6.3 USB Port
6.3.1 Functions of USB Port
With the USB port, the FP-X offers one communication mode as below.
Computer link
• Computer link is used for communication with a computer connected to the PLC. Instructions
(command messages) are transmitted to the PLC, and the PLC responds (sends response messages)
based on the instructions received.
• A proprietary MEWNET protocol called MEWTOCOL-COM is used to exchange data between the
computer and the PLC. There are two different communication methods, 1:1 and 1:N communication. A
1:N network is called a C-NET. The maximum of 99 FP-X units can be connected with one personal
computer.
• The PLC answers automatically to the commands received from the computer, so no program is
necessary on the PLC side in order to carry out communication.
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