And here's already another question which I guess is easily answered by the experienced ProView user

How do I save some variables (e.g. Av, Iv objects) to a file from the PLC program. The same variables should be read again from the file at startup. Can this be done with the provided PLC objects or do I need to write some C-code for this kind of stuff?

Ondrej

Hi,

Use Backup objects.

This is handled by the backup process which you configure with a Backup_Conf object in the node hierachy.

/Claes

It's amazing that ProView has an answer to (almost) everyting.

While this actually works I am wondering if the moment the backup happens can be forced, disabling the periodic backup since this would wear out my flash disk. The data I want to store basically only changes once or very rarely.

Ondrej

Sorry, there is no force backup function.

Actually there is one, but when I checked it out it wasn't implemented for Linux. Maybe we can fix this to the text release.

/Claes

Hi Maden,

You can set the cycle time by which the values are backuped. This will savesome wear on your disk. However I don't think you can explicitly force the backup write.

/Robert

Hi all,

I have another question related to this subject. I use a table object in the PLC program and I am currently defining the data in the table statically.

What would be an easy way of reading the data to be put in the table object from a text file dynamically at PLC start?
Any suggestions?

Ondrej