Causes
A PLC card of the Siemens PLC station type ET200xxx has been identified as a non-valid rack, since the properties Bus coupler / head station and CPU were not assigned in accordance with the rules.
Solution
- Locate the PLC card in the schematic using the Go to (graphic) functionality from the popup menu in the Message management dialog.
- Launch the property dialog of the PLC card.
- Bring the PLC structure data tab to the front.
- If the PLC box is to represent a bus coupler and / or CPU, ensure that the properties Bus coupler / head station and / or CPU are activated. Additionally enter the desired value into the Rack field.
- Click [OK].
- If required, start a new check run.