​.UpdateTrend Dotfield

The .UpdateTrend dotfield triggers an update to a historical trend. Using the .UpdateTrend dotfield in a button action script, the operator can manually update the trend during run time.

Category

Historical.

Usage

HistTrendTag.UpdateTrend

Parameter

HistTrendTag

HistTrend tag assigned the name of the trend.

Remarks

Historical trends do not automatically update. A change must be made to either the .ChartStart or the .ChartLength dotfields to update the chart and show the current values for the specified tags. By using this dotfield in a button action script, the operator can update the chart during run time. You can also use this dotfield in a QuickScript if other dotfields associated with the historical trend are going to be changed.

You should only set the .UpdateTrend dotfield to a value of 1.

Data Type

Discrete (write only).

Valid Values

1

Example

This example triggers the historical trend associated with the MyHistTrendTag tag to update with the current values of all parameters.

MyHistTrendTag.UpdateTrend=1;