The GT100-EI-RS is an EtherNet/IP to Modbus gateway. It connects multiple Modbus devices to the EtherNet / IP network. The gateway acts as a Modbus master and EtherNet/IP adapter to connect up to 32 devices with RS485 or one device with RS232. Independent between EtherNet/IP network and Modbus network. Ethernet 10/100M self-adaptive. IP address conflict detection. Supports ODVA standard EtherNet/IP communication protocol. Supports RS485 and RS232 on serial interface, half duplex, baud rate: 1200,2400, 4800, 9600, 19200,38400, 57600, 115200 bps optional, check bit: None, odd, even, mark and space optional; 1 or 2 bit stop bit optional. Act as Modbus Master at Modbus side: Supports function code 01H, 02H, 03H, 04H, 05H, 06H, 0FH, 10H Supports at most 48 Modbus commands, Modbus function 03H, 04H, 06H, 10H support byte exchange function, convenient for resolving the format problem of big-endian and small endian between two network data. Under universal mode, support frame timeout, frame length and delimiter control mode, automatic sending function. 1KV galvanic isolated on two RS485 or RS232 interfaces. EtherNet/IP maximum input/output bytes: Maximum input bytes: 492 bytes (Under universal mode, maximum input bytes is 256 bytes) Maximum output bytes: 492 bytes (Under universal mode, maximum output bytes is 256 bytes) Power supply: 24VDC (11V-30V), 90mA (24VDC). Operating Temp.: -40°F to 140°F (-40°C to 60°C); Rel. Humidity: 5%-95% (non-condensing). Dimension (W*H*D): 0.98in*3.94in*3.54in (25mm*100mm*90mm). Mounting: DIN Rail Mounting (35mm). https://www.sstautomation.com/Products/EtherNet_IP/Modbus_EtherNet_IP/GT100-EI-RS_V31.html