Configures historical data storage for a scalar
 quantity or element in a one-dimensional vector. (Datastorage
 History).

 In a relational database, data resides in
 two-dimensional tables known as relations. A relation
 consist of rows and columns.

 The SevHist object specifies which quantity is to be
 stored and in which relation. Up to three different
 relations can be specified.
 Hints

 If the storage concern signal values SevHist is
 configured in the development environment often direct
 below the current signal object.

• SevHistObject
• SevHistThread
• SevHistMonitor
• SevHistServer

 Optional desription.

 Specifies the complete name of the attribute whose
 value is to be stored.

 SevHistThread object that specifies the storage scantime
 and in which server the data is stored.

 Time the data will be stored in the database.
 Data that is older than this time will be removed from
 the database by a garbage collector.

 The deadband is a range around the last stored value, where no new values
 will be stored, i.e a value has to differ more than the deadband / 2 from
 the last stored value to be stored.

 Deadband contains the size of deadband. Note that the DeadBand bit in options also
 has to be set to activte the deadband function.

 Storage options.

 Disable storage.

 Trigger a storage when event controlled storage is configured.
 Trigger can be set from the application or from a process graph,
 and when it has been detected by the rt_sevhistmon process, it
 will be reset by this process.

 To configure even controlled storage, set Event in Options.

 Curve window layout.