The presentation from the PLCopen and PLC Checker webinar hosted by Itris Automation on 23rd October 2017.

1. How to verify compliance with PLCopen® coding
guidelines with PLC Checker？
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2. Team introduction
Karoline Beske
Export Director
karoline.beske@itris-automation.com
Marwen Saafi
Technical Support
marwen.saafi@automationsquare.com
Robyn Buckland
Marketing Director
robyn.buckland@automationsquare.com
Zhihang Wang
Sales & Marketing Assistant
zhihang.wang@automationsquare.com
@2008-2017ItrisAutomationSquareSAS

3. Table of content
PLCopen®
coding guidelines
PLC Checker
@2008-2017ItrisAutomationSquareSAS
Itris Automation
PLCopen®

4. PLCopen®
Welcome
Mr. van der Wal
PLCopen® Managing Director
evdwal@plcopen.org

5. PLCopen® Association
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Business
Vendor and product independent
worldwide association
Location
Headquarter: The Netherlands
Branches: China, Japan, USA and
Korea
Mission
Be the leading association resolving
topics related to control programming
and to support the use of international
standards in this field.

6. PLCopen® Association
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7. Table of content
Itris Automation
PLCopen®
PLC Checker
@2008-2017ItrisAutomationSquareSAS
PLCopen®
coding guidelines

8. PLCopen® coding guidelines
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5 Categories
• Naming
• Comment
• Coding Practices
• Languages
• Vendor-Specific
3 levels of importance
• High
• Medium
• Low
23 team members from 12 companies
64 Rules
Good practice programming rules
5 References
• IEC 61131.3
• IEC 61131.8
• JSF++ coding standard
• MISRA-C
• Codesys On-line help

9. PLCopen® coding guidelines
@2008-2017ItrisAutomationSquareSAS
Purpose
• To introduce a coding standard for the Industrial Control Market
• To deal with the complexity of larger programs
• To increase efficiency in coding
• To support the program life cycle
Benefits
• Higher quality and efficiency
• Better maintainability
• Lower costs, especially over the life-cycle

10. PLCopen® coding guidelines
@2008-2017ItrisAutomationSquareSAS
Rules description format
Required
Identifier: reference number of the rule
Importance: the level of effect on the quality of the
application software (high, medium or low)
Targeted language: Language or languages the rule can be
applied.
References: when rules was found or inspired by a third
party document, the reference is given in this field
Description: a detailed description of the rule
Guidelines: explanation of how to deal with the rule
violation.
Reasoning: reasons why this rule is valuable
Optional
Exceptions: good reasons not to follow the rule in
certain cases
Example: an explanatory example to help
understanding of the rule
Don’t：example in red color to highlight bad coding
practice
Do：example in green color to highlight good coding
practice
Comments: extension of the rule description. To link
with other rules or subjects which may be out of the
scope of this document.

11. PLCopen® coding guidelines
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12. PLCopen® coding guidelines
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Why should we use PLCopen coding guidelines?
• The first general coding guidelines proposed for industrial control
• Help to enhance programming methods within automation industry
• Improve readability, efficiency, maintainability, reliability and security (IEC 25010)
• Ensure the consistency of the verification process
• A good starting point for companies to define their company-internal guidelines
• And it is open to the community - download from www.PLCopen.org

13. Table of content
PLCopen®
PLCopen®
coding guidelines
@2008-2017ItrisAutomationSquareSAS
PLC Checker
Itris Automation

14. Itris Automation
Business
Software engineering company
Provides PLC development tools
Location
Grenoble,
France
Our Mission
Optimizing development processes of PLC programs by
- Increasing productivity
- Improving program quality
- Reducing testing & commissioning time
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15. Table of content
Itris Automation
PLCopen®
PLCopen®
coding guidelines
@2008-2017ItrisAutomationSquareSAS
PLC Checker

16. @2008-2017ItrisAutomationSquareSAS
PLC Checker
Support of all 5 languages of
the IEC 61131
Support of major brands
and formats
Itris Technology
PLC
Checker
Rules
Verification

17. PLC Checker
PLC
Checker
Checker
Ruleset
PLC
program
export
Upload Results
Static
analysis
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18. PLC Checker
Adaptation
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PLCopen
Ruleset
How are the PLCopen®
coding guidelines mapped
to the Checker ruleset?

19. PLC Checker
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Rules
Classification
In short term
In long term
Already Available
Automatable with
configuration
Cannot be
supported by PLC
Checker
Cannot be
supported by
automatic tools
Total Feasibility
Feasible Not feasible
88%
12%
Automatable
rules
Rules Automatable
with development
Not automatable
rules

20. PLC Checker
@2008-2017ItrisAutomationSquareSAS
Codes which violate the rules
Errors are made intentionally in the code and are manually tested
New automate tests are ran periodically and results are compared with the reference
Each rule is tested on PLC programs from different development environments
Keep the test results and the tested PLC program as references
Testing

21. PLC Checker
PLC
Checker
PLC
program
export
Upload
Results
For
PlCopen
Static
analysis
@2008-2017ItrisAutomationSquareSAS
PLCopen
Ruleset

22. PLC Checker
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PLCopen
Ruleset
Checker
Ruleset
How the PLCopen® coding guidelines are mapped to the Checker ruleset？
Examples

23. PLC Checker
How the PLCopen® coding guidelines are mapped to the Checker ruleset？
Examples
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24. PLC Checker
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25. PLC Checker – Demo
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26. Contact information
For further questions or information
www.itris-automation.com
+33 476 236 756
karoline.beske@itris-automation.com (Export Director)
Remaining questions will be addressed after
the Webinar
@2008-2017ItrisAutomationSquareSAS

27. Thank you
Have a nice day! 
www.itris-automation.com
@2008-2017ItrisAutomationSquareSAS