Tag/Property calls - Control Limit

3rd Party Modules
1

In the enterprise level of the production tree where control limits can be created, it seems that tag and property calls are not possible and will break the definition. When trying to call these values if the control line value in the control charts will be nulled out.

Is there any way to call property values? I tried doing event.source and that also breaks the control limit line.

Could you add property and tag binding functionality to the control limit definitions?

2

It will work. If you are using the new system.tag.read() scripting function, keep in mind that it returns a qualified value. Simply add .value to the qualified value returned by the read function to get the true value.

Example:

tagValue = system.tag.read("[Default]Status/MyTag") print tagValue.value