7.3 Communication Function 1: Computer Link
7.3.1 Computer Link
Overview
Computer link
• The computer link function is to communicate between a computer and PLCs or between PLC and
external devices connected. A proprietary MEWNET protocol called MEWTOCOL-COM is used for
communicating with the computer link. MEWTOCOL-COM is also used for the communication between
the tool software such as FPWIN-GR and the PLC.
• There are a MEWTOCOL master function and a MEWTOCOL slave function for the computer link. The
side that issues commands is called master, and the side that receives the commands, executes the
process and sends back responses is called slave.
Note:
It is necessary to set the system register of the communication port to the computer link for using this
function.
1. Only the slave function is available for the FP-X relay type Ver 1.20 or former version.
2. Both the master and slave functions are available for the FP-X transistor type and relay type (Ver 1.21
or later version), however, the master function is not available for the TOOL port.
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