Patent ID: 8307137

Claim:
A remote communication method of a network, comprising a plurality of control units electrically connected to a plurality of external loadings, each of the control unit comprising a signal converter, a microcontroller and a switch, wherein the microcontroller comprises a universal asynchronous receiver/transmitter electrically and serially connected to the switch, a transmission terminal of a main controller through a receiver and a transmitter therein, the method comprising: using each control unit to receive data sent from the main controller and determining whether the received data is a first, a second or a third packet with the microcontroller in the control unit; turning on the switch by the microcontroller in the control unit and transmitting a response data to the main controller if the received data is identified as the first packet and the main controller attempts to read data from each control unit; executing data write to a corresponding single control unit if the microcontroller identifies the received data as the second packet, and immediately executing data write if a connection index and a target unit address within the second packet are equal; and, executing data write to all control units if the microcontroller identifies the received data as the third packet, and executing data write at any control unit if a target unit address within the third packet is zero.