J1939 Communication interface – Address claiming and static addresses

If there is more than one J1939 CAN interface in the Fischer Panda CAN bus, each interface needs a different bus address. This is achieved by “Address Claiming”, in which the bus sharing units negotiate addresses with each other.

In some applications, it may be necessary for a CAN interface to have a fixed static address that never changes. For example, two parallel generators that are clearly distinguishable so that they can be started separately by a higher-level controller.

For these applications, an offset can be added to the start address with the rotary coding switch of the CAN interface. If an offset other than zero is set, the address claiming is deactivated. The device participates with its static address on the bus. Download a PDF on this Topic.