Corrected from:
PLC Designer V4.0
Response of the new version:
The object 'Task configuration' in the device tree of the PLC Designer project can be opened successfully.
What happens?
The object 'Task configuration' in the device tree of the PLC Designer project cannot be opened. When opening, the error message appears:
The value must not be NULL. Parameter name: expToVisit
When does the behaviour occur?
The behaviour described above occurs,
- after a PLC project has been newly created and
- if the current version of the compiler has not been set in the PLC project (see menu command 'Project' > 'Project environment' ) and
- when the PLC Designer is logged in on the controller - also in simulation mode.
Which products are affected?
PLC Designer from V3.24
Short-term measures:
Save the PLC project and open it again. Afterwards, the 'Task configuration' object can also be opened online.
Evaluation / recommendations:
Directly after creating a PLC Designer project, the 'Task configuration' object cannot be opened online. This is only possible after saving and reopening the project. The PLC Designer project is not damaged by this function restriction.
Automatic Translation
