FANUC Alarm SRVO-385 — OPSFTY42 status abnormal
FANUC SRVO-385 (“OPSFTY42 status abnormal”): A chain alarm was detected with the OPSFTY signal. First check: 1. Check whether the circuitry connected to the dual input signal (OPSFTY) is faulty. Likely part: Panel board (Operator panel board).
Updated 2026-09-17 · LogrobotLM reference
Description
A chain alarm was detected with the OPSFTY signal.
Remedy
1. Check whether the circuitry connected to the dual input signal (OPSFTY) is faulty. 2. Check whether the timing of the dual input signal (OPSFTY) satisfies the timing specification. 3. Replace the panel board.
Part to check / replace
FANUC SRVO-385 points to the hardware below — start here before ordering.
Tap a part for every code that points to it — and verify the exact variant for your controller before ordering.
Related codes
Same hardware involved
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 →