Panasonic FP7 Series User Manual page 101

(Note 3) The unit number and COM. port number in the above program is applied when the COM.1 port of the
CPU unit is used.
■
Timing chart
■
I/O allocation (CPU Unit)
COM. port no.
1 2
XC XD
YC YD
Y0 Y1
■
I/O allocation (For Serial Communication Unit)
COM. port no.
1 2 3
XC XD XE
YC YD YE
Y0 Y1 Y2
(Note 1) Each contact is used for reading the operation status. Do not write over it with a user program.
WUME-FP7COM-07
8.3 MODBUS RTU Master Communication (RECV)
Name
0
Master
communication
XE
Clear to send flag
Master
communication
YE
Sending active flag
Sending done result
Y2
flag
Name
4
Master
XF communication clear
to send flag
Master
YF communication
sending active flag
Sending done result
Y3
flag
Turns ON when MODBUS RTU is set for the communication
mode and the unit is in RUN mode.
Turns ON during transmission using SEND/RECV
instructions.
Turns OFF when the sending process is completed.
Reports completion result of sending data in general-purpose
communication or master communication.
(Normal completion: 0, Abnormal completion: 1)
Turns ON when MODBUS RTU is set for the communication
mode and the unit is in RUN mode.
Turns ON during transmission using SEND/RECV
instructions.
Turns OFF when the sending process is completed.
Reports completion result of sending data in general-purpose
communication or master communication.
(Normal completion: 0, Abnormal completion: 1)
Description
Description
8-5