Is it possible to access PI Processbook data via DDE server ?
Processbook doesn't store any data from the PI Points that it displays. It is just a visualization tool. If you are trying to get PI Point data, you will need to get the data from the PI Data Archive. We have a few PI Developer Technologies that you can use for that purpose depending on the standard that you are using. You can find more information in the link below.
Retrieving data ...