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V530-R2000
User’s Manual
SECTION 7
Host Communications
§
Ladder Programming Example
§
Example of Incorrect Ladder Programming
Bit outputs will not be possible if the Read Area is set to I/O under
System Set./Com
Mode
in the Controller and the following type of ladder programming is used.
Settings at the Controller
Item
Setting
Read Area
I/O
Begin read word
0100
Write Area
DM
Begin Write Word
0110
MOV(021)
#0010
D0100
W0.00
DIFU(013)
W0.00
I:2.00
MOV(021)
#0021
D0100
W0.01
DIFU(013)
W0.01
I:2.01
MOV(021)
#0022
D0100
W0.02
DIFU(013)
W0.02
I:2.02
One-shot Reading
Switch to read condition
number 1.
Switch to read condition
number 2.
I:2.00
100.04
The read command 0010 will remain set in
the Read Area and reading will be execut-
ed continuously.
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