1:1 communication with FP Series PLC
Overview
Connect the FP-X and another FP series PLC using the RS232C interface and the MEWTOCOL-COM
communication protocol.
Note:
The MEWTOCOL master function of computer link is recommended as it is easy to
communicate.
•
When the data area read command “%01#RDD00000 00001**
CR
” is sent from the FP-X side, the
values of the data register of the PLC connected to the system are sent as a response. For example, if
the value K100 is stored in DT0 and the value K200 is stored in DT1 of the PLC,
“%01$RD6400C8006F
CR
” is sent as a response to the command. If there is an error, “%01!
○○
**
CR
” is
returned (
○○
is the error code).
•
In addition to data area read and write commands, MEWTOCOL-COM also provides contact area read
and write as well as many other commands.
System register settings of FP series PLCs (FP0 side)
In the default settings, the COM port is set not to be used. For 1:1 general-purpose serial communication,
the system registers should be set as shown below.
Communication format settings for FP series PLC (FP0 side)
No.
Name
Set Value
No. 412
Selection of communication mode for COM port Computer link
No. 413
Communication format for COM port
Data length: ……
Parity check: …..
Stop bit: …………
Terminator: ……..
Header: …………
8 bits
Odd
1 bit
CR
STX not exist
Note) These settings should be the
same as the settings of the
connected FP-X.
No. 414
Baud rate setting for COM port
19200 bps
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