42

Parameter F_CRC_Length Does Not Match Generated Values (V2 CPU)

ABB · PB610 Panel Builder 600 Programming Software

What does 42 mean?

Parameter "F_CRC_Length" does not match the generated values in an AC500 V2 non-safety CPU PM5xx system. This indicates a misconfiguration in the CRC length parameter for PROFIsafe communication, leading to data integrity errors.

Common Causes

  • The CRC length value in parameter F_CRC_Length does not match the actual data length being transmitted.
  • Data corruption during transmission.
  • Incorrect calculation of Cyclic Redundancy Check (CRC).
  • Configuration mismatch between sender and receiver for CRC calculation.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the safety PLC configuration for the "F_CRC_Length" parameter.

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Verified technical data. Last updated: March 2026

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Source: ABB PB610 Panel Builder 600 Programming Software