Sixnet ET-GT-485-1 Ethernet To RS-485 Gateway

The Sixnet ET-GT-485-1 EtherTRAK Ethernet-to-RS485 gateway is an industrial bridge that connects RS-485 Modbus devices to an Ethernet network, enabling Modbus/TCP communication across a LAN or WAN. It features a 10Base-T Ethernet interface (RJ45) and a two‑wire RS‑485 port, with earth grounding on a dedicated terminal and power input on terminals 2 and 3. The unit is designed to be powered from 10–30 VDC with typical power consumption around 0.5 W, and it supports Modbus/TCP (Open Modbus) alongside SIXNET’s serial protocols, including Modbus ASCII and Modbus RTU. On the Ethernet side, you connect to a hub with a straight‑through cable or directly to a PC with a crossover cable. Internally, the ET-GT-485-1 maps Ethernet addresses to RS‑485 I/O using sixteen virtual discrete output registers and sixteen virtual analog output registers, enabling straightforward data transfer between an Ethernet master and RS‑485 slaves or vice versa. Typical use cases include linking Modbus RTU/ASCII devices to an Ethernet network, displaying data on an Ethernet-enabled controller or display, and integrating RS‑485 devices into EtherTRAK/RemoteTRAK configurations. Note: this model is listed as obsolete and is no longer manufactured, though it remains in circulation in legacy installations.