● All of the relays can be used to monitor 16-bit words.
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Precautions for use
● If an ON or OFF status of one of the relays composing the memory area changes, the
memory area value will also change.
2.6.8 WI, WO
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How WI, WO works
● Relays (IN, OT) can be handled as blocks of 16 points.
● These are one-word (16-bit) memory areas, thus they can be treated as data memory.
● The composition of the word-unit memory areas is shown below. Each element has a
corresponding number, as shown below.
WR0
INF INE IND INC INB INA IN9 IN8 IN7 IN6 IN5 IN4 IN3 IN2 IN1 IN0
WR1
IN1F IN1E • • • • • • • • • • • IN12 IN11 IN10
WR2
IN2F IN2E • • • • • • • • • • • IN22 IN21 IN20
2.6 Description of the memory area
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