StartHistoryReadExReq Object

The StartHistoryReadExReq object is used in:

Properties

Property SubType Read Only Description Variant

Count

Integer

No

Sets the number of values in the array.

 

Direction

Integer

No

Sets the direction in which the points should be returned.

 

RollupPeriod

Integer

No

Sets the rollup period of the value entry. Rollup period refers to the quantity of units in a period. For example, to rollup 30 days, the RollupPeriod is 30 and the RollupUnit is "days."

 

RollupType

Integer

No

Sets the rollup type of the value entry. The possible values are listed on the CxRollupType enum table.

 

RollupUnits

Integer

No

Sets the rollup units of the value entry. This refers to time increments, such as seconds, minutes, hours, or days. The possible values are listed on the CxRollupUnits enum table.

 

TagString

Variant

No

Sets the tag string for a history point tag.

Tag strings are stored in an indexed array as HistoryTagStringEx objects.

Example

Write to the fifth tag string: MyVhsArray.TagString(5) = myHistTagStringEx

HistoryTagStringEx

TimeStampEnd

Date

No

Sets the timestamp for the ending history record of a time period for a given point. This field is an array of Date subtypes. The timestamp is set in Local time without milliseconds.

 

TimeStampEndMs

Date

No

Sets the timestamp for the ending history record of a time period for a given point. This field is an array of Date subtypes. The timestamp is set in Local time with milliseconds.

 

TimeStampEndRaw

Date

No

Sets the timestamp for the ending history record of a time period for a given point. This field is an array of Date subtypes. The timestamp is set in UTC time with milliseconds.

 

TimeStampStart

Date

No

Sets the timestamp for the starting history record of a time period for a given point. This field is an array of Date subtypes. The timestamp is set in Local time without milliseconds.

 

TimeStampStartMs

Date

No

Sets the timestamp for the starting history record of a time period for a given point. This field is an array of Date subtypes. The timestamp is set in Local time with milliseconds.

 

TimeStampStartRaw

Date

No

Sets the timestamp for the starting history record of a time period for a given point. This field is an array of Date subtypes. The timestamp is set in UTC time with milliseconds.

 

TopOfDayHour

Integer

No

Sets the offset value to use if the subunit to the major unit (i.e. hours to a day) does not start at the time unit expected. For example, to accommodate contract days starting at 5 AM, the TopOfDayHour would be 5 (indicating 5 hours from midnight).

 

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