Tag path vs. OPC Item Path

Ignition
1

I've got a Perspective project with go-by samples. There are several Flex Containers with Components for Flow Rate, Temperature, Volume Today. Each component has a Parameter called "tagpath" with and Expression binding to {view.params.tagPath} + "/FLOW_RATE" <--- or Degrees, or MSCF. Where will that Expression binding point to, or get data from?

In the Tag Browser there is a tag for Rate with an OPC Item Path of
ns=2;s=CELLULAR.AAA_TankBattery_BTY.GasFlow

Okay, my question: In the description above, is there any type of connection between the "tagpath" and the OPC Item Path for the Rate tag?

2

No connection. OPC Item Paths are properties of OPC tags, without regard to how the tag is used in a user interface.

Parameterized tag paths are used to allow parts of a user interface to be used for more that just one target system or subsystem. Typically the tagpath parameter would be initialized to the path to a folder or UDT instance that contains tags named FLOW_RATE or Degrees or MSCF or whatever. That piece of the user interface can be applied to any part of the system that has tags with those names as leafs in a tree.

3

Thanks. That helps.