LogrobotLM

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FANUC Alarm SVGN-128 — Invalid thickness value specified.

FANUC SVGN-128 (“Invalid thickness value specified.”): A string parameter or a value less than 0.0 was passed into the THK_VAL macro. First check: Re-enter a parameter value greater than or equal to 0.0 into the thickness value macro.

Updated 2026-09-17 · LogrobotLM reference

Description

A string parameter or a value less than 0.0 was passed into the THK_VAL macro.

Remedy

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

Related codes

SVGN-126Servo parameters exceed max gun torque.SVGN-127DSP max gun torque update timeout.SVGN-129Invalid thickness tolerance specified.SVGN-130Invalid thickness severity specified.

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