2 serial port, RS232 RS485 RS422 three-in-one.Device Server with Modbus; | Realize transparent transmission between TCP/UDP data package and RS232/RS485/RS422 interface; | Voltage range of 5~36V DC, Modbus RTU to Modbus TCP, CTS/RTS, XON/XOFF. | Support Modbus multi-host polling, support Modbus RTU to Modbus TCP, DHCP and DNS. | Support Built-in Webpage, Httpd Client and Websocket and network printing and watchdog mechanism.

Support DHCP/DNS | Support built-in webpage | Upgrade firmware via network | Supports RS232/RS485/RS422 port ( Can’t be used at one time) | Work mode: TCP Server, TCP Client, UDP Client, UDP Server, HTTPD Client Baud rate of serial port can be configured from 600 bps to 230.4 Kbps

USR-DR301 is a tiny size RS232 to Ethernet converter, which can realize the bidirectional transparent transmission between RS232 and Ethernet. | Realize bidirectional transparent transmission between RS232 and Ethernet?Support Modbus gateway | DIN-rail mounting: Small size, easy to manage and maintain, cost-effective | Virtual serial software: Solve the problem of PC software as a serial port can not communicate with networking device. | USRIOT Cloud: USR-DR301 can realize the bidirectional transparent transmission between the server and terminal device through USRIOT Cloud quickly.

USR-TCP232-ED2 Triple Serial Device Server, UART TTL to Ethernet/TCPIP Module Converter, Support D2D Forwarding | Auto-MIDX function, discretionarily connect cross-over or direct network cable, automatic switching | Support TCP Server, TCP Client, UDP, UDP Server, HTTPD Client,websocket, various of ethernet protocols | Support virtual serial port, provide corresponding software | Support DHCP, automatically access IP, can inquire the facility within network through the UDP broadcast protocol(using software USR-TCP232-E45 Setup)