PI - quality management

Discussion created by fcirrito on Dec 18, 2013
Latest reply on Dec 18, 2013 by Gregor

I need to assign the value of a PI tag written by an application, a numerical label that indicates the quality.


I know the flag "Questionable", "Annotated", "Substituted", "annotation" and the digital set SYSTEM.


I've read  http://vcampus.osisoft.com/discussion_hall/development_with_osisoft_sdks/f/8/p/3322/17977.aspx#17977.


The use of annotation significantly increases the size of PI archive.


If I use one tag for the value and one for the quality, the number of PI tags employed will double (with consequent licensing problems).


What is the best practice suggested by OSI?