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Timing chart
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I/O allocation (CPU Unit)
COM. port no.
Name Description
1 2 0
XC XD XE
Master communication
Clear to send flag
Turns ON when MEWTOCOL-COM is set for the
communication mode and the unit is in RUN mode.
YC YD YE
Master communication
Sending active flag
Turns ON during transmission using SEND/RECV instructions.
Turns OFF when the sending process is completed.
Y0 Y1 Y2
Sending done result
flag
Reports completion result of sending data in general-purpose
communication or master communication.
(Normal completion:0, Abnormal completion: 1)
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I/O allocation (For Serial Communication Unit)
COM. port no.
Name Description
1 2 3 4
XC XD XE XF
Master
communication Clear
to send flag
Turns ON when MEWTOCOL-COM is set for the
communication mode and the unit is in RUN mode.
YC YD YE YF
Master
communication
Sending active flag
Turns ON during transmission using SEND/RECV
instructions.
Turns OFF when the sending process is completed.
Y0 Y1 Y2 Y3
Sending done result
flag
Reports completion result of sending data in general-
purpose communication or master communication.
(Normal completion: 0, Abnormal completion: 1)
(Note 1) Each contact is used for reading the operation status. Do not write over it with a user program.
7.4 MEWTOCOL-COM Master Communication (SEND)
7-16 WUME-FP7COM-07
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