Hello CodeShepperd, Thanks for your time. It was a mistake on the name , it is a CtrlX COREplus X3. The 2 controllers are different. The other controller is an XM22. The customer after some inspection found out that they had a short circuit between a 24 V cable and ground. After this shortcircuit happened , the CtrlX Core got this error. The problem is that the communication after this is stopped. For now it is solved (at least that's what I think) by deactivating the Watchdog in the profinetdevice task in the Scheduler. I ask the customer for extra information about the topology.
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