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3. Instructions
CS/CJ/NSJ Series Instructions Reference Manual (W474)
Data Control Instructions
3
SCL2
z Scaling 1 to 5-V Analog Input to –200 to 200
In the following example, it is assume that an analog signal from 1 to 5 V is converted and input to CIO
2005 as 0000 to 0FA0 hexadecimal. SCL2(486) is used to convert (scale) the value in CIO 2005 to a
value between –0200 and 0200 BCD.
When CIO 0.00 is ON, the contents of CIO 2005 is scaled using the linear function defined by ∆X
(0FA0), ∆Y (0400), and the offset (07D0). These values are contained in D100 to D102, and the result is
output to D200.
X
∆
P1:
P1+1:
P1+2:
0400 (∆Y)
P1
R
0FA 0
D100
D101
D102
∆
Y
Offset
Contents of R (D200)
Offset
07D0 Hex
Contents of S (CIO 200)
0FA0 Hex
(∆X)
0.00
D100
D200
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