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,...
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.
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.
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.-
ZL
.
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L
9.
COMMUNICATIONS IN THE NO-PROTOCOL
MODE
',
MELSEC-A
(5)
Using a
FROMnO
instruction to access the AJ71 C24
A
FROM/TO
instruction to access the AJ71C24 from a PC CPU should
only be used when absolutely necessary.
This is because when data is transmitted from the AJ71C24 to an
external device at the same time a
FROM/TO
instruction from a PC CPU
to the AJ7l C24 is executed, the
FROM/TO
instruction has priority and
is processed first.
This delays the data send time from the AJ71C24 by how long
it
takes
to process the
FROM/TO
instruction.
9-5
.
..
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