LogrobotLM

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FANUC Alarm PAIN-156 — WARN Pulse coder battery discon alarm

FANUC PAIN-156 (“WARN Pulse coder battery discon alarm”): The battery voltage for the pulse coder is zero volts. First check: Refer to troubleshooting section in the SYSTEM R-J Controller Series Electrical Connection and Maintenance Manual.

Updated 2026-09-17 · LogrobotLM reference

Description

The battery voltage for the pulse coder is zero volts.

Remedy

Refer to troubleshooting section in the SYSTEM R-J Controller Series Electrical Connection and Maintenance Manual.

Related codes

PAIN-154PAUS Servo amp overheat alarmPAIN-155ABRT Collision alarmPAIN-157ABRT Pulse coder alarmPAIN-158WARN Pulse coder battery low alarm

Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →