# RTDE setting speed\_slider\_fraction value to 0 **URL:** \ **Category:** Robot Communication\ **Created:** [December 14, 2020, 8:12am UTC](https://forum.universal-robots.com/t/rtde-setting-speed-slider-fraction-value-to-0/10780 "2020-12-14T08:12:10Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![anon43650375](https://avatars.discourse-cdn.com/v4/letter/a/50afbb/32.png) [@anon43650375](https://forum.universal-robots.com/u/anon43650375)\ **Post date:** [December 14, 2020, 8:12am UTC](https://forum.universal-robots.com/t/rtde-setting-speed-slider-fraction-value-to-0/10780/1 "2020-12-14T08:12:10Z")
I’m using the RTDE interface to update the speed\_slider\_fraction value, and it works in most cases. If I try to update the value to 0 it doesn’t work on simulator version 3.14 (CB series), speed slider value only goes down to 2%. But on simulator version 5.9 I was able to update the speed slider value to 0% without any issues. Is this a limitation on CB series robots? Thanks. ---
**Author:** ![mbush](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.universal-robots.com/mbush/32/76_2.png) [@mbush](https://forum.universal-robots.com/u/mbush)\ **Post date:** [December 15, 2020, 1:28am UTC](https://forum.universal-robots.com/t/rtde-setting-speed-slider-fraction-value-to-0/10780/2 "2020-12-15T01:28:50Z")
If you set it to 0 on a real robot that effectively pauses the program. We limit the lowest setting to a value greater than 0 to prevent that issue. ---
**Author:** ![anon43650375](https://avatars.discourse-cdn.com/v4/letter/a/50afbb/32.png) [@anon43650375](https://forum.universal-robots.com/u/anon43650375)\ **Post date:** [December 15, 2020, 4:26am UTC](https://forum.universal-robots.com/t/rtde-setting-speed-slider-fraction-value-to-0/10780/3 "2020-12-15T04:26:20Z")
This limitation is only there on the CB series robots is it? Because I was able to set the speed slider value to 0 on E series robot simulator (v5.9) using the RTDE interface.