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FANUC Alarm PNT1-070 — Conveyor direction incorrect

FANUC PNT1-070 (“Conveyor direction incorrect”): For continuous line systems, the robot has determined the conveyor is running in the wrong direction. First check: Swap the leads on the encoder repeater board so that the encoder counts positive pulses instead of negative.

Updated 2026-09-17 · LogrobotLM reference

Description

For continuous line systems, the robot has determined the conveyor is running in the wrong direction. Part detects will be ignored by the robot.

Remedy

Swap the leads on the encoder repeater board so that the encoder counts positive pulses instead of negative.

Related codes

PNT1-068Encoder count rolloverPNT1-069Part Detect less than min distPNT1-071… skipped-over max travelPNT1-072Tracking encoder disconnected

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 →