Hi expert,
I am able to display trend from my own database table using the DB Table Historian Provider:
histprov:[historyProvider]:/table:[tableName]:/column:[columnName]:/timestamp:[timestampColumnName]:/keycolumn:[keyColumnName]:/keyvalue:[keyColumnValue]
However, I have no idea how to let power chart know which data is of bad quality and have it displayed line break (as in the case of History Tag using BreakLine property). I have tried with inserting NULL value to represent bad qaulity values in the database. But when it was plotted in the power chart, the line didn’t break. I thought of having a seaparate column to save the quality status in the database. Is there anyway I can specify something like :/qualitycolumn to let power chart know that some data has bad quality?
Thank you.