COMMUNICATION PROCESSING SYSTEM AND COMMUNICATION SYSTEM

PROBLEM TO BE SOLVED: To improve synchronization accuracy.SOLUTION: A communication processing system 100 comprises: a communication unit 10 electrically connected to a pair of electric wires 31 and 32; and a plurality of communication devices (slave devices 20) that are electrically connected to the pair of electric wires 31 and 32, and communicate with the communication unit 10 on the basis of a change in voltage between the electric wires 31 and 32, or a change in current flowing through the pair of electric wires 31 and 32. Each of the plurality of communication devices is assigned a unique address. The communication unit 10 transmits an operation instruction signal including an address and an operation content of an operation target communication device to the plurality of communication devices. Upon receiving an operation instruction signal including its own address from the communication unit 10, each of the plurality of communication devices transmits a response signal corresponding to the operation content to the communication unit 10. Apart from the operation instruction signal, the communication unit 10 simultaneously transmits a synchronization signal for synchronizing the plurality of communication devices with the communication unit to the plurality of communication devices.SELECTED DRAWING: Figure 1 【課題】同期の精度を向上させる。【解決手段】通信処理システム１００は、一対の電線３１、３２に電気的に接続される通信ユニット１０と、一対の電線３１、３２に電気的に接続され、一対の電線３１、３２間の電圧の変化又は一対の電線３１、３２を流れる電流の変化に基づいて通信ユニット１０と通信する複数の通信装置（子機２０）と、を備える。複数の通信装置には、それぞれ固有のアドレスが割り当てられる。通信ユニット１０は、動作対象の通信装置のアドレス及び動作内容を含む動作指示信号を、複数の通信装置へ送信する。複数の通信装置の各々は、通信ユニット１０から自身のアドレスを含む動作指示信号を受信すると、動作内容に応じた応答信号を通信ユニット１０へ送信する。通信ユニット１０は、動作指示信号とは別に、複数の通信装置を通信ユニットと同期させるための同期信号を複数の通信装置へ一斉に送信する。【選択図】図１