MULTIPLEX COMMUNICATING METHOD

摘要

When a communication control circuit (52) and a CPU core (53) wake up after detecting a variation of the input from an input load (60) connected with its node, frame transmission of wake up is performed from the node through a transmission line (4). At the time of wake up upon receiving a frame from another node through the transmission line (4), frame transmission of wake up is not performed from the node, the increase of the traffic is reduced at the time of wake up, data can be communicated immediately in a normal operating mode, and high speed data communication is realized.