# Smart Light doesn't flash when triggered

**URL:** <https://community.br-automation.com/t/smart-light-doesnt-flash-when-triggered/10276>\
**Category:** Controls & Vision\
**Tags:** smart-camera, smart-light\
**Created:** [February 25, 2026, 1:46pm UTC](https://community.br-automation.com/t/smart-light-doesnt-flash-when-triggered/10276 "2026-02-25T13:46:00Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![Thomas\_Perchthaler](https://avatars.discourse-cdn.com/v4/letter/t/FF8800/32.png) [@Thomas\_Perchthaler](https://community.br-automation.com/u/Thomas_Perchthaler)\
**Post date:** [February 25, 2026, 2:47pm UTC](https://community.br-automation.com/t/smart-light-doesnt-flash-when-triggered/10276/3 "2026-02-25T14:47:50Z")

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Hello Florian,

i trigger it by NetTime

 ![nettime_trigger](https://europe1.discourse-cdn.com/brcommunity/original/2X/f/f85ea135c74f11e81df4f52bb94c2cfa6fae38db.png)

I checked again and it’s mapped like [here](https://community.br-automation.com/t/external-lights-synchronization/4423/2) suggested.

The calculation of the delay is calculated like suggested with PLC\_CYCLIC\_TIME = 400(us)

![nettime_calc](https://europe1.discourse-cdn.com/brcommunity/original/2X/9/9149a908f56914010f0b26cac74af08d56d10708.png)

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