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MELSEC-Q
7 APPLICATION FUNCTIONS
(c) Program example
The following shows an example of a REMFR/REMTO instruction on the
following system design.
It is a program for accessing the buffer memory of Q62DA and Q64AD
mounted to a remote I/O station.
System design
REMFR/REMTO
instruction request source
QX40
QCPU
QY40P
QJ71
LP21
Remote I/O station (Station number 0)
Station number 1
Network No.1
Q62DA
Q64ADQJ72
LP25
Open
REMFR/REMTO
instruction object station
Program example
1) Q62DA
Host baton
pass status
Host data
link status
Station No. 1
baton pass status
Station No. 1
cyclic transmission
status
Station No. 1
parameter
signal status
Network
module
status
1 msec
timer
1 msec
timer
1 msec
timer
1 msec
timer
1 msec
timer
1 msec
timer
1 msec
timer
1 msec
timer
1 msec
timer
1 msec
timer
Communication program for Q62DA
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