Cause
Identical designations were entered at a PLC box that contains PLC structure data in the Rack ID and PLC card is placed on rack ID fields, which means that the rack is mounted on itself.
Solution
- Open the Properties <...> dialog of the corresponding PLC box.
- Bring the PLC structure data tab to the front.
- In the first tab, enter different data into the Rack ID and PLC card is placed on rack ID fields.
- If required, start a new check run.
Note:
This check run only checks PLC boxes at which a configuration project is entered.