FANUC Alarm SRVO-337 — DCS PRMCHK alarm …,…
Manufacturer wording — DCS PRMCHK alarm %x,%x
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC SRVO-337 (“DCS PRMCHK alarm …,…”): A DCS parameter error is detected. First check: 1. If power down occurred while DCS parameters were being changed, set the DCS parameters again. Likely part: Main board (Main CPU board) +1 more.
Updated 2026-09-17 · LogrobotLM reference
Description
A DCS parameter error is detected.
Remedy
1. If power down occurred while DCS parameters were being changed, set the DCS parameters again. 2. Load backup files. 3. Replace main board, CPU card, FROM/SRAM module.
Part to check / replace
FANUC SRVO-337 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 →