Robotics in Manufacturing
SRVO-001

SRVO-001: Operator panel E-stop

The emergency stop button on the controller's operator panel is pressed (or its circuit thinks it is).

What it means

The emergency stop button on the controller's operator panel is pressed (or its circuit thinks it is). The robot is stopped and won't run until the E-stop condition clears. If nobody pressed the button, you're looking at a circuit or fuse problem, not a robot problem.

Common causes

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

  1. The operator panel E-stop button is physically latched in.
  2. A blown fuse - especially if SRVO-213 appears alongside this alarm.
  3. Fault in the E-stop board or related wiring.
  4. Note: while the teach pendant E-stop is pressed, the panel button's state can't be read, so this alarm may be masked.

How to fix it

  1. Twist the operator panel E-stop button clockwise to release it, then press RESET.
  2. If SRVO-213 accompanies it, check fuses first - follow the SRVO-213 remedy.
  3. If it won't reset with the button clearly released, suspect the E-stop board or wiring; that diagnosis belongs in the controller maintenance manual with a qualified tech and lockout/tagout.

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