GE VersaMax IC200PWR002 - Page 323

10-8 VersaMax Modules, Power Supplies and Carriers User's Manual GFK-1504N
10
IC200ALG230
Analog Input Module, 12 Bit Voltage/Current 4 Channels
Count and Input Voltage
Voltage
12
10
8
6
4
2
0
-2
-4
-6
-8
-10
-12
0 8192 16384 24576 32767 Unipolar
-32768 -16384 0 +16383 +32767 Bipolar
Count
Unipolar
Bipolar
2.5mV
5.0mV
24
16
8
0
0V
7.5mV
2.5mV = 8 counts
5.1225V
5.125V
16408
16400
16392
16384
5.12V
5.1275V
2.5mV = 8 counts
The following equations can be used to calculate counts values:
Bipolar voltage: Counts = ( +Voltage In) x (3200)
Unipolar voltage: Counts = ( +Voltage In) x (3200)
For a change in the reported count value to be seen, input voltage must be
increased by at least 2.5mV. If the module receives an increase less than
2.5mV, the previous count value is still reported. For example:
Voltage
Count
5.1200V
16384
5.1220V
16384
5.1225V
16392
Input Defaults
The module’s analog input (%AI) data can be configured to either hold last state
or to go to a configured value if an error causes the inputs to default.
If the module is auto-configured, the input default is 0.