Converts real value scaled between specified tag's engineering zero and engineering full scale, to a raw integer value (0 - 32000).
Instant Trend data is stored in generic format. i.e. as a raw integer with range 0 - 32000.
Scaled value to convert to raw integer 0-32000.
Name of tag whose eng zero and eng full scale values rValue is scaled between.
Value scaled between 0-32000.