The Modbus Server firmware was designed to provide enhanced connectivity for OPC servers and applications that require Modbus/RTU communication from Ethernet TCP/IP or COM ports directly to serial ports. A COM port redirector, such as the Comtrol Serial Port Redirector, can be used with Modbus Server to provide COM port access. While standard gateways provide connectivity for only one application per serial port, Modbus Server provides connectivity for up to six applications per serial port. Modbus Server can be loaded onto any DeviceMaster UP, DeviceMaster PRO, DeviceMaster RTS, or DeviceMaster Serial Hub model.

Modbus Server firmware supports:

Modbus/RTU masters over Ethernet TCP/IP (or COM port with a serial port redirector) controllers
Modbus/RTU serial slave(s) devices

Modbus Server is recommended in installations that require only Modbus/RTU connectivity directly to a serial port and do not require the more advanced routing features found in Modbus Router.

You can use the Modbus Server Installation Overview for installation procedures.

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