The Moxa MGate MB3280 is a 2-port Modbus gateway that bridges Modbus serial networks with Modbus TCP systems. It’s a clean way to connect multiple Modbus RTU/ASCII device lines to Ethernet-based SCADA and monitoring platforms—without replacing your existing field devices.

Why We Love This Product

• Two ports—great for small to mid-sized cabinets with multiple Modbus serial segments
• Bridges Modbus RTU/ASCII devices into Modbus TCP networks
• Enables staged modernisation without ripping out proven Modbus field devices
• Good “right-sized” option between single-port and high-density gateway models

How Our Customers Use It

• Integrating Modbus RTU devices (meters, sensors, drives) into Modbus TCP SCADA
• Connecting two separate serial device chains into one Ethernet backbone
• Reducing serial-only limitations while keeping legacy devices running
• Building cleaner remote monitoring and maintenance workflows over IP

Choosing Tips

• Choose MB3280 when you need 2 Modbus serial ports bridged into Modbus TCP
• If you only need one serial port, the MB3180 is the simpler pick
• If you’re already at (or heading toward) multiple serial segments, consider the 4-port MB3480 to avoid rework later