Fault Phenomenon: Sarens custom modular crane when multiple power packs are connected in parallel, the main control system cannot recognize some power units.

Troubleshooting Process:
– Checked CAN bus connectors: waterproof seals not crimped.
– Checked terminating resistors: missing.
– Checked address dip switches: address conflict.
– Reconfigured address codes and tightened connectors.

Root Cause: CAN bus address conflict and poor connection.

Required Parts: None (requires reconfiguration).