Corrected from:
PLC Designer V3.5
Response of the new version?
When the project is downloaded, the value of the persistent variables remains unchanged.
Which products are affected?
PLC Designer from V3.3
What happens?
Persistent variables are reset to their initial value after the project has been downloaded.
When does the problem occur?
Persistent variables are reset if the structure of this variable type has been changed, e.g. a persistent variable has been added.
Diagnostic options?
Check the values of the persistent variables.
Short-term measures/recommendations?
None
Evaluation
The function restriction only occurs if persistent variables have been added to or deleted from the project.