Panasonic AFP7CPS4E User Manual page 75

 Timing chart
Master communication
Clear to send flag
(XC, XD, XE, XF)
Master communication
Sending active flag
(YC, YD, YE, YF)
Execute RECV
Master communication
Sending done result flag
(Y0, Y1, Y2, Y3)
Sending data
Response reception
processing
 I/O allocation (For CPU Unit)
COM port no.
1 2 0
XC XD XE
YC YD YE
Y0 Y1 Y2
 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.
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7.3 MEWTOCOL-COM Master Communication (RECV)
Confirm ON
Confirm OFF
Name
Master
communication Clear
to send flag
Master
communication
Sending active flag
Sending done result
flag
Name
4
Master
XF communication
Clear to send flag
Master
YF communication
Sending active flag
Sending done result
Y3
flag
Conditions to enable execution of RECV
instruction
Clear to send flag (XC, XD, XE, XF): ON
Sending active flag (YC, YD, YE, YF): OFF
Sending active flag (YC, YD, YE, YF):
Sending data: ON, Sending done: OFF
Sending done result flag (Y0, Y1, Y2, Y3):
Normal completion: OFF
Abnormal completion: ON
Explanation
Turns ON when MEWTOCOL-COM, MEWTOCOL7, or
MODBUS-RTU is set for the communication mode, and the unit
is in the RUN mode.
Turns ON during sending data based on SEND/RECV
instruction.
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)
Explanation
Turns ON when MEWTOCOL-COM, MEWTOCOL7, or
MODBUS-RTU is set for the communication mode, and the
unit is in the RUN mode.
Turns ON during sending data based on SEND/RECV
instruction.
Turns OFF when the sending process is completed.
Reports completion result of sending data in genera-purpose
communication or master communication.
(Normal completion: 0, Abnormal completion: 1)
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