I would like users to be able to select from a set of choices (option menu) the data source for Trend's two traces (Trend.Attribute1 and Trend.Attribute2).
It seems like CStoAttrRefP may be able to do this?

I have not been able to figure out the syntax needed to refer to and change these two attributes. I would appreciate some example guidance!

Hi Bruce,

The objects for the Ge dynamics are not stored in the database and can't be modified from the plc. They are stored in the pwg-file for the graph and can normally not be changed in runtime.

Another way to achieve this could be to use a Folder (or Window object with the command 'set subwindow'). In this case you need to create a number of graphs with a Trend and with the different attributes.

/Claes

Is it possible to issue an Xtt command from PLC? (Directed at a Graph)

I would like to issue a 'set subwind' Xtt command based on some logic.

You can trigger the execution of an xtt command from the plc with the dynamic DigCommand.

/Claes