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The image below shows an example of how Modbus RTU Devices could would be connected to through the Moxa gateway.

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The gateway uses male DB9 serial ports to connect to the Modbus RTU or ASCII devices.

Each port supports three serial interfaces: RS-232, RS-422 and RS-485 (both 2 and 4 wire) with the pinout shown below:

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MGate Configuration

Initial Configuration Access

Moxa provide a Windows based utility that can be used to connect to the MGate and aid in configuring the unit. But the MGate also provides a native web UI that provides the same functionality from any operating system. Out of the box the MGate will have the following default TCP/IP address and default Account and Passwords:

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Temporarily set your computer’s Ethernet domain to the 192.168.127.xxx domain. Once you have done that you should be able to open a web browser and then browse to http://192.168.127.254. That should result in the following web page to appear:

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After you enter the default admin/moxa credentials you will be prompted to enter a new password. 

Setting a Static IP Address

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