In a CAN bus network such as at ABUControl, a central CAN bus line runs as the backbone. On both ends of the backbone of the CAN bus line the terminating resistors must be set. This means that disruptions in the CAN bus line can be prevented. Further CAN bus devices of the CAN bus network can be connected on this backbone in a radial manner without terminating resistor to a CAN distributor.

Depending on the crane, the CAN bus network can vary greatly. For example, the position of the LED matrix display must be taken into account, as well as the number of trolleys and the type (twin hoist with two hoist drives per trolley), among other considerations.

This section describes both of the two basic CAN bus networks for cranes with one and with two trolleys. For all other CAN bus networks, contact ABUS Service.

When replacing CAN bus devices:

If faulty CAN bus devices are exchanged (e.g. PLC, CAN distributor, LED matrix displays, etc.), the terminating resistor on the new CAN bus device must be switched the same as it was on the faulty CAN bus device.