Corrected from:
- Library: FAST Motion V03.12.00.xx
(contained in the PLC Designer from V03.12.00)
Response of the new version:
If variables are declared in the PLC application and assigned to process data elements, exclusive access only via the application is no longer possible.
In this version, the SoftMotion driver can still access the process data elements and will, if any, overwrite changes made by the application.
The described behaviour only concerns Motion axis control.
What happens?
If a variable is declared in the PLC application and then assigned to a process data element, the SoftMotion driver can no longer access the process data element.
In this way, you can ensure that only the application will write to the element, e.g. to the CiA_Controlword.
The described behaviour only concerns Motion axis control.
When does this behaviour occur?
See above
Which products are affected?
- Library: FAST Motion
(contained in the PLC Designer)
Short-term measures:
If the above-described mechanism is used, do not install an update to version V3.12.0.
Evaluation/recommendations:
We basically recommend avoiding direct access to Motion axis process data from the PLC application.
Direct process data access leads to conflicts with the write access of the SoftMotion driver.
