2-port RS232/422/485 Modbus Gateway MG-120 Datasheet Manual Firmware FeaturesSerial InterfaceTwo DB9 interfaces support RS232, 2-wire RS485, 4-wire RS485 and RS422 standardsAsynchronous serial data rates up to 921600bpsEthernet Interface1-port 10/100BASE-TX RJ45 with auto MDI/MDI-X functionManagement FunctionBuilt-in IP-based Web interface and telnet interface for remote managementSoftware Protocol supports Modbus TCP, Modbus RTU, Modbus ASCII, IP, ARP, DHCP and DNSSupports RTU Master, RTU Slave, ASCII Master, and ASCII Slave four serial operation modes via management interfaceMaster mode supports 32 TCP slave connection requestsSlave mode supports 32 TCP master connectionsPLANET Modbus Gateway utility for finding client device on the networkPLANET Smart Discovery utility automatically finds the client devices on the networkFirmware upgrade/configuration backup and restore via HTTP protocolCase and Installation-10 to 60 degrees C operating temperatureReset button for resetting to factory default