GFK-1504K Chapter 12 Analog Mixed I/O Modules 12-21
12
IC200ALG432
Analog Mixed Module, 12 Bit +/-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