Horner APG RCX HE500OCX003 - Manual (Page 6)

PAGE 6 19 MAR 2003 OCX003
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5 ANALOG INPUT CONVERSION FACTOR
The following table describes how real-world inputs are scaled into the controller. Given a known input
current, the data value is configured by using the conversion factor from the table. The following formula
is used: Data = Input Current (mA) / Conversion Factor
Example:
The user selects a current range of ±20mA:
1.
The known input current is 14mA.
2. Using the table, the conversion factor for the current range of ±20mA is 0.000625.
3. To determine the data value, the formula is used:
Data = Input Current (mA) / Conversion Factor
22400 = 14mA / 0.000625
Conversion of Real-World Inputs into Controller
Selected Range Input Register Data Conversion Factor
+20.00 32000
0.00 0 ±20mA
-20.00 -32000
0.000625
+10.00 32000
0.00 0 ±10 V
-10.00 -32000
0.0003125
6 DIGITAL INPUT / OUTPUT CHARACTERISTICS
6.1
Digital Input
35VDC
0
.125(
±±15%) V -A
Digital Input Chart