Characteristics of PLC module in Ethernet communication: PLC module supports a wide range of network protocols. 1. Standard communicataTlon: mainly used for transmitting structured data. The PLC module is an industrial Ethernet communication standard that complies with ISO/IES9506-4, providing an open communication standard that can connect products from various manufacturers. 2. S5 compatible communication (S5 compatTlble CommunicaTlon): This communication includes the following protocols: ① ISO transmission protocol: The ISO transmission protocol of the PLC module supports ISO based sending and receiving, making communication between devices on the I industry Ethernet very easy. This service supports large amounts of data transmission, up to 8KB. ② TCP: The transmission control protocol in TCP/IP, providing data communication. ③ UDP: (User Datagram Protocol) provides S5 compatible communication protocol, suitable for simple, cross network data transmission, without data confirmation messages, but can ensure the correctness of detection data.