---
title: "on scan · RUAL Documentation"
description: "Connected function will be executed on enter or if the maxlength is reached. The input will be cleared after every enter or after 1 second of inactivity…"
canonical: https://docs.rual.nl/block-types/User%20Interface/uicomponent_onscan_register
language: en
---

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# on scan

This block is part of the [`User Interface`](https://docs.rual.nl/block-types/User%20Interface) group and was last modified in core [`v13.0.2`](https://docs.rual.nl/core-versions/130002).

Connected function will be executed on enter or if the maxlength is reached. The input will be cleared after every enter or after 1 second of inactivity. The on scan will try to set the element value if an outlet is selected

- flow `flow`

- On scan required `inpinfunction`

- Max length `number`

- Timeout `number` Default `1`

- flow `flow`

## Version history

Introduced in [`v13.0.2`](https://docs.rual.nl/core-versions/130002).

Deprecated since [`v13.0.2`](https://docs.rual.nl/core-versions/130002).

- [Back to `User Interface`](https://docs.rual.nl/block-types/User%20Interface): Return to the main group to view all sub-groups

- [Back to `UI`](https://docs.rual.nl/block-types/User%20Interface?group=UI): Return to the group to view all blocks within this group

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