> For the complete documentation index, see [llms.txt](https://help.tillit.cloud/tillit/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.tillit.cloud/tillit/knowledge-base/setting-up-tillit/activity-templates/activity/elements/data-types/edge-data.md).

# Edge Data

If you're using a TilliT Edge device, you may want some of your machine data to appear in the activity form.

First, you need to make sure that you have configured the data you need going to the [Create an Edge](/tillit/knowledge-base/setting-up-tillit/edge/edge.md)and assigned it to a [Process Variable](/tillit/knowledge-base/setting-up-tillit/configuration/process-variable.md).

Once you've configured that, using the Edge Data element is easy. Simply define the required Process Variable that the Edge is publishing to.

In the following example, we are using a Process Variable called "Temperature" and the tolerance that is defined on the process variable, though you can define the tolerance elsewhere, or have no tolerance at all.

![](https://s3.amazonaws.com/helpscout.net/docs/assets/60208fd212248b2c96d50eeb/images/6281fa0b8bf21a2e2b6d4506/file-G75BIGT51J.png)

This temperature is from a sensor connected to the PLC, which is feeding the data to the TilliT Edge, recording to the process variable.

From the operators' perspective, we can see that the temperature is 14°C, which was recorded a minute ago. The tick by the target confirms it is within the tolerance allowed and will pass.

![](https://s3.amazonaws.com/helpscout.net/docs/assets/60208fd212248b2c96d50eeb/images/6281fab968d51e7794440954/file-LP1Z7ptqmr.png)

Should the temperature fall outside the allowable tolerance, the tick will change to a warning triangle, letting us know that it will fail.

## Live Process Variable Updates

When a process variable value changes while an operator has a form open — for example, a weight scale taring a value into a PLC — TilliT detects the updated value and displays a notification banner on the relevant field. The banner shows the new value and asks the operator whether they want to overwrite the current entry.

<figure><img src="/files/tgCrwkB0n5ELWRbVAI0C" alt=""><figcaption><p>Notification banner prompting the operator to accept a new process variable value</p></figcaption></figure>

This allows operators to confirm machine-measured values (such as checked weights from a scale) directly into the activity form without manual entry.