The gateway DAT 3580- MBTCP access to connect the Modbus RTU tools of a RS 485 network to the Ethernet network through the Modbus TCP protocol. With telnet interface, it can configure all the Modbus TCP and the Modbus RTU that both have side options. This tool has a complete isolation between lines that allows the application even in the tough environmental conditions. The DAT3000 series devices are designed to be easily mounted on DIN rail, optimizing the space encumbrance. While the thermal dissipation allows it, the devices can be mounted on both sides in which allows a relevant reduction of space needing. This device has the connections which are designed by means of removable screw terminals to simplify the managing of the tools.