Specifications

Analog Input Modules
120
31007715 6/2008
where V
n
is the numerical count and I
ai
is the analog input current:
However, in systems that require calibration, the formula may actually
be:
(In a perfectly calibrated system, a = 32 000 and b = 0.)
For example, you use the Advantys configuration software to calibrate an offset of
+64 at 0 mA and a max count 0f 31 744 at 20 mA, the system could be represented
as follows:
I
32 760
32 000
15 mA
20.475 mA
20 mA
24 000
ai
V
n
0
V
n
aI
ai
× b+=
I
32 760
32 000
9V
20.475 mA
20 mA
ai
V
n
c
a
l
i
b
r
a
t
e
d
64
31 872
u
n
c
a
lib
r
a
t
e
d
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