# Reset rapid variable at reboot

**URL:** <https://tech-community.robotics.abb.com/t/reset-rapid-variable-at-reboot/9106>\
**Category:** RAPID Programming\
**Created:** [September 16, 2019, 9:50am UTC](https://tech-community.robotics.abb.com/t/reset-rapid-variable-at-reboot/9106 "2019-09-16T09:50:32Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![e\_tip](https://avatars.discourse-cdn.com/v4/letter/e/ec9cab/32.png) [@e\_tip](https://tech-community.robotics.abb.com/u/e_tip)\
**Post date:** [September 16, 2019, 9:50am UTC](https://tech-community.robotics.abb.com/t/reset-rapid-variable-at-reboot/9106/1 "2019-09-16T09:50:32Z")

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Hi,  
i ask to the operator to input a number at the begin of the day, this value should be used all day long so i used PERS, because VAR are reset every program launch.  
Unfortunately i need to reset this value when, in the morning, i turn on my controllers.  
Is there a proc that is called only at boot time ? or any other way to achieve this ?

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**Author:** ![lemster68](https://dub1.discourse-cdn.com/flex005/user_avatar/tech-community.robotics.abb.com/lemster68/32/1945_2.png) [@lemster68](https://tech-community.robotics.abb.com/u/lemster68)\
**Post date:** [September 16, 2019, 10:08am UTC](https://tech-community.robotics.abb.com/t/reset-rapid-variable-at-reboot/9106/2 "2019-09-16T10:08:33Z")

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Use a power on event routine. Check the manual.