KUKA Robot codes
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KUKA Robot Controller

System · Intermediate

Alarm KRC0631

KUKA Robot KRC0631 - Tech mode inadmissible

This alarm indicates that an incompatible operating mode has been selected for the active technology package. The CYCLE mode cannot be used with the VEL (velocity) technology category, as VEL requires specific mode configurations that are not compatible with CYCLE operation. This mismatch prevents the robot from executing the programmed motion safely.

KUKA RobotSystemIntermediate

KRC0631

KUKA Robot KRC0631 - Tech mode inadmissible

Tech mode inadmissible

This alarm indicates that an incompatible operating mode has been selected for the active technology package. The CYCLE mode cannot be used with the VEL (velocity) technology category, as VEL requires specific mode configurations that are not compatible with CYCLE operation. This mismatch prevents the robot from executing the programmed motion safely.

Common Causes

  • Technology package VEL is active while CYCLE mode is selected in the program
  • Incorrect technology category assigned to the motion task or program segment
  • Technology package configuration does not support CYCLE mode execution
  • Mode selection was changed after technology package initialization without verification
  • Program contains legacy code written for different technology package than currently active

Troubleshooting Steps

  1. 1Verify the active technology package in the controller settings and compare against program requirements
  2. 2Switch the operating mode from CYCLE to a mode compatible with VEL technology (typically T1 or T2 manual mode for diagnostics)
  3. 3Review the program's technology package declarations and ensure VEL configuration matches the intended motion mode
  4. 4Check the technology package installation and verify VEL parameters are correctly loaded in the system configuration
  5. 5Reselect the appropriate technology package that supports CYCLE mode, or modify the program to use VEL-compatible modes
  6. 6Reset the controller and reload the program after correcting the technology package/mode combination

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