8 Port serial server with MODBUS gateway

MaxGate 300

  • 2 x 10/100Mbps Ethernet ports
  • 8 x RS232/485 serial ports
  • Integrates Modbus TCP and Modbus RTU/ASCII networks
  • Up to 16 MODBUS servers or 32 MODBUS clients on each serial port
  • Industrial grade
  • Din Rail mountable


The MaxGate300 industrial smart gateway is a rugged industrial Modbus gateway with excellent lightning and electromagnetic protection.  It has been designed with high reliability and performance in mind. 

It converts between ModbusRTU/ASCII and Modbus TCP protocols, supports 8-way RS232 or RS485 serial ports, and 2x10/100M adaptive Ethernet ports. MaxGate300 series can be used in power systems, industrial monitoring, traffic management, meteorology, water treatment, environmental monitoring, financial securities, coal mines, petroleum and other industries to complete on-site data collection and transmission, remote monitoring, on-site control and other systemfor a fast networked solution.

Modbus smart gateway / serial server







Technical Notes

Modbus Notes

Modbus TCP / RTU integration

Since its inception in 1979 Modbus has become a widely used communication protocol in the field of industrial automation. Originally based on serial interfaces (RS232 and RS485) Modbus RTU enjoys widespread use throughout many different industries. Since then Ethernet has become the network of choice and many industrial devices now have native Ethernet interfaces.

Data Sheet

Ordering Information

Order Code Description
MG300-8D232 8-way RS232 to 2-way Ethernet Modbus Industrial Smart Gateway
MG300-8D485 8-way RS485 to 2-way Ethernet Modbus Industrial Smart Gateway

More Information