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.
- 3
If appropriate, slightly adjust the watchdog timeout settings, but avoid masking underlying issues.
- 4
Use system diagnostics to pinpoint which part of the group processing is causing the delay.
Source: Beckhoff TwinCAT 2 NC
View Official PDF