GROUPERR_RANGE_TIMEUNITFIFO
Beckhoff · TwinCAT 2 NC
What does 42EA mean?
The 'Time Unit FIFO' parameter configured for the group is outside its allowed range of 0.0 ... 1000.0] seconds. This parameter likely relates to the timing and processing of buffered commands within the group's FIFO, and an incorrect value can disrupt sequential command execution or cause timing errors.
Common Causes
- Manual input error during configuration, setting the 'Time Unit FIFO' parameter outside the range [0.0 ... 1000.0] seconds.
- A PLC program or automated configuration routine attempted to assign an invalid 'Time Unit FIFO' value (e.g., negative or excessively high).
- Configuration file corruption or an incorrect restoration from backup, causing an out-of-range value for 'Time Unit FIFO'.
- Version incompatibility between the engineering software and the runtime, leading to misinterpretation of the 'Time Unit FIFO' parameter limits.
Repair Steps & Checklist
Click steps to track your progress.
- 1
1. Open the NC group configuration in the development environment (e.g., TwinCAT XAE).
- 2
2. Navigate to the 'Time Unit FIFO' parameter for the specific NC group.
- 3
3. Enter a valid value for 'Time Unit FIFO' within the range of [0.0 ... 1000.0] seconds.
- 4
4. Compile and download the updated configuration to the industrial PC (IPC) controller.
- 5
5. Cycle power on the IPC controller or execute an NC reset command to ensure the new parameter is active.