Specifications

Analog Input Modules
31007715 6/2008 89
Here is a graphical representation of ideal linear current for a signed input data
range:
In the 0 to 20 mA operating range, an ideal linear current representation (one
without offset or max count adjustments) is interpreted using the formula:
z V
n
= I
ai
x 1 600 (I
ai
in mA) for a signed input data range
z V
n
= I
ai
x 3 200 (I
ai
in mA) for an unsigned input data range
where V
n
is the numerical count and I
ai
is the analog input current
Here is a graphical representation of ideal linear current for a signed input data
range:
16 000
32 000
32 767
4mA
12 mA
20 mA
20.38 mA
V
n
I
ai
I
V
ai
n
0
20.48 mA
20 mA
10
16 000
32 000
32 767
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