Specifications

13 – Configuring Reports

282 R400

D (History Standard Deviation)

Purpose

Used to calculate the standard deviation of history values of a point and to store

the standard deviation in a Free Format variable.

Format

Index

Point_ID Parameter Print_Format

[

History

Type(Offset) Repeat

]

Description

Index

The number (1-999) identifying report variable to store standard deviation.

Point_ID

Point name of the analog point.

Parameter

As described for entry type F. Only history parameters are permitted.

Print_Format

As described for entry type F.

[History Type],

[

Offset

],[

Repeat

]

As described for entry type F.

Example

D 2 SINEWAVE PV F8.2 H6M(10) 5

In the above example, five values of “6 minute history” for Point SINEWAVE

(offset 14 to offset 10) are retrieved. The standard deviation of these values is

stored in Index 2 and printed as a floating point number.