KUKA Robot codes
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KUKA Robot Controller

System · Advanced

Alarm KRC0172

KUKA Robot KRC0172 - LEVEL OVERFLOW <IP,PCP>

This alarm indicates that the CPU computing time has exceeded the allocated cycle time budget for either the Interpolation Program (IP) or Process Computing Program (PCP) level in the KUKA KRC controller. The real-time operating system has detected that the current task execution cannot be completed within the mandatory 12ms cycle time window, causing a level overflow condition that triggers this critical alarm.

KUKA RobotSystemAdvanced

KRC0172

KUKA Robot KRC0172 - LEVEL OVERFLOW <IP,PCP>

LEVEL OVERFLOW <IP,PCP>

This alarm indicates that the CPU computing time has exceeded the allocated cycle time budget for either the Interpolation Program (IP) or Process Computing Program (PCP) level in the KUKA KRC controller. The real-time operating system has detected that the current task execution cannot be completed within the mandatory 12ms cycle time window, causing a level overflow condition that triggers this critical alarm.

Common Causes

  • Excessive or inefficient KRL program logic with too many calculations per cycle
  • Complex sensor processing or I/O operations blocking the main control loop
  • Insufficient optimization of motion commands or trajectory calculations
  • Third-party software modules or add-ons consuming excessive CPU resources
  • Hardware malfunction or degradation of the controller's processing unit

Troubleshooting Steps

  1. 1Review and optimize the active KRL program to reduce computational load per cycle, prioritizing critical motion commands
  2. 2Disable or defer non-essential background tasks, diagnostics, or optional software modules temporarily to isolate the overload source
  3. 3Check for infinite loops, recursive function calls, or unoptimized database queries in the program logic using the KUKA WorkVisual debugger
  4. 4Verify that all peripheral communications (Ethernet, serial, fieldbus) are functioning properly and not causing blocking I/O delays
  5. 5Restart the KRC controller and perform a system diagnostics test to confirm CPU performance and check for hardware faults
  6. 6If the issue persists, contact KUKA service support and provide diagnostic logs (flash dump) to identify potential firmware or hardware issues requiring replacement

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