Can you please confirm if there is any way to use AF attributes for limits/thresholds for defining/configuring multistate limits instead of hard coding the limits in PI Vision ?
Thanks in advance !
Regards,
Basavakumar Jigalur
Can you please confirm if there is any way to use AF attributes for limits/thresholds for defining/configuring multistate limits instead of hard coding the limits in PI Vision ?
Thanks in advance !
Regards,
Basavakumar Jigalur
You can use AF attribute traits to do this. Check out the link for details.
Hi Basavakumar_Jigalur:
One of the ways I have gotten this to work is to create a parallel attribute that points to the status attribute, but has a 'Value Type' of Int16. The digital state is a string in the status attribute, but the digital state is an integer in the parallel attribute. The parallel attribute can then be used to set the multistate values in PI Vision.
As (Missing Content) alluded to, you can use the various limit traits to do this. Simply create child attributes with the appropriate attribute trait. Then you can change the values in AF stored in those attributes to adjust the limits.
Another approach would be to use an attribute with an enumeration set with the various states as the multi-state source. You can then use a formula, analysis, or any other source to dynamically write the state you want to that attribute. This allows you to have a ton more flexibility for how to arrive at a certain state. This is the approach that we use:
Christoph Rose I have already set the limits in PI AF on attribute within an event frame template but in PI Vision I am not seeing these limits show up. Is there an additional step needed to be able to see the limits in PI Vision?
Limits for attributes won't show up in Event Frames, but they will show up for multi-state of regular symbols.
They work on the Event Frame Table. If you are trying to use a value symbol with an associated Event Frame, they do not work.