Robotics in Manufacturing
SRVO-404

SRVO-404: DCS Joint pos. limit

The DCS Joint Position Check caught the named axis outside its configured safe angular range - the joint-space version of the zone fence.

What it means

The DCS Joint Position Check caught the named axis outside its configured safe angular range - the joint-space version of the zone fence.

Common causes

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

  1. The axis genuinely at/outside its DCS position limit.
  2. Limit configured tighter than the taught path.

How to fix it

  1. If the axis is out of the safe range: SHIFT+RESET, then jog it back within limits.
  2. Persistent boundary hits: review the path and the limit together, adjusting only through the DCS apply process with the risk assessment in mind.

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