Remote communication method

The invention discloses a remote communication method. The remote communication method comprises the following steps: acquiring states of all online equipment connected with an upper computer; the upper computer marshals all the online devices to obtain number information; the upper computer sends the serial number information of each piece of online equipment and the serial number information of the online equipment adjacent to each piece of online equipment to each piece of online equipment; the upper computer judges whether each piece of online equipment is online or not; if it is judged that at least one offline device exists, the online device adjacent to the offline device is set to be a relay device, and the offline device communicates with the upper computer through the relay device. The remote communication coverage range can be widened, and the remote communication cost can be reduced. 本发明公开了一种远程通讯方法。该远程通讯方法包括：获取与上位机连接的所有在网设备的状态；所述上位机对所有所述在网设备进行编组，得到编号信息；所述上位机将各个所述在网设备以及与各个所述在网设备相邻的在网设备的所述编号信息发送给各个所