the values of a tag in the text list "TextListStatus". In order for the
error texts to be output in a supervision alarm based on the status, proceed as follows:
1. In the "SeqData" DB, define the tags "freqError" (data type: Bool) and "freqStatus" (data
type: UInt).
2. Interconnect the "error" and "status" parameters of the "Frequency" FB with the defined DB
tags. In the example, the FB is called in the FB "LiftSim".
© Siemens AG 2022 All rights reserved
Figure 2-27: Call and parameter assignment of the "Frequency" FB
3. In the "PLC1" folder in the project tree, open the text list editor by double-clicking on "PLC
alarm text lists".
4. Add a new text list and give it a name, for example "TextListStatus".
5. In the "Selection" column, select the setting "Decimal" for the text list.
6. In the "Range from / Range to" columns under "Text list entries", enter the status (error
numbers) used in the "Frequency" FB. Define the alarm texts under "Entry".
Figure 2-28: Adding text list
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7. Configure a supervision with the following properties for the DB tag:
–
Type of supervision: Error message:
–
Supervised tag: "SeqData".freqError
–
Delay time: T#0ms
–
Category: 1: Error
–
ProDiag FB: LiftProDiagFB (for example)
© Siemens AG 2022 All rights reserved
Figure 2-29: Supervision definition
2.2.17.1
Specific text field: Enter accompanying values via context menu (text list name)
1. In the field "Tag 1 (SD_4)", enter the DB tag "SeqData".frequency.
2. In the field "Tag 2 (SD_5)", enter the DB tag "SeqData".freqStatus.
3. In "Specific text field", enter the following strings:
–
Frequency value
–
Error message from Text List
Figure 2-30: Definition of the specific text field
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Add a dynamic parameter (tag)
1. Right-click behind the "Frequency value" text.
2. Click "Insert dynamic parameter (tag)…" in the context menu.
3. Under "Tag", select "Tag 1 (SD_4)".
4. Under "Display type", select "Floating-point" and confirm your entries.
In the event of an error, the error message will be issued with the current input frequency.
© Siemens AG 2022 All rights reserved
Figure 2-31: Adding a dynamic parameter (tag)
Add dynamic parameter (text list name)
1. Right-click behind the "...Text list" text.
2. Click "Insert dynamic parameter (text list name)…" in the context menu.
3. Under "Text list name", select the text list "TextListStatus".
4. Under "Tag for text list entry", select the "tag" "Tag 2 (SD_5)" and confirm your entries.
In the event of an error, the error message will be pulled from the error text list
"TextListStatus". The text selection depends on the tag "SeqData".freqStatus.
Figure 2-32: Adding a dynamic parameter (text list name)
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Result
Figure 2-33: Result of specific text field with accompanying values
Once the DB tag "freqError" assumes the signal state "TRUE", the supervision alarm will be
issued with the text from the specific text field. The accompanying value for the frequency (as a
floating-point number) and the error tect (from the text list) will also be displayed.
© Siemens AG 2022 All rights reserved
2.2.17.2
Specific text field: Enter accompanying values via context menu (text list ID)
The text list names can be changed. If the list name changes, the reference to the name will
stop working. Instead of the text list name, you can also use the automatically assigned text list
ID, which is immutable. To do this, assign the text list ID to a tag and use the tag in the context
menu as the tag for the text list ID.
The supervision configuration under "General" corresponds to Figure 2-29.
1. In the "Tag 1 (SD_4)" field, enter the DB tag "SeqData".textListID.
2. In the field "Tag 2 (SD_5)", enter the DB tag "SeqData".freqStatus.
3. In "Specific text field", enter the following strings:
–
Error message from Text list ID
Figure 2-34: Definition of the specific text field
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Add dynamic parameter (text list ID)
1. Right-click behind the "...Text list ID" text.
2. Click in the context menu on "Insert dynamic parameter (text ID)…"
3. Under "Tag for text list ID", select the tag "Tag 1 (SD_4)".
4. Under "Tag for text list entry", select the tag "Tag 2 (SD_5)" and confirm your entries.
In the event of an error, the error message will be pulled from the error text list
"TextListStatus". The text selection depends on the tag "SeqData".freqStatus.
