Allen-Bradley error codes

7 documented Allen-Bradley error codes, with meaning, probable causes and a guided diagnostic tree in the app.

ElectraIQ

• 1756-IB16 — Digital input module — input not reading (stuck at 0)
• 1756-IF8 — Analog input module — full-scale reading or error
• 1756-PA75 — Unstable PLC power supply — cyclic restarts
• Major Fault Type 1 — CPU in STOP
• Major Fault Type 3 — CPU ↔ I/O module communication error (backplane bus)
• Minor Fault Type 10 — Memory error / backup battery depleted
• Safety Task Fault Type 14 — Safety module F-CPU/F-DI/F-DO in passivation

All brands