Panasonic FP2

FP2 Serial Data UnitCommunication with External Devices
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4.4 Sample Program
4.4 Sample Program
4.4.1 Sample Program <FP series PLC (MEWNETCOL−COM)>
Connect the serial data unit and the FP series PLC, using the RS232C interface, and
carry out communication using the MEWTOCOL−COM communication protocol.
FP2
FP series PLC
Data area read command
“%01#RDD00000 00001** C
R
” sent
Value of specified data register
SDU
SD RD ERR SD RD ERR AL
COM.1COM.2
COM.1(RS232C)
COM.2(RS232C)
When the data area read command “%01#RDD00000 00001** C
R
” is sent from the FP2
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$RD6400C800F1C
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.
Wiring diagram
Connection with the FP0 COM port
1
Pin No.
Abbrev.
Symbol
FP2 serial data unit side (9 pins)
FP0 COM port side (3 pins)
2
3
4
5
6
7
8
9
FG
SD
RD
RS
CS
SG
CD
ER
S
R
G
Protective ground
Sent data
Received data
Request to send
Clear to send
Signal ground
Received line signal detector
Data terminal ready
Signal name
Not used
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