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3. SPEclFlcATloNs
/MELSEC
(2)
There are
48
output signals from the PC CPU t o the
AD51.
Output
Uumber
Description
Address
Unused
YOF
May be used by
the PC CPU as extra
Y1F
internal relays
I M ) .
Switched onloff in
the sequence program
and read by
the BASIC program
(known as General-
purpose outputs)
Address
6820H
Address 6800H
This output may be
used to start one task
in the AD51
designated as an
interrupt program by
its task start condition.
Unused
Y2F
(1) Input X1D is switched on when an error
i s detected by
the
AD51 hardware. This signal may be used
as an inter-
lock in the
PC sequence program to control PC accessing
of the
AD51 buffer memory (i.e. FROMITO instructions).
(2)
Switching output
Y29
on will start the task which has i t s
start condition specified
as
"interrupt from
ACPU". The
start condition is defined during "multi task setting".
(3)
Output signals
Y2A t o Y2F are used by the operating
system and must not be switched on or off.
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