What causes KUKA Robot alarm KRC0641?

Incorrect parameter order in ANOUT command where MIN and MAX arguments are reversed. Copy-paste error when setting up multiple analog output channels with swapped values. Manual KRL code entry mistake assigning larger value to minimum parameter than maximum. Incorrect variable initialization for analog output range boundaries in program setup. Misunderstanding of ANOUT syntax requirements in legacy KRL code conversion.

How do I fix KUKA Robot alarm KRC0641?

1. Review the ANOUT command syntax in the KRL program and verify MIN parameter is numerically less than MAX parameter 2. Check the actual values assigned to minimum and maximum variables at runtime using KUKA smartPAD variable monitoring 3. Compare the analog output configuration against WorkVisual IO mapping to ensure correct signal range definition 4. Test the ANOUT parameters with known good values from a reference program or template 5. Reconfigure the ANOUT command with corrected MIN and MAX values in the proper sequence 6. Execute a test run with the corrected parameters and monitor analog output signal using external measurement equipment

KUKA Robot codes

axismd.ai

KUKA Robot Controller

System · Basic

Alarm KRC0641

KUKA Robot KRC0641 - MINIMUM MUST BE LESS THAN MAXIMUM

This alarm occurs when an ANOUT (analog output) command is configured with a minimum value that exceeds the maximum value, which is an invalid parameter range. The analog output cannot be properly scaled when minimum is greater than maximum, preventing correct signal transmission to peripheral devices.

KUKA RobotSystemBasic

KRC0641

KUKA Robot KRC0641 - MINIMUM MUST BE LESS THAN MAXIMUM

MINIMUM MUST BE LESS THAN MAXIMUM

Common Causes

Incorrect parameter order in ANOUT command where MIN and MAX arguments are reversed
Copy-paste error when setting up multiple analog output channels with swapped values
Manual KRL code entry mistake assigning larger value to minimum parameter than maximum
Incorrect variable initialization for analog output range boundaries in program setup
Misunderstanding of ANOUT syntax requirements in legacy KRL code conversion

Troubleshooting Steps

1Review the ANOUT command syntax in the KRL program and verify MIN parameter is numerically less than MAX parameter
2Check the actual values assigned to minimum and maximum variables at runtime using KUKA smartPAD variable monitoring
3Compare the analog output configuration against WorkVisual IO mapping to ensure correct signal range definition
4Test the ANOUT parameters with known good values from a reference program or template
5Reconfigure the ANOUT command with corrected MIN and MAX values in the proper sequence
6Execute a test run with the corrected parameters and monitor analog output signal using external measurement equipment

Seeing Multiple Alarms?

Seeing another alarm with this one? Enter the code.

Get machine-aware diagnosis

AxisMD logs alarms against your actual machines, tracks patterns, and gives AI context your manual doesn't have.

Start free

Was this guide helpful?

Always verify with your machine manual or a certified technician before performing service procedures.