RS
Reference Stop - Impermissible Operating Mode
Kuka · ProfiNet Controller/Device 3.1
What does RS mean?
This signal indicates that a reference stop has occurred because the robot is operating in a mode not permitted for referencing. Reference runs are strictly confined to operating modes T1 (Teach mode 1) and CRR (Continuous Run Robot).
Common Causes
- Device entered an impermissible operating mode, preventing startup.
- Safety interlock active, blocking the requested operating mode.
- Emergency stop condition active.
- Incorrect sequence of operations initiated by the control system.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Before attempting a reference run, ensure the robot controller's operating mode is set to either T1 or CRR.
Verified technical data. Last updated: March 2026
Related Faults
Source: Kuka ProfiNet Controller/Device 3.1