Considerations restoring an AS-P backup using PCT

[Jonas_Brissman]

Issue

The instance values the Function Block program had when the backup was taken is lost when the backup is restored in an AS-P running in PCT.

Product Line

EcoStruxure Building Operation

Environment

Building Operation Project Configuration Tool (PCT)

Cause

When the program is first initiated, the values for it is written to the database.

If the “Program executions” Is turned off, the instance values the program had when the backup was taken is not read. Hence the values are set to 0.

On a real AS-P, a Cold start is performed after the restoring of the backup.

When restoring a backup on an AS-P in PCT, one or two cold starts are done, followed by an additional warm start at least for the PCT 2.

Resolution

To get the instance values from the backup when it is restored, the “Program execution”/”Enable program” In PCT should be turned on before the restore is done.

Since a warm start is done for the PCT, the issue regarding Retain level vs. FB Backup property needs to be taken into consideration.

https://ecostruxure-building-help.se.com/bms/Topics/show.castle?id=15741&locale=sv-SE&productversion...