© Siemens AG 2022 All rights reserved
Figure 2-35: Adding a dynamic parameter (text list name)
Result
Figure 2-36: Result of specific text field with accompanying values
Once the DB tag "freqError" assumes the signal state "TRUE", the supervision alarm will be
issued with the text from the specific text field. The accompanying value for the frequency (as a
floating-point number) and the error tect (from the text list) will also be displayed.
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2.2.17.3
Specific text field: Enter associated value without context menu
The supervision configuration under "General" corresponds to Figure 2-29.
1. In "Specific text field", enter the following accompanying values:
Error message from Textlist: @4%5X@: @4%t#TextListStatus@
In the event of an error, the error message will be pulled from the error text list
"TextListStatus".
2. In the "Tag 1 (SD_4)" field, enter the DB tag "SeqData".freqStatus.
© Siemens AG 2022 All rights reserved
Figure 2-37: Definition of the specific text field
Once the DB tag "freqError" assumes the signal state "TRUE", the supervision alarm will be
issued with the text from the specific text field. The error number will be displayed in decimal
format with the error text from the text list.
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2.2.18
Configure identical time stamps
A ProDiag function block of version 2.0 or later gives you the ability to specify a central time
stamp tag in the ProDiag supervision settings. You can then use this tag across the entire
project in every CPU.
The central time stamp tag is used as a global tag or a global data block element in the
respective CPU.
All ProDiag supervision alarms within a program cycle will be assigned the same system time if
the messages are sent by ProDiag function blocks with the "Use central time stamp" option
enabled. Configuration of identical time stamps is only necessary if you are using multiple
ProDiag function blocks.
To use a central time stamp, follow these steps:
1. Define the following two tags in the global data block "SeqData":
–
"identTimeStamp" (data type: LDT)
–
"retVal" (data type: Int)
2. Add the instruction "RD_SYS_T" to the organization block "Main", then parameterize the
"OUT" output with the DB tag "SeqData".identTimeStamp.
© Siemens AG 2022 All rights reserved
3. Interconnect the "RET_VAL" parameter with the DB tag "SeqData".retVal.
Figure 2-38: Read instruction for clock time
4. Open the "Common data" folder in the project tree.
5. Open the "Supervision settings" dialog.
6. In the area navigation, switch to the "General > Central time stamp" tab.
7. Enter the "SeqData".identTimeStamp DB tag, defined above, in the "Time stamp tag" field.
Figure 2-39: Configuring identical time stamps
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8. Right-click on the ProDiag FB "LiftProDiagFB" and select "Properties" from the context
menu.
9. Switch to the "Attributes" tab and tick the checkbox for the "Use central time stamp" option.
10. Click OK to close the dialog.
© Siemens AG 2022 All rights reserved
Figure 2-40: Enabling central time stamp
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2.2.19
Export/import supervision settings for ProDiag and S7 GRAPH
You can export the supervision settings for ProDiag and S7 GRAPH in a ".dat" file, which lets
you import them into a new project.
Proceed as follows to export or import the supervision settings:
1. Go to the "Common data" folder in the project tree and open the "Supervision settings".
2. Click the icon for
a. "Export supervision settings" to export the settings. Select a storage location.
b. "Import supervision settings" to import the settings. Select the file you want to import.
Figure 2-41: Exporting/importing global settings
a
© Siemens AG 2022 All rights reserved
b
Note
The ProDiag supervision settings build on alarm classes. In some cases you may need to
export the alarm classes as a ".dat" file as well.
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2.2.20
Export and import ProDiag supervisions and properties of a ProDiag FB
In addition to the supervisions from the ProDiag overview tables "Tag supervisions" and "FB
supervision definitions", you can also export/import the properties of one or more ProDiag FBs.
