# Reading OPC data

**URL:** <https://forum.inductiveautomation.com/t/reading-opc-data/10331>\
**Category:** General Discussion\
**Created:** [August 11, 2015, 9:13am UTC](https://forum.inductiveautomation.com/t/reading-opc-data/10331 "2015-08-11T09:13:07Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![nifemi](https://avatars.discourse-cdn.com/v4/letter/n/a5b964/32.png) [@nifemi](https://forum.inductiveautomation.com/u/nifemi)\
**Post date:** [August 11, 2015, 9:13am UTC](https://forum.inductiveautomation.com/t/reading-opc-data/10331/1 "2015-08-11T09:13:07Z")

</div>

Hello all,

I recently had to read and manipulate data from a device that supports browsing. After connection, data was visible in the designer’s OPC browser… But in order to access the data within module code, I had to create tags, and then read/subscribe to those tags. This made me wonder if i’m missing something.

Is it possible to subscribe to data directly from a device that supports browsing, without creating tags at all?

Thanks.

---

<div class="post-metadata">

**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [August 11, 2015, 12:41pm UTC](https://forum.inductiveautomation.com/t/reading-opc-data/10331/2 "2015-08-11T12:41:41Z")

</div>

You can read, using system.opc.readValues, but you can’t subscribe.