Robotics in Manufacturing
SRVO-092

SRVO-092: Line tracking encoder STBERR communication fault

A communication error occurred between the Pulsecoder and the line tracking interface board.

What it means

A communication error occurred between the Pulsecoder and the line tracking interface board. The number in brackets identifies which line tracking encoder is involved.

Common causes

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

  1. Communication fault between the Pulsecoder and the line tracking I/F board on the indicated encoder channel.

How to fix it

  1. Follow the remedy described for SRVO-090.
  2. Cycle controller power to clear the alarm.

Quick facts

Category
Servo
Affected series
FANUC R-30iB controllers
Alarm family
SRVO

Related codes

Verified against FANUC documentation (B-83284EN-1).Last reviewed: 2026-07-10.Editorial process