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5 COMMUNICATION USING GENERAL-PURPOSE INPUT/OUTPUT
Output Device Y in the Sequence
Program
Y00 +
to Y0F +
Y10 +
to Y20 +
Y21 +
to Y28 +
Y29 +
Y2A +
to Y2F +
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The following describes the output device Y viewed from the PLC CPU when the
starting address is .
(However, it can be used as a substitute for internal relay
Can be used as a general-purpose output
(BASIC Task No. 1 through BASIC Task No. 8)
Cannot be used since it is used by the system.
Y2A+ through Y2F+ cannot be used by the user since it is used by the system. If it
used (ON/OFF) by the sequence program, its functions may not be guaranteed as an
AD51H unit.
If the head address is 60
Y00+
Y10+
Y21+
Y29+
Y2A+
• Y00+ through Y0F+ • • • Not used.
(However, it can be used as a substitute for internal relay <M>)
It can be used as a substitute for internal relay (M) in the sequence program.
Signal Name
Not used
(M) in the sequence program)
Startup Program Designation
Program Startup
, the output device numbers are
H
to Y0F+
Y60 to Y6F
to Y20+
Y70 to Y80
to Y28+
Y81 to Y88
Y89
to Y2F+
Y8A to X8F.
It cannot be communicated
with the communications
module.
MELSEC-Q
Value designated by
Special Variable B@
&H00 to &H10
&H11 to &H18
&H19
&H1A to &H1F
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