Omron CJ1W-DA08C

263
Ratio Conversion Function Section 6-8
The relationship between the analog input and the analog output is expressed
by the following conversion equations.
Positive Gradient
Conversion
(Analog output) = A x (Analog input) + B
A: Ratio set value 0 to 99.99 (BCD)
B: Bias 8000 to 7FFF (16-bit binary data)
The following example is for an I/O range of –10 to 10 V.
Constant A: 0050 (0.5)
Constant B: 0190 (2.0 V)
Analog input: –10 to 10 V
Analog output = 0.5
× (–10 to 10 V) + 2.0 V
= –3.0 to 7.0 V
Negative Gradient
Conversion
(Analog output) = F – A x (Analog input) + B
F: Output range maximum value
A: Ratio set value 0 to 99.99 (BCD)
B: Bias 8000 to 7FFF (16-bit binary data)
The following example is for an I/O range of 0 to 10 V.
Constant A: 1000 (10.0)
Constant B: 0068 (0.5 V)
F: 10 V (output range maximum value)
Analog input: 0 to 1 V
Analog output = 10 V – 10
× (0 to 1 V) + 0.5 V
= 10.5 to 0.5 V
X
Y
A =
Y
X
B
A
Analog output
Analo
g
input
F+B
A
X
Y
A =
Y
X
Analog output
Analo
g
input