Transmission Error: Data Inconsistent (CRC2 error) (V2 CPU)

What does 77 mean?

A transmission error indicating inconsistent data due to a CRC2 error has occurred in an AC500 V2 non-safety CPU PM5xx system. This signifies a loss of data integrity during PROFIsafe communication.

• Data received over the network is inconsistent, indicated by a CRC2 error.
• Network transmission errors corrupting the data packet.
• Faulty network cable or connector.
• Interference on the communication bus.

Click steps to track your progress.

1. 1

   Check communication lines for physical damage or interference.

2. 2

   Review the PROFIsafe configuration for consistency.