What causes KUKA Robot alarm KRC0591?

DISTANCE value is negative or zero when a positive value is required. DISTANCE value exceeds the maximum allowable distance for the robot's workspace or motion type. DISTANCE parameter is omitted or not properly defined in the motion instruction. Incorrect unit conversion applied to the DISTANCE value (mm vs. inches or other units). Data type mismatch where DISTANCE is defined as a non-numeric value or incompatible variable type.

How do I fix KUKA Robot alarm KRC0591?

1. Verify the DISTANCE value in the program code and cross-reference it with the robot's technical specifications for maximum reachable distance 2. Confirm that the DISTANCE value is positive and greater than zero, and appropriate for the motion command being used (PTP, LIN, CIRC, etc.) 3. Check the variable declaration and ensure DISTANCE is properly defined as a REAL or compatible numeric data type 4. Review the program syntax to ensure DISTANCE is correctly specified with proper units and decimal notation according to KRL language requirements 5. Consult the robot's workspace limits and safety parameters to ensure the DISTANCE value does not exceed kinematic or hardware constraints 6. Clear the alarm, correct the DISTANCE value in the program, and re-execute the motion instruction after verifying all parameters are within acceptable ranges

KUKA Robot codes

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KUKA Robot Controller

System · Basic

Alarm KRC0591

KUKA Robot KRC0591 - Invalid “DISTANCE” value

This alarm indicates that a DISTANCE parameter value specified in a motion command or program instruction exceeds the permissible range or violates the controller's validation criteria. The DISTANCE value must fall within the defined limits for the specific motion function being executed, typically ranging from a minimum threshold above zero to a maximum value based on the robot's workspace and kinematic configuration.

KUKA RobotSystemBasic

KRC0591

KUKA Robot KRC0591 - Invalid “DISTANCE” value

Invalid “DISTANCE” value

Common Causes

DISTANCE value is negative or zero when a positive value is required
DISTANCE value exceeds the maximum allowable distance for the robot's workspace or motion type
DISTANCE parameter is omitted or not properly defined in the motion instruction
Incorrect unit conversion applied to the DISTANCE value (mm vs. inches or other units)
Data type mismatch where DISTANCE is defined as a non-numeric value or incompatible variable type

Troubleshooting Steps

1Verify the DISTANCE value in the program code and cross-reference it with the robot's technical specifications for maximum reachable distance
2Confirm that the DISTANCE value is positive and greater than zero, and appropriate for the motion command being used (PTP, LIN, CIRC, etc.)
3Check the variable declaration and ensure DISTANCE is properly defined as a REAL or compatible numeric data type
4Review the program syntax to ensure DISTANCE is correctly specified with proper units and decimal notation according to KRL language requirements
5Consult the robot's workspace limits and safety parameters to ensure the DISTANCE value does not exceed kinematic or hardware constraints
6Clear the alarm, correct the DISTANCE value in the program, and re-execute the motion instruction after verifying all parameters are within acceptable ranges

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