Robotics in Manufacturing
SRVO-094

SRVO-094: PMAL alarm (track encoder fault)

Line-tracking mirror of SRVO-072: the conveyor encoder itself is suspected faulty.

What it means

Line-tracking mirror of SRVO-072: the conveyor encoder itself is suspected faulty.

Common causes

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

  1. Phantom alongside the 090/091/092 trio.
  2. Genuine encoder failure.

How to fix it

  1. Check the trio first; otherwise replace the motor/encoder. Power-cycle to clear.

Quick facts

Category
Warning
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