# Tag path vs. OPC Item Path

**URL:** <https://forum.inductiveautomation.com/t/tag-path-vs-opc-item-path/88784>\
**Category:** Ignition\
**Tags:** perspective\
**Created:** [April 13, 2024, 10:34pm UTC](https://forum.inductiveautomation.com/t/tag-path-vs-opc-item-path/88784 "2024-04-13T22:34:38Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![G\_Andrus](https://avatars.discourse-cdn.com/v4/letter/g/d26b3c/32.png) [@G\_Andrus](https://forum.inductiveautomation.com/u/G_Andrus)\
**Post date:** [April 13, 2024, 10:34pm UTC](https://forum.inductiveautomation.com/t/tag-path-vs-opc-item-path/88784/1 "2024-04-13T22:34:38Z")

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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?

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [April 13, 2024, 10:39pm UTC](https://forum.inductiveautomation.com/t/tag-path-vs-opc-item-path/88784/2 "2024-04-13T22:39:24Z")

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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.

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**Author:** ![G\_Andrus](https://avatars.discourse-cdn.com/v4/letter/g/d26b3c/32.png) [@G\_Andrus](https://forum.inductiveautomation.com/u/G_Andrus)\
**Post date:** [April 14, 2024, 3:25am UTC](https://forum.inductiveautomation.com/t/tag-path-vs-opc-item-path/88784/3 "2024-04-14T03:25:33Z")

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Thanks. That helps.