# Rev. counter lost for axis 5

**URL:** <https://tech-community.robotics.abb.com/t/rev-counter-lost-for-axis-5/4947>\
**Category:** Robot Controller\
**Created:** [June 21, 2012, 9:08pm UTC](https://tech-community.robotics.abb.com/t/rev-counter-lost-for-axis-5/4947 "2012-06-21T21:08:01Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Simotion](https://avatars.discourse-cdn.com/v4/letter/s/c89c15/32.png) [@Simotion](https://tech-community.robotics.abb.com/u/Simotion)\
**Post date:** [June 21, 2012, 9:08pm UTC](https://tech-community.robotics.abb.com/t/rev-counter-lost-for-axis-5/4947/1 "2012-06-21T21:08:01Z")

</div>

Is it possible that the revolution counter is lost for one axis when the robot has had a crash, and the controller has not been switched of?

Or what could be the different reasons for a revolution counter not been updated anymore?