GE VersaMax Manual page 372

Scaling for Bipolar Outputs
The graph below shows the relationship between the output voltage measured at the field
terminals and the data that is output by the module, when outputs are set up for the bipolar
range.
Count vs Output Voltage, Bipolar
Voltage
12
10
8
6
4
2
0
-2
4
-6
-8
-10
-12
-32000 -25600 --19200 12800 -6400 0
Voltage can be calculated using the following equation:
Vout = ( (analog counts x 20.48) / 65536 )
The count value must be a multiple of 4. If the module receives a count value that is not a
multiple of 4, it rounds the value down to the closest multiple of 4. For example:
GFK-1504K Chapter 11 Analog Output Modules
Analog Output Module, 13 Bit Voltage 8 Channels
6400 12800 19200 25600 32000
Count
Count Voltage
16024 5.0075V
16026 5.0075V
16028 5.00875V
IC200ALG325
4 counts
= 1.25mV
5.0100V
5.00875V
16032
5.0075V
16028
5.00625V
16024
16020
11-27
11