42FF

GROUPERR_WATCHDOG (customer specific error code)

Beckhoff · TwinCAT 2 NC

What does 42FF mean?

A watchdog timer for the group has expired, signaling a critical delay or unresponsiveness in the system's processing of group-related tasks. As this is a customer-specific error code, it points to a potential issue in the customer's application logic, configuration, or system load causing the processing delay.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    If appropriate, slightly adjust the watchdog timeout settings, but avoid masking underlying issues.

  2. 4

    Use system diagnostics to pinpoint which part of the group processing is causing the delay.

Source: Beckhoff TwinCAT 2 NC
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