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FANUC Alarm SYST-164 — WARN Teach Pendant communication error

Warning
Hardware
teach pendant
Controllers
R-30iA (this generation only)
FANUC class
WARN
Hardware family
FANUC teach pendant, main board, CMOS and controller battery alarms

FANUC SYST-164 (“WARN Teach Pendant communication error”): Communication with the teach pendant was interrupted. First check: Too much communication may have d the interrupt.

Updated 2026-10-22 · LogrobotLM reference

Description

Communication with the teach pendant was interrupted.

Remedy

Too much communication may have d the interrupt. Check that the teach pendant cable is working properly. Replace the cable if necessary.

Field diagnosis

Communication with the teach pendant was interrupted.

What to check

  • Check that the teach pendant cable is in good condition and replace it if necessary.
  • Note: Warning, unlike SYST-023.

Related codes

SYST-023SYSTEM Teach Pendant communication errorSYST-165PAUSE TP intermittent communication errorSYST-166WARN TP intermittent communication errorSYST-162PAUSE Servo On during Remote diagnosticSYST-163WARN Cannot operate IO during Remote diagnostic

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 →