5 Replies Latest reply on Aug 29, 2014 1:12 PM by Gregor

    ptclassrev - What exactly is it?

    pisupportduke

      I am developing an application to parse PI Base Subsystem audit files and e-mail the results daily. So far, I've processed point edits and classic point additions and deletions. Today, I started on totalizers. To that effect, I created a totalizer tag, forced a backup and then ran pidiag -xa to generate an XML output. When reading through the attributes, I found ptclassrev. What exactly is it? I searched documentation that shows it exists, but what is its purpose and what would an effective description be?

        • Re: ptclassrev - What exactly is it?

          Hello Alex,

           

          Based on the attribute name I believe this is the Point Class Revision. I was hoping to find the confirmation in the PI Server documentation but it just lists the ptclassrev attribute. I also found information that this is a read only point attribute of type string. With PI "Base" is the basic point class. "Classic" & "Totalizer" have been derived from "Base". It's possible to create custom point classes but this feature is rarely used. I've never heard somebody revised a PI point class but I am still learning - day by day.