USR-TCP232-306
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Technical Support: h.usriot.com Jinan USR IOT Technology Limited

Technical Support: h.usriot.com

Technical Support: h.usriot.com 10/100Mbps Ethernet port, support Auto-MDI/MDIX. Support TCP Server, TCP Client, UDP Client, UDP Server, HTTPD Client. Support Baud rate from 600bps to 230.4bps; Support None, Odd, Even, Mark, Space. Support heartbeat packet and identity packet. Support RS232, RS485 and RS422. Support web server, AT command and setup software to configure module. Support timeout reset function. Support TCP Client non-persistent function. Support DHCP/Static IP. Support software/hardware reload. Support virtual serial port with USR-VCOM software.

Technical Support: h.usriot.com 1. Get Start Product link: http://www.usriot.com/p/serial-rs232-rs485-rs422-to-ethernet/ Setup software: http://www.usriot.com/usr-m0-setup-software/ Figure 1 Download Page If you have any question, please submit it back to customer center: http://h.usriot.com Figure 2 Application diagram Jinan USR IOT Technology Limited

Technical Support: h.usriot.com 1.2. Hardware Design 1.2.1. Hardware Dimensions Figure 3 Hardware dimensions Default NC, can be used as power pin Jinan USR IOT Technology Limited

Technical Support: h.usriot.com Figure 5 RS422/RS485 pin definition RS422: R+/R- are RS422 RXD pins and T+/T- are RS422 TXD pins. RS485: A/B are RS485 RXD/TXD pins. Status On: Power on Off: Power off Flash a period every one second: Working normally Flash a period every 200ms: Upgrading status Off: Not working LED for Link function. Link function can only work in TCP Client/Server mode. TCP connection established, LINK on; TCP connection disconnect normally, LINK off immediately; TCP connection disconnect abnormally, Link off with about 40 seconds delay. Enable Link function in UDP mode,...

Technical Support: h.usriot.com 2. Product Functions This chapter introduces the functions of USR-TCP232-306 as the following diagram shown, you can get an overall knowledge of it. Serial port packaging TCP Server/TCP Client/UDP Server/UDP Client/HTTPD Client Identity packet Serial Port Device Serial port Serial port heartbeat packet Network heartbeat packet Network Serial port packaging HTTPD protocol packaging HTTPD GET/POST HTTPD Client Mode Serial AT command Parameter Query/Set AT Command Mode Figure 7 Product Functions diagram 2.1. Basic Functions 2.1.1. Static IP/DHCP There are two...

Technical Support: h.usriot.com Figure 8 Static IP/DHCP 2.1.2. Restore default settings Hardware: User can press Reload over 5 seconds and less than 15 seconds then release to restore default settings. Software: User can use setup software to restore default settings. AT command: User can enter AT command mode and use AT+RELD to restore default settings. 2.1.3. Upgrade Firmware Version User can contact to salespersons for needed firmware version and upgrade by setup software as follow: Figure 9 Upgrade firmware version Jinan USR IOT Technology Limited

Technical Support: h.usriot.com 2.2. Socket functions TCP232-306 socket support TCP Server, TCP Client, UDP Server, UDP Client and HTTPD Client. 2.2.1. TCP Client TCP Client provides Client connections for TCP network services. TCP Client device will connect to server to realize data transmission between the serial port and server. According to the TCP protocol, TCP Client has connection/disconnection status differences to ensure reliable data transmission. TCP Client mode support Keep-Alive function: After connection is established, module will send Keep-Alive packets about every 15...

Technical Support: h.usriot.com 2.2.2. TCP Server TCP Server will listen network connections and build network connections, commonly used for communication with TCP clients on a LAN. According to the TCP protocol, TCP Server has connection/disconnection status differences to ensure reliable data transmission. TCP Server mode also support Keep-Alive function. TCP232-306 work in TCP Server mode will listen local port which user set and build connection after receiving connection request. Serial data will be sent to all TCP Client devices connected to TCP232-306 in TCP Server mode...

Technical Support: h.usriot.com 2.2.3. UDP Client UDP transport protocol provides simple and unreliable communication services. No connection connected /disconnected. Jinan USR IOT Technology Limited

Technical Support: h.usriot.com In UDP Client mode, TCP232-306 will only communicate with target IP/Port. If data not from target IP/Port, it won’t be received by TCP232-306. In UDP Client mode, if user set remote IP as 255.255.255.255, TCP232-306 can broadcast to entire network segment and receive broadcast data. After firmware version 4015, 306 support broadcasting in same network segment.(Such like xxx.xxx.xxx.255 broadcasting way). User can set TCP232-306 in UDP Client mode and related parameters by setup software or web server as follows: Jinan USR IOT Technology Limited

Technical Support: h.usriot.com 2.2.4. UDP Server In UDP Server mode, TCP232-306 will change target IP every time after receiving UDP data from a new IP/Port and will send data to latest communication IP/Port. User can set TCP232-306 in UDP Server mode and related parameters by setup software or web server as follows: Jinan USR IOT Technology Limited

Technical Support: h.usriot.com 2.2.5. HTTPD Client In HTTPD Client mode, TCP232-306 can achieve data transmission between serial port device and HTTP server. User just need set TCP232-306 in HTTPD Client and set the HTTPD header, URL and some other related parameters, then can achieve data transmission between serial port device and HTTP server and don’t need care about the HTTP format of data. User can set TCP232-306 in HTTPD Client mode and related parameters by web server as follow: Figure 14 HTTPD Client 2.3. Serial port TCP232-306 support RS232/RS485/RS422. User can refer to 1.2.2....

Technical Support: h.usriot.com 2.3.2. VCOM Application User can download VCOM software from http://www.usriot.com/usr-vcom-virtual-serial-software/. Through this software user can set up connection between TCP232-306 and virtual serial to solve the problem that traditional equipment PC software used in serial port communication way. 2.3.3. Serial Package Methods For network speed is faster than serial. Module will put serial data in buffer before sending it to network. The data will be sent to Network as Package. There are 2 ways to end the package and send package to network - Time...