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KUKA Robot Controller
Communication · Basic
KUKA Robot KRC0654 - InterBus : bus warning <segment, position>
An InterBus module in the specified segment and position is experiencing a bus warning condition. This indicates degraded communication or intermittent faults in the InterBus network topology that may affect robot control if not resolved. The alarm does not yet represent a complete bus failure but requires immediate diagnostic attention to prevent escalation to a bus error.
KRC0654
KUKA Robot KRC0654 - InterBus : bus warning <segment, position>
InterBus : bus warning <segment, position>
An InterBus module in the specified segment and position is experiencing a bus warning condition. This indicates degraded communication or intermittent faults in the InterBus network topology that may affect robot control if not resolved. The alarm does not yet represent a complete bus failure but requires immediate diagnostic attention to prevent escalation to a bus error.
Common Causes
- Loose or corroded InterBus connector pins at the specified segment position
- Damaged or bent InterBus cable shielding causing electromagnetic interference
- Intermittent contact in the InterBus ring due to vibration-induced micro-movements
- Power supply voltage fluctuations affecting the InterBus module electronics
- Degraded termination resistors in the InterBus ring network causing signal reflections
Troubleshooting Steps
- 1Note the exact segment and position number from the alarm message for targeted inspection
- 2Power down the KRC4 controller and inspect the InterBus connector at the specified position for corrosion, bent pins, or debris
- 3Disconnect and reconnect the InterBus cable at the flagged segment position with firm seating pressure
- 4Visually trace the InterBus cable for pinch points, sharp bends, or damage to the outer shielding
- 5Use WorkVisual to access bus diagnostics and verify termination resistance values match KUKA specifications for the ring topology
- 6Replace the InterBus cable or module at the specified position if physical damage is observed or electrical tests confirm signal degradation
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