User Manual
Industrial Ethernet Serial Gateway
Modbus Serial/TCP Series
WWW.SSTCOMM.COM
4
1 Product Overview
1.1 Product Function
Modbus Serial/TCP series gateway can achieve the interconnection between Ethernet (Modbus TCP protocol)
devices and serial (Modbus RTU/ASCII) devices. The Modbus Serial/TCP series gateway supports dual Ethernet
ports, built-in switch; the serial side supports single/dual/four serial port. Each port supports both RS485 and
RS232, but the same product can only achieve one type of port, users can specify the port according to actual
needs when ordering.
Modbus Serial/TCP series gateway products type list:
Product Type
Ethernet end protocol
Serial protocol
Serial number
GT200-MT-RS
Modbus TCP
Modbus RTU/ASCII
Single serial port
GT200-MT-2RS
Modbus TCP
Modbus RTU/ASCII
Dual serial port
1.2 Product Features
Operating mode:
Modbus RTU/ASCII slave mode: Modbus TCP masters communicate with Modbus RTU/ASCII slaves
through the gateway;
Modbus RTU/ASCII master mode: Modbus RTU/ASCII masters communicate with Modbus TCP salves
through the gateway.
Dual Ethernet interface , built-in switch, support cascade , can be used in a ring network ,save field
connection cables and switches;
GT200-MT-RS: One RS485 interface or RS232 interface, 1KV electromagnetic isolation;
GT200-MT-2RS: Two RS485 interfaces or RS232 interfaces, 1KV electromagnetic isolation;
Ethernet 10/100M self-adaptive;
Slave ID mapping function;
