You manually add trend log records if a log record has been missed and you want to complete the log or to add old values to compare the log record history to.
In WorkStation, in the System Tree pane, select the folder or EcoStruxure BMS server where the trend log is located.
Select the trend log to which you want add a record.
On the Actions menu, point to Modification and then click Add trend log record .
In the Add trend log record dialog box, in the Time stamp box, enter the date and time of the new value.
In the Value box, enter the value.
In the Comment box, type a comment.
Click Add record .
Click Close .
The record is now added to the trend log.