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3 SPECIFICATIONS
3 - 27
(a)
Writing/Reading of data by the special variable W@ in a BASIC program
With the special variable W@, the expansion register is designated by ED0
to ED1023. The designation is in 1-word units.
ED0
ED1
ED2
ED3
ED4
ED1021
ED1022
ED1023
Program example
The following shows a program where "123" is written into the QD51 (-
R24)'s expansion register ED0.
150 W@ (ED, 0) =123
QD51(-R24)
Expansion Register
1C00
H
1C01
H
1C02
H
1C03
H
to
1FFC
H
1FFD
H
1FFE
H
1FFF
H
QD51(-R24)
Expansion Register
b15
to
b0
W@
(Reading of data)
W@
(Writing of data)
Special variable W@
ED0
(Writing of data)
ED1
ED2
ED3
to
ED1020
ED1021
ED1022
ED1023
MELSEC-Q
BASIC
program
BASIC
Program
(1-word units)
3 - 27
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