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4.
LINKING TO THE AnACPU (WITH DEDICATED INSTRUCTIONS)
AND THE AJ71 PT32-S3
MELSEC-A
(6)
If a communications-completed response signal to the send executed to
the A64RDC is not transmitted back, the
CPU goes into infinite-wait
status unless
the CPU module is reset. To prevent this, provide a
monitoring timer to allow retransmission
of the same data
at preset
intervals.
TO
Y(n+O)
+
H
i
- 1
LED6
I
Automatically goes ON
when the PRC instruction
to start communications is
executed.
Received-
data clear
completed
{LEDC]
(D)
1
LEDR
[
TOP
[
(nl)
I
K858
I
(n2)
I
K1
TOP
I
(nl)
I
K859
I
(n3)
I
K1
Corresponding
FROMrO
instructions in the request-to-
'
communicate registration
areas are cleared.
Request-to-send signal
Y(n+O) is turned
OFF.
Request-to-send signal
r - - - - - - l
'
K 2 0 F -
L - - - - -
I
W
I
Device
D
Device D+l
Data stored in the remote
terminal receiveddata areas of
the master module is cleared.
.
Communications allowance
time set by the user
X(n+23), Y(n+O), and Y(n+23) are the control
1/0 signals for an
AJ71 PT32-S3 (see Section 4.3.2 for details).
The contents
o f
(nl), (n2), (n3), and (D) designated by each instruction
are given below.
(nl): Higher two digits
of the head
1/0 number assigned to an
AJ35PT32-S3
Example : "12H" when assigned to X/Y120 to 13F.
(D) : Data when the bit that corresponds to the processing to be
suspended is set for
"1
'I.
b15 to b l l b10
to b8 b7 to b4 b3
to
b O
I
,
,
I
,
,
T
T
Transmission to remote
terminal
module
No. 1 suspended.
Transmission to remote terminal
module No.
2 suspended.
Transmission to remote terminal
module No. 8 suspended.
b15 to
b l 1 b10
to
b8 b7 to b4
b3 to
bO
Transmission
to
remote terminal
module No. 9 suspended.
I
Transmission to remote
terminal
module No. 10 suspended.
Transmission to remote terminal
module No. 14 suspended.
4 -
31
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