Engineering unit converter

Use the engineering unit converter to convert raw data values into scaled values based on a range of customizable values.
TIP: For example, the engineering unit converter can transform values from 0 to 65.535 supplied by a temperature sensor into corresponding values on a scale from -20 to +70. The input of an engineering unit converter is generally a dynamic link to an imported tag.

Input

Properties
Property
Description
Raw min
Minimum raw data value.
Raw max
Maximum raw data value.
Scaled min
Minimum converted value.
Scaled max
Maximum converted value.
Dynamic link mode
Read
Read direction for dynamic link icon
Read from the source node to the parent.
Default for dynamic links defined in NetLogics.
Write
Write direction for dynamic link icon
Write from the parent to the source node.
Read/write
Read and write direction for dynamic link icon
Read from the source node to the parent and write from the parent to the source node.
Default for dynamic links created in
FactoryTalk Optix Studio
 UI.
Source Dynamic link
A variable that contains a raw value to be converted.
This property is available only for converter instances and not converter types.
IMPORTANT: The converter does not operate if you do not specify values in the
Raw min
 and
Raw max
 properties and there is no dynamic link for the input variable.
If...
Then...
Raw min
 and
Raw max
 properties are not set.
The converter assumes that there is an analog variable set in the input via a dynamic link.
Raw min
 and
Raw max
 are set to
Low limit
 and
High limit
 of the input analog variable respectively.
Raw min
 and
Raw max
 properties are set.
The converter considers
Raw min
 and
Raw max
 properties and ignores any
Low limit
 and
High limit
 values of the analog variable input.
Only
Raw min
 or
Raw max
 property is set.
The converter assumes that there is an analog variable set in the input via a dynamic link and ignores the
Raw min
 and
Raw max
 properties.
Raw min
 and
Raw max
 are set to
Low limit
 and
High limit
 of the input analog variable respectively.

Output

A scaled value based on the configured linear conversion.

Example

Instance of an engineering unit converter
Engineering unit converter configuration for Variable1, showing fields for Raw min, Raw max, Scaled min, Scaled max, and a Source Dynamic link to Variable2.
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