6.1 Functions and Types
6.1.1 Communication Modes and Communication Ports
On the FP-X0, four different communication modes are available.
According to the communication mode to be used, the usable communication ports vary.
Communication mode
Computer link
MEWTOCOL slave Tool port FP-X0 All models
MEWTOCOL master COM port (RS485 port) L40MR and L60MR only
General-purpose serial communication Tool port FP-X0 All models
COM port (RS485 port) L40MR and L60MR only
PC(PLC) link COM port (RS485 port) L40MR and L60MR only
MODBUS RTU COM port (RS485 port) L40MR and L60MR only
6.1.2 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.
- 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.
6.1.3 General-purpose Serial Communication
- With general-purpose serial communication, data can be sent back and forth between an external
device connected such as an image processing device and a bar code reader.
- Reading and writing of data is done using a ladder program in the FP0R, while reading and writing of
data from an external is handled through the data registers.
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