LogrobotLM

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FANUC Alarm SVGN-129 — Invalid thickness tolerance specified.

FANUC SVGN-129 (“Invalid thickness tolerance specified.”): A string parameter or a value less than 0.0 was specified for the THK_TOL macro. First check: Re-enter a parameter value greater than or equal to 0.0 into the thickness tolerance macro.

Updated 2026-08-29 · LogrobotLM reference

Description

A string parameter or a value less than 0.0 was specified for the THK_TOL macro.

Remedy · Remède

Re-enter a parameter value greater than or equal to 0.0 into the thickness tolerance macro.

Frequently asked · Questions fréquentes

What does FANUC alarm SVGN-129 mean?
FANUC SVGN-129 (“Invalid thickness tolerance specified.”): A string parameter or a value less than 0.0 was specified for the THK_TOL macro.
How do you troubleshoot FANUC alarm SVGN-129?
Re-enter a parameter value greater than or equal to 0.0 into the thickness tolerance macro.

Related codes / Codes liés

SVGN-127DSP max gun torque update timeout.SVGN-128Invalid thickness value specified.SVGN-130Invalid thickness severity specified.SVGN-131Invalid gun index specified.

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. · Informations indicatives issues du terrain — le manuel du constructeur et ses procédures de sécurité font foi. Ne shuntez jamais un organe de sécurité ; consignez (LOTO) avant toute intervention physique. How this reference is built →