Robotics in Manufacturing
SRVO-120

SRVO-120: SFIVAL abnml

Softfloat alarm: the integrator torque measured just before softfloat execution differed too much from the stored reference value ($SFLT_IVAL) - the robot's load state at softfloat start doesn't match what SFIGET captured.

What it means

Softfloat alarm: the integrator torque measured just before softfloat execution differed too much from the stored reference value ($SFLT_IVAL) - the robot's load state at softfloat start doesn't match what SFIGET captured.

Common causes

Ranked by what technicians most often find, most likely first.

  1. Load conditions changed since SFIGET captured the reference (different part, tooling, or posture).
  2. Comparison limit ($SFIVALLIM) too tight for normal variation.

How to fix it

  1. Re-run the SFIGET program to capture fresh reference values under current conditions.
  2. If variation is legitimate, increase $SFLT_GRP[schedule].$SFIVALLIM for the axis.

Quick facts

Category
Servo
Affected series
R-30iB; R-30iB Mate; R-30iB Plus; R-30iB Mate Plus
Alarm family
SRVO

Related codes

Verified against FANUC documentation (B-83284EN-1).Last reviewed: 2026-07-09.Editorial process