Multiplexed data

Multiplexed signals defined in the DBC file (see fig. Multiplexed Signals) are accepted into the Prepared DBC Signals node as normal signals.

The demultiplexing procedure is carried out as follows on arrival of the corresponding CAN message:

• if the message contains multiplexed signals, the multiplexer of the message is evaluated and only the signals that the frame contains are copied according to the multiplexer.
• Multiplex signals not contained in the frame are not updated

The multiplexing procedure (when transmitting messages), is initiated by changing a multiplexed signal before transmitting the message:

• If the signal that was changed is a multiplexed signal, the signal is copied to the corresponding position in the frame and the multiplexer signal is set to the multiplex value of this signal.
• The CAN frame is sent.