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GE VersaMax
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GFK-1504K Chapter 11 Analog Output Modules 11-7
11
IC200ALG320
Analog Output Module, 12 Bit Current, 4 Channels
Scaling
The graph below shows the relationship between the output data that is provided to the
module from the backplane, and the actual output current. The range spans between 4mA
and 20mA.
Count vs Output Current
12.004mA
12.008mA
16024
16016
16008
16000
12.000mA
12.012mA
0 3200 6400 9600 12800 16000 19200 22400 25600 28800 32000
Count
24
20
16
12
8
4
0
mA
32767
8 counts =
4µA
The following equation can be used to calculate specific output currents:
I
out
= 4mA + (count/32760) x 16.38mA
The count value must be a multiple of 8. If the module receives a count value that is not a
multiple of 8, it rounds the value down to the closest multiple of 8. For example:
Count mA
16000 12.000
16007 12.000
16008 12.004
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