Panasonic FP7 Series User Manual page 118

8.4 MODBUS RTU Master Communication (SEND)
■
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.
8-22
Name
0
Master
XE communication
Clear to send flag
Master
YE communication
Sending active flag
Sending done
Y2
result flag
Name
4
Master
XF communication
Clear to send flag
Master
YF communication
Sending active flag
Sending done
Y3
result 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
WUME-FP7COM-07