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FANUC Alarm SYST-008 — WARN Nothing is the master device

FANUC SYST-008 (“WARN Nothing is the master device”): The system variable $RMT_MASTER is set to disable all devices. First check: Turn the REMOTE switch to local (if the operation is attempted from the SOP), or set the $RMT_MASTER system variable correctly.

Updated 2026-09-17 · LogrobotLM reference

Description

The system variable $RMT_MASTER is set to disable all devices. Therefore, no remote device can issue motion.

Remedy

Turn the REMOTE switch to local (if the operation is attempted from the SOP), or set the $RMT_MASTER system variable correctly. Refer to the SYSTEM R-J2 Software Reference Manual, Chapter 2 "System Variables", for more information on system variables.

Related codes

SYST-006WARN KCL is the master deviceSYST-007WARN NETWORK is the master deviceSYST-009WARN Safety Fence openSYST-010WARN Max num task reached

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 →