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5.
LINKING TO AN ACPU AND AN AJ71 PT32-S3
MELSEC-A
(1)
Communications processing of control I/O signals
(a) Turning ON the MINI-S3 communications start signal of the master
module from the PC CPU starts the MINI-S3 data link.
(b) Control input signals from the A64RDC are automatically stored in
the batch refresh received-data area
of
the master module.
(c) Control input signals stored in the batch refresh received-data area
are read to designated devices by the
FROM
instruction.
(d) Device output signals are stored in the batch refresh send-data area
so that the devices designated by the TO instruction correspond to
the control output signals
of
an A64RDC.
(e) Control output signals stored in the batch refresh send-data area are
transmitted to the A64RDC.
ACPU
115 Reset switch ON-detected flag
+
134 AD conversion READY
F
Reset switch ON-
detected flag reset
-e-
FROM1 H O
\
K10
l
K4
I
MSO
l
K2
A64RDC
~ 1 ~ 1 . ~ 3
link
Set station
No.
: 1
Occupied stations
: 4
master module
d
4ddress
Batch refresh received-data areas
Station 2
Station 1
l l l x x x x x x x x x x x x x x x x
1F
1 E
1D
IC
18 1A
91
18 17
16
15
14
13
12
11
10
Station
4
T
Station 3
Address
Batch refresh send-data areas
Station 2
Station 1
l o
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
~
l
F
~
E
~
D
/
C
~
B
~
A
/
9
~
8
~
7
~
6
~
5
~
4
~
3
~
?
~
1
~
0
]
11
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
1 F
1 E 1D
1C
1B 1A 91
18
17
16
15
14 13 12 1 1 10
Station
4
Station
3
Control input signais
Reset switch
ON-detected
Control output signals
I
YO
I
1
Reset switch
5 - 6
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