KRC0237

Common Causes

• Interbus cable disconnection or poor electrical connection at the terminal or slave device
• Interbus slave device not responding or offline due to power failure or hardware malfunction
• KRC controller CPU overload causing real-time task delays and missed read cycles
• Incorrect Interbus cycle time configuration in the controller parameters or too aggressive timing settings
• Corrupted Interbus configuration file or incompatible driver version in the KRC system

Troubleshooting Steps

1. 1Verify all Interbus cables are securely connected at both the KRC controller Interbus interface and all slave devices, checking for bent pins or visible damage
2. 2Power cycle all Interbus slave devices and confirm they initialize properly and appear in the system diagnostic interface
3. 3Check the KRC controller CPU load and active tasks in the system diagnostics; reduce background tasks if load exceeds 80% during normal operation
4. 4Review the Interbus cycle time settings in the KRC configuration files and increase the watchdog timeout value if timing is too aggressive for your network topology
5. 5Reload or verify the Interbus configuration file (typically stored in /KRC/Roboter/Config/) and ensure driver compatibility with the current KRC firmware version
6. 6If the issue persists, perform a complete Interbus network scan and reinitialize all slave devices through the KUKA smartHMI or teach pendant to re-establish communication parameters