Horner APG SmartStack I/O HE-ADC920* - Manual (Page 5)

MAN0317-09 10 NOV 2006 PAGE 5
ADC920
Information is subject to change without notice. SmartStack is a trademark of Horner APG, LLC.
5 INPUT CONVERSION FACTOR
The following table describes how real-world inputs are scaled into the controller. Given a known input
voltage, the data value is configured by using the conversion factor from the table. The following formula
is used:
Data = Voltage In (Vin) / Conversion Factor
Example: The user selects avoltage range of 0 to +5 VDC:
1) The known input voltage is 3 VDC.
2) Using the table, the conversion factor for the voltage range of 0 to +5 VDC is 0.00015625.
3) To determine the data value, the formula is used:
Data = Vin / Conversion Factor
19200 = 3 VDC / 0.00015625
Conversion of Real-World Inputs into Controller
Selected Voltage
Range
Voltage In (Vin) VDC Data Out Conversion Factor
+5.11 32704
+5.00 32000
0 0
NA NA
0 to +5.00 VDC
NA NA
0.00015625
+20.47 32736
+20.00 32000
0 0
NA NA
0 to +20 mA
NA NA
0.000625
+115 1150
0 0 °C
-37 -370
0.1
+240 2400
0 0 °F
-35 -350
0.1