What causes KUKA Robot alarm KRC0577?

Multiple Trigger commands stacked in a single block without proper sequencing. Nested or overlapping Trigger instructions that remain active simultaneously. Using Trigger commands with incorrect or missing Wait conditions to deactivate previous triggers. Complex program logic attempting to initiate more concurrent triggered actions than the controller supports. Copy-paste errors resulting in duplicate Trigger commands within the same program block.

How do I fix KUKA Robot alarm KRC0577?

1. Review the program block containing the error and identify all active Trigger commands present 2. Reduce the number of concurrent Trigger commands by distributing them across multiple sequential blocks 3. Insert appropriate Wait or synchronization instructions between Trigger commands to ensure previous triggers are deactivated before new ones activate 4. Check for redundant or duplicate Trigger instructions and remove unnecessary ones 5. Verify the program logic flow and restructure the motion sequence to comply with the maximum active trigger limit 6. Consult the KUKA KRC programming manual for the specific maximum trigger limit and test the corrected program in simulation before deployment

KUKA Robot codes

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KUKA Robot Controller

System · Basic

Alarm KRC0577

KUKA Robot KRC0577 - Max. active triggers reached

This alarm indicates that the maximum number of active Trigger commands has been exceeded within a single program block in the KUKA KRC controller. The Trigger instruction is used to initiate asynchronous actions, and the controller has a limit on how many can be simultaneously active in one block. Exceeding this limit prevents proper execution and synchronization of triggered events.

KUKA RobotSystemBasic

KRC0577

KUKA Robot KRC0577 - Max. active triggers reached

Max. active triggers reached

Common Causes

Multiple Trigger commands stacked in a single block without proper sequencing
Nested or overlapping Trigger instructions that remain active simultaneously
Using Trigger commands with incorrect or missing Wait conditions to deactivate previous triggers
Complex program logic attempting to initiate more concurrent triggered actions than the controller supports
Copy-paste errors resulting in duplicate Trigger commands within the same program block

Troubleshooting Steps

1Review the program block containing the error and identify all active Trigger commands present
2Reduce the number of concurrent Trigger commands by distributing them across multiple sequential blocks
3Insert appropriate Wait or synchronization instructions between Trigger commands to ensure previous triggers are deactivated before new ones activate
4Check for redundant or duplicate Trigger instructions and remove unnecessary ones
5Verify the program logic flow and restructure the motion sequence to comply with the maximum active trigger limit
6Consult the KUKA KRC programming manual for the specific maximum trigger limit and test the corrected program in simulation before deployment

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