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5.
LINKING TO AN ACPU AND AN AJ71 PT32-S3
MELSEC-A
(2) Writing data to the A64RDC buffer
(9
Command data and write data (such as the write execution command
to the A64RDC) are stored in the remote terminal send-data area by
the TO instruction.
(9) By execution of the SET YO instruction, instruction data and write
data stored in the remote terminal send-data area are transmitted
to
the A64RDC.
(h) When data is written to the A64RDC buffer and internal processing
is completed, a communications-completed signal is transmitted
back to the master module.
When the master module has received the communications-com-
pleted signal, the send-completed signal (XO) goes ON.
(3)
Reading data from the
A64RDC buffer
(i) Command data (such
as the read execution command from the
A64RDC) is stored in the remote terminal send-data area by the TO
instruction.
(j) By execution
of the SET
YO instruction, read command data stored
in the remote terminal send-data area is transmitted to the A64RDC.
(k) When the A64RDC has received the command data and after internal
processing is completed, the read data is transmitted to the remote
terminal received-data area of the master module and a communica-
tions-completed signal is transmitted back.
When the master
module has received
the communications-completed signal, the
send-completed signal (XO) goes ON.
(I)
After confirming that the send-completed signal is
ON, read data
stored in the
remote terminal received-data area
of the master
module is read by the FROM instruction.
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