User's Manual

the serial end sent to TCP Clien end

TCP Client

Fig6.4.2..TCP Client

In this mode, the module is connected to the specified domain / IP port. All the data

sent from the TCP Server-side end will be sent directly to the serial port, the data from

the serial end sent to the TCP Server-side. Abnormal network disconnect will cause the

module active reconnect. TCP Active reconnection function enable, TCP Server initiative

disconnected, the module will immediately take the initiative to reconnect, and otherwise

the module will not reconnect.

UDP Server

Fig6.4.3.UDP Server

In this mode, the module opens the local designated port, once received the data

sent to the port, the module will send the data to the serial port, and record the remote ip,

port. The module will record only the last information on the remote connection. Serial

received data will be sent directly to the recorded remote ip, port.

HLK-RM04

UDP Server

UDP Client

HLK-RM04

TCP Client

TCP Server