%ARC_Derivation function

Function
The function returns the value derivation of specified object of Historical value type.
Declaration
REAL %ARC_Derivation(
      in archObject
 )

Parameters
archObject Name of object of Historical value type.

Description
The function returns the value derivation of the object specified by the parameter archObject.

Derivation is the increase (decrease) in value per second and may be expressed as follows:

(curr. value - prev. value) / (curr. value time - prev. value time)

i.e. previous value subtracted from current one and the result is divided by the result of the previous value time subtracted from current value time.

Related pages:

Functions for calculated historical values
Function arguments - types

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