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3 SPECIFICATIONS
3 - 29
(c) Writing/Reading data by the FROM/TO command in a sequence program
With the FROM/TO command, designate the expansion register by the
address. The designation address is 1C00
(Writing of data)
Sequence
Program
(Reading of data)
Program example
The following shows a program where "123" is written into the
expansion register address 1C00
signal (X0B) is ON.
To write data from the programmable controller CPU to the expansion
register or to read data from the expansion register, use the multitask
execution start signal (X0B) as an interlock.
Write
Command X0B
Sequence
(Writing of data)
Program
(1-word units)
QD51(-R24)
Expansion Register
b15
1C00
H
TO
1C01
H
1C02
H
1C03
H
1C04
H
to
FROM
1FFD
H
1FFE
H
1FFF
H
when the multitask execution start
H
Interlock that enables or disables FROM/TO execution.
QD51(-R24)
Expansion Register
TO
1C00
H
1C01
H
1C02
H
1C03
H
to
1FFC
H
1FFD
H
1FFE
H
1FFF
H
MELSEC-Q
to 1FFF
, in 1-word units.
H
H
to
b0
ED0
ED1
ED2
ED3
ED4
to
ED1021
ED1022
ED1023
T0 H0 H1C00 K123 K1
ED0
ED1
ED2
ED3
to
ED1020
ED1021
ED1022
ED1023
3 - 29
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