F08526 fault in siemens 6RA80 DC Drive indicate No cyclic connection. This means there is no cyclic connection to the control.

1. Establish the cyclic connection and activate the control with cyclic operation.
2. For PROFINET, check the parameters "Name of Station" and "IP of Station" (r61000, r61001).
3. If a CBE20 is inserted and PROFIBUS is to communicate via PZD Interface 1, then this must be parameterized using the STARTER commissioning tool or directly using p8839.