FANUC Alarm VARS-201 — … 0x… bad end tag
Manufacturer wording — [%s]%s 0x%x bad end tag
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC VARS-201 (“… 0x… bad end tag”): System variable data has been corrupted. First check: Cycle Start the controller and try the operation again.
Updated 2026-09-17 · LogrobotLM reference
Description
System variable data has been corrupted.
Remedy
Cycle Start the controller and try the operation again.
Related codes
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 →