To export the supervisions and properties of one or more ProDiag FBs, proceed as follows:
1. In the project tree, open the "PLC supervisions & alarms" editor.
2. Switch to the "Global supervisions" tab.
3. Click the icon for
a. "Exports global supervisions" to export the tag supervisions. Select a storage location.
b. "Imports global supervisions" to import the settings. Select the file you want to import.
Figure 2-42: PLC supervisions & alarms
a
© Siemens AG 2022 All rights reserved
b
When importing, you can select what you wish to import and how. Besides importing the
supervisions, the "Supervision settings" can also be imported at the same time.
Figure 2-43: PLC supervisions & alarms
Note
Further information on the export/import functions can be found in the Online help or in the
STEP 7 and WinCC Engineering V18 system manual in the chapter entitled:
Exporting supervisions and properties of a ProDiag FB
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2.3
Download project
The configuration must now be compiled and downloaded to the PLC.
Download to PLC
To download the configuration to the PLC, follow the steps below:
1. Highlight the controller's "PLC_1" folder in the project tree.
2. Click on the "Download to device" button in the function bar.
© Siemens AG 2022 All rights reserved
Figure 2-44: PLC download
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3 Appendix
3
Appendix
3.1
Service and support
Industry Online Support
Do you have any questions or need assistance?
Siemens Industry Online Support offers round the clock access to our entire service and support
know-how and portfolio.
The Industry Online Support is the central address for information about our products, solutions
and services.
Product information, manuals, downloads, FAQs, application examples and videos – all
information is accessible with just a few mouse clicks:
support.industry.siemens.com
Technical Support
The Technical Support of Siemens Industry provides you fast and competent support regarding
all technical queries with numerous tailor-made offers
– ranging from basic support to individual support contracts.
© Siemens AG 2022 All rights reserved
Please send queries to Technical Support via Web form:
support.industry.siemens.com/cs/my/src
SITRAIN – Digital Industry Academy
We support you with our globally available training courses for industry with practical
experience, innovative learning methods and a concept that’s tailored to the customer’s specific
needs.
For more information on our offered trainings and courses, as well as their locations and dates,
refer to our web page:
siemens.com/sitrain
Service offer
Our range of services includes the following:
•
Plant data services
•
Spare parts services
•
Repair services
•
On-site and maintenance services
•
Retrofitting and modernization services
•
Service programs and contracts
You can find detailed information on our range of services in the service catalog web page:
support.industry.siemens.com/cs/sc
Industry Online Support app
You will receive optimum support wherever you are with the "Siemens Industry Online Support"
app. The app is available for iOS and Android:
support.industry.siemens.com/cs/ww/en/sc/2067
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3 Appendix
3.2
Industry Mall
The Siemens Industry Mall is the platform on which the entire siemens Industry product portfolio
is accessible. From the selection of products to the order and the delivery tracking, the Industry
Mall enables the complete purchasing processing – directly and independently of time and
location:
mall.industry.siemens.com
3.3
Links and literature
Table 3-1
© Siemens AG 2022 All rights reserved
No.
3.4
Topic
\1\
Siemens Industry Online Support
https://support.industry.siemens.com
\2\
Link to the article page of the application example
https://support.industry.siemens.com/cs/ww/en/view/109740151
\3\
System manual - SIMATIC STEP 7 Basic/Professional V18 and SIMATIC WinCC V18
https://support.industry.siemens.com/cs/ww/en/view/109815056
Change documentation
Table 3-2
Version
Date
V1.0
10/2016
First version
V2.0
12/2016
Added WinCC Runtime Professional
V3.0
09/2017
Added initial value acquisition (criteria analysis)
V4.0
07/2018
Update and addition of new functions with TIA Portal V15
V4.1
03/2019
Changed text in chapter 2.2.7
V5.0
08/2022
Update and addition of new functions with TIA Portal V17
V6.0
09/2023
Extension of WinCC V8, splitting into PLC and WinCC documents
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43