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MELSEC-Q
5 COMMUNICATION USING GENERAL-PURPOSE INPUT/OUTPUT
5
The following describes the input device X viewed from the PLC CPU when the
starting address is .
Input Device X of Sequence Program
Signal Name
Values specified by
Special Variable B@
X00 + to X0F +
Not used
X10 + to X1A +
Can be used as a general-purpose input
&H00 to &H0A
X1B +
Multitask Execution Start
&H0B
X1C +
Multitask Execution Stop
&H0C
X1D +
Communications Module System Down
&H0D
X1E + to X1F +
Cannot be used, since it is used by the system
X20 + to X2F +
Can be used as a general-purpose input
&H10 to &H1F
X1B+ , X1C+ , and X1D+ should not be turned ON or OFF by the user since the
system turns them ON or OFF.
X1E+ and X1F+ 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 a
communications module.
If the starting address is 60
H
, the input device viewed from the PLC CPU is
X00+ to X0F+ 60 to X6F
X10+ to X1A+ 70 to X7F
X1B+
X7B
X1C+
X7C
X1D+
X7D
X1E+ • X1F+
X7E • X7F
X20+ to X2F+
X80 to X8F