NAiS FP Series, User Manual

Page: 189 / 326

FP
Σ
Communication Function 2 General-purpose Serial Communication
9 - 22
9.3.2 Connection Example with External Device
(1:1 communication with FP series PLC)
Outline
Connect the FP
Σ
and the other FP series PLC using the RS232C interface, and carry
out communication using the MEWTOCOL-COM communication protocol.
Communication mode:
General Communication
Communication
mode: Computer link
FP series PLC
Data area read command
“%01#RDD00000 00001 ** C
R
” transmission
Value of specified data register
Figure 187: FP
Σ
Connection example with external device (FP series PLC)
When the data area read command “%01#RDD00000 00001
**
C
R
” is sent from the FP
Σ
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
C
R
” is sent as a response to the command.
If there is an error, “%01! OO
**
C
R
” is returned (OO is the error code).
In addition to data area read and write commands, the MEWTOCOL-COM is also
provided with contact area reading and writing, and many other commands.
Communication cassette used with 1:1 communication
The following types of communication cassettes can be used with 1 : 1 general-purpose
serial communication.
Name Description Part No.
FP
Σ
Communication cassette
1-channel RS232C type
This communication cassette is a 1-channel unit with a
five-wire RS232C port. It supports 1 : 1 computer links and
general-purpose serial communication. RS/CS control is
possible.
FPG-COM1
FP
Σ
Communication cassette
2-channel RS232C type
This communication cassette is a 2-channel unit with a
three-wire RS232C port. It supports 1 : 1 computer links
and general-purpose serial communication. Communica-
tion with two external devices is possible.
FPG-COM2