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MELSEC-Q
7 PROGRAMMING FOR EXECUTING THE MASTER FUNCTION
Transmitting node (QJ71DN91 master)
Receiving node (QJ71DN91 slave)
1)
2)
3)
7)
4)
5)
6)
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\
\
\
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\
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Transmit complete
flag: 703H
Transmit request
flag: 903H
Transmit complete
flag: 703H
Transmit
data
Master function
transmit data: 900H
Transmit
request
flag: 903H
Transmit
request
flag: 903H
Receive complete
flag: B03H
Receive complete
flag: B03H
Receive completion
notification
flag: C03H
Slave function
receive data
:B00H
Receive data
Receive
completion
notification
flag
:C03H
Receive
completion
notification
flag
:C03H
Stores transmit data in Master
function transmit data area.
Sets Transmit request flag.
Resets Transmit request flag.
Reads receive data from Slave
function receive data area.
Sets Receive completion
notification flag.
Resets Receive completion
notification flag.
1) Transmission command turns on.
2) Data in D0 to D2 are stored in the transmit data area (address: 900
H
to
902
H
).
3) Upon completion of storing the transmit data, the transmit request flag
(address: 903
H
) turns on.
4) The master function transmit data are sent through I/O communication,
and the receive complete flag (address: B03
H
) turns on.
5) Data in the receive data area (address: B00
H
to B02
H
) are stored in
D100 to D102.
6) Upon completion of storing the data into D100 to D102, the receive
completion notification flag (address: C03
H
) turns on.
7) When data are received on the receiving node, the transmit request
flag (address: 903
H
) turns off.
Summary of Contents for QJ71DN91
Page 1: ...DeviceNet Master Slave Module User s Manual QJ71DN91 GX Configurator DN SW1D5C QDNU E ...
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