# No Limit on RTDE Speed Slider

**URL:** <https://forum.universal-robots.com/t/no-limit-on-rtde-speed-slider/15753>\
**Category:** Report a Bug\
**Created:** [August 3, 2021, 7:46pm UTC](https://forum.universal-robots.com/t/no-limit-on-rtde-speed-slider/15753 "2021-08-03T19:46:23Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![anon38369556](https://avatars.discourse-cdn.com/v4/letter/a/edb3f5/32.png) [@anon38369556](https://forum.universal-robots.com/u/anon38369556)\
**Post date:** [August 3, 2021, 7:46pm UTC](https://forum.universal-robots.com/t/no-limit-on-rtde-speed-slider/15753/1 "2021-08-03T19:46:23Z")

</div>

**Software version** : 5.11.1  
**Robot generation** : UR10e (10 kg, October 2020)

**Steps to reproduce** : Enable speed\_slider\_mask via RTDE, set the speed\_slider\_fraction to any value outside of 0-100% range

**Expected behavior** : Robot should limit speed slider to 0-100%, even when masked.

**Actual behavior** : When speed\_slider\_mask is enabled, robot sets its speed slider to any value you input, between -2.147 billion and 2.147 billion percent (32-bit signed integer limit).

The robot seems to attempt to run the joints at whatever speed the slider is set, even if the speed is set above 100%. End-user attempted this at 110% speed, reported that the robot ran until faulting out due to the robot violating its safe speed limit. I have not verified at anything above 110% for fear of joint failure, but I would assume the robot will attempt to run the joints at any speed it gets set to.

 ![screenshot_0007](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/7/7dfd7b46719918ff2131737727a12bc6f9e417cb.png)  
 ![screenshot_0008](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/9/9b39f9ee385a52d9e23eb1ce66b1a4df1dc6fc5e.png)  
 ![screenshot_0009](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/e/e309c1c38c041111518135344509469ad7f1b88c.png)