FANUC Alarm TOOL-012 — Tool mastering data is lost.
FANUC TOOL-012 (“Tool mastering data is lost.”): Mastering data of a servo tool was lost because of an unexpected stop during mastering of the tool. First check: 1. The tool pulse values and mastering data are lost.
Updated 2026-09-17 · LogrobotLM reference
Description
Mastering data of a servo tool was lost because of an unexpected stop during mastering of the tool.
Remedy
1. The tool pulse values and mastering data are lost. So, first move the tool by manual feed to cancel the "SRVO-075 Pulse not established" alarm. This alarm may not be occurring. If so, skip this step and proceed to the next step. 2. Next, carry out tool 0 position mastering and calibration manually.
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 →