12-14 VersaMax® Modules, Power Supplies, and Carriers User's Manual – March 2003 GFK-1504K
12
IC200ALG431
Analog Mixed Module, 12 Bit 0 to 10VDC Input 4 Channels and Output 2 Channels
Scaling
The following graphs show the relationship between the voltage applied at the field
terminals and the data values for the module.
Count vs Input Voltage
Volta
e
12
10
8
6
4
2
0
-2
-4
-6
-8
-10
-12
0 8192 16384 24576 32767
Count
5.1225V
5.125V
16408
16400
16392
16384
5.12V
5.1275V
8 counts =
2.5mV
The following equation can be used to calculate counts values:
Counts = (Voltage In) x (3200)
The count value is returned as a multiple of 8. A voltage that would return a count value
(using the above equation) which is not a multiple of 8 will return the next highest multiple
of 8.
Input
Voltage
Count
5.1200 16384
5.1210 16392
5.1220 16392
5.1225 16392
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