KUKA Robot codes
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KUKA Robot Controller

System · Basic

Alarm KRC0446

KUKA Robot KRC0446 - COMMAND NOT ALLOWED

This alarm indicates that the KRC controller has received a command that is either not recognized by the system or not permitted in the current operational state. The command syntax may be invalid, or the command execution is restricted due to safety interlocks, access permissions, or controller mode limitations.

KUKA RobotSystemBasic

KRC0446

KUKA Robot KRC0446 - COMMAND NOT ALLOWED

COMMAND NOT ALLOWED

This alarm indicates that the KRC controller has received a command that is either not recognized by the system or not permitted in the current operational state. The command syntax may be invalid, or the command execution is restricted due to safety interlocks, access permissions, or controller mode limitations.

Common Causes

  • Invalid or malformed command syntax in the KRL program or external interface communication
  • Command issued while robot is in TEACH mode instead of AUTO mode, or vice versa
  • Attempt to execute a restricted command without proper access permissions or user credentials
  • Communication protocol mismatch or unsupported command for the current KRC software version
  • Motion command issued while safety functions are active or during a protective stop condition

Troubleshooting Steps

  1. 1Verify the command syntax against KUKA KRL documentation and ensure proper formatting and spelling
  2. 2Check the robot's current operating mode (TEACH, AUTO, or MANUAL) and confirm the command is permitted in that mode
  3. 3Review access control settings and user permissions in the KRC controller configuration for command restrictions
  4. 4Confirm that the KRC software version supports the command being issued, and check for any firmware updates
  5. 5Clear any active safety functions, protective stops, or interlock conditions that may prevent command execution
  6. 6Reset the controller and re-download the program to eliminate potential communication or parsing errors

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