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4.
LINKING TO THE AnACPU (WITH DEDICATED INSTRUCTIONS)
AND THE AJ71 PT32-S3
MELSEC-A
4.2
Data Communications Processing
The following describes the procedure and the processing time of the data
communications between the A64RDC and AnACPU (with dedicated instruc-
tions).
4.2.1
Communications procedure
The following diagram shows each step of the operation.
AnACPU
AJ71 PT32-S3
master module
A64RDC
,
X1 18
PI.\
I
1
/
\
,
I
I
1
,
,
Automatic
1
1
refresh
I
1
,
.
,
- 1
LEDR
FROMI
K1
I
K6
I
D30
I
K2
,
m l - l
- 1
\
I
.,
Request-to-
registration
information
_-_--_---____-
instruction
information
MINI-S3 link
*
communications
start
j - b
received-data
larea
I
Batch refresh
send data
for remote
terminal
module
Received
data for
remote
terminal
______________-.
/Control
I
4 - 4
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