# X2X module "r" LED single flashes - Mode RESET

**URL:** <https://community.br-automation.com/t/x2x-module-r-led-single-flashes-mode-reset/5839>\
**Category:** How-To & Wikis\
**Tags:** x20\
**Created:** [February 12, 2025, 11:08am UTC](https://community.br-automation.com/t/x2x-module-r-led-single-flashes-mode-reset/5839 "2025-02-12T11:08:03Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![pavel.vavra](https://dub1.discourse-cdn.com/brcommunity/user_avatar/community.br-automation.com/pavel.vavra/32/9893_2.png) [@pavel.vavra](https://community.br-automation.com/u/pavel.vavra)\
**Post date:** [February 12, 2025, 11:08am UTC](https://community.br-automation.com/t/x2x-module-r-led-single-flashes-mode-reset/5839/1 "2025-02-12T11:08:03Z")

</div>

This could be caused by an undersized X2X bus supply. It can happen if a customer adds some X2X modules to an existing configuration. Such a module isn’t recognized on the bus (ModuleOk is FALSE).

 ![image](https://europe1.discourse-cdn.com/brcommunity/original/2X/0/051c4af56b60590f8dc330ff593e527caa054f5d.png)