Specifications

Analog Output Modules
300
31007715 6/2008
Each data word allows you to represent analog output current data with either
signed integer values ranging from -32 767 to 32 767 or with unsigned integer
values in the range 0 to 65 534.
Linear current representations can be interpreted using the formula:
where Vn is the numerical count and Iao is the analog output current.
Here is an example in signed output data format
Values greater than 32 000 produce over-range indications.
I
ao
V
n
2000
------------
⎝⎠
⎛⎞
4+=
for signed data
I
ao
V
n
4000
------------
⎝⎠
⎛⎞
4+=
for unsigned data
I
V
ao
n
32 767
32 000
16 000
4mA
UCW
UCE
3.5 mA
-1 000
12 mA
20 mA
20.38 mA
OCE
OCW
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