Specifications

Analog Input Modules
190
31007715 6/2008
In the 4 to 20 mA operating range, an ideal linear representation of analog input
current (one with default offset and maximum count) is given by the following
formula:
where C
n
is the numerical count and I
ai
is the analog input current.
In the 0 to 20 mA operating range, an ideal linear representation of analog input
current (one with default offset and maximum count) is given by the following
formula:
C
n
= (I
ai
- 4 mA) x 2000
UCW
UCE
12 mA
20.38 mA
0
4mA
3.62 mA
20 mA
-767 16 000 32 000 32 767
I
ai
C
n
OCE
OCW
C
n
= I
ai
x 1600
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