Hi All,
Has anyone had this issue?
I have some tags where the value falls outside their EngHigh/EngLow range and they are triggering the tag quality - "Uncertain("Uncertain_EngineeringUnitsExceeded: The value is outside of the range of values defined for this parameter.")" . That makes sense, but it also annoying that it causes the unknown overlay on perspective
.
I was reviewing the tag property Engineering Limit Mode, which is set with No_Clamp. Supposedly 'Off' means the limit is ignored but how do I select 'Off'?
This is version 8.1.48
If you don't need the clamp, remove the values from clampHigh and clampLow?
Right click the tag, select "Edit (raw)", right click "engLimitMode", click "Delete".
This makes the propery dissapear and make it fall to the default value set to Ignition.
The tags are not being clamped, its just causing uncertain tag quality when its outside the Engineering Low/High Limit range.
When doing the "Edit (raw)", engLimitMode is already missing. (from my UDT definition and UDT instance). 
Do you have engineering limits defined on the Ignition tag? Is this an OPC tag from a third party OPC UA server?
Ok, I think the advice you got here won't help you.
As far as I can see, the only place Ignition uses QualityCode.Uncertain_EngineeringUnitsExceeded is as the target mapping for OPC UA StatusCode Uncertain_EngineeringUnitsExceeded.
This means it's the OPC UA server you are receiving this value from that is sending Uncertain_EngineeringUnitsExceeded along with it. Nothing you can do on the Ignition side to change or ignore that.
You could maybe make an expression tag that ignores the quality or something like that, though.
hmmm, yea I was naturally assuming its coming from Ignition, because thats were I defined some limits. But yea, absolutely could be some on the OPC server also, so I'll dig into that. Thanks Kevin 
If you configure limits and clamping on the Ignition side I'm pretty sure you end up with Bad_OutOfRange instead.
Yep your correct.
Using Ignition's OPC Quick Client, I can see the same Uncertain_EngineeringUnitsExceededquality is being passed from the OPC Server.
Hopefully we can correct the OPC server. Otherwise, will mask it in Ignition.
Thanks again Kevin
