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OperReqInv (Status.4)
D3SD Multiple Operator State Requests
Allen-Bradley · Logix 5000 Advanced Process Control and Drives
¿Qué significa OperReqInv (Status.4) ?
The D3SD instruction received simultaneous requests from multiple operator state bits. This creates a conflict, making it impossible for the instruction to determine the intended operator command.
Causas comunes
- Multiple OperReq inputs (e.g., Oper0Req, Oper1Req) are active concurrently, indicating conflicting operator requests.
Pasos de reparación & Lista de verificación
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- 1
Review the operator interface and associated logic for the D3SD instruction — confirm that only one operator state request bit can be active at any given time, as described in the 'Commanded State in Program Control' section.
Datos técnicos verificados. Última actualización: March 2026
Fallas relacionadas
Fuente: Allen-Bradley Logix 5000 Advanced Process Control and Drives