5analog input conversion factor, Conversion of real-world inputs into controller – Horner APG RCX HE500RCX404 User Manual
Page 6
PAGE 6
23 MAR 2003
MAN0504-02
OCX404
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Filter
Constant
Digital Filtering. The illustration above demonstrates the effect of digital filtering (set with Fillter
Constant) on module response to a temperature change.
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
Information is subject to change without notice. Cscape is a trademark of Horner APG, LLC.