Request is redundant
Allen-Bradley · Logix 5000
¿Qué significa F00D ?
The submitted request is redundant, meaning it duplicates a previous or active request. This fault indicates an unnecessary or repeated command.
Causas comunes
- Request is redundant
Pasos de reparación & Lista de verificación
Haga clic en los pasos para seguir su progreso.
- 1
Verify the specific PLC logic (rung, routine, or program block) generating the request for re-triggering conditions, persistent command enabling, or improper sequencing.
- 2
Inspect physical input devices (sensors, limit switches, pushbuttons) and their wiring associated with the command for chattering, intermittent signals, or loose connections, observing their status in the PLC tags.
- 3
Check the HMI/SCADA application's command button configuration, script execution frequency, or data write instructions to ensure commands are not sent multiple times unintentionally.
- 4
Analyze the program execution context for the request, including associated timers, counters, or one-shot instructions, to ensure proper clear/reset mechanisms are in place preventing re-execution.