# Activate/desactivate I/o tool 24VDC **URL:** \ **Category:** Technical Questions\ **Created:** [September 30, 2025, 9:05am UTC](https://forum.universal-robots.com/t/activate-desactivate-i-o-tool-24vdc/41322 "2025-09-30T09:05:50Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![cjeannin](https://avatars.discourse-cdn.com/v4/letter/c/35a633/32.png) [@cjeannin](https://forum.universal-robots.com/u/cjeannin)\ **Post date:** [September 30, 2025, 9:05am UTC](https://forum.universal-robots.com/t/activate-desactivate-i-o-tool-24vdc/41322/1 "2025-09-30T09:05:50Z")
Hello, I would to setup an automatic tool changer on UR5. Before or after changing tool, I would to cut 24VDC on I/O tool to prevent electrics arcs. Is it possible to do that? Thanks in advance for your help. Regards. Christophe SMC FRANCE ---
**Author:** ![forbech](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.universal-robots.com/forbech/32/902_2.png) [@forbech](https://forum.universal-robots.com/u/forbech)\ **Post date:** [September 30, 2025, 9:57am UTC](https://forum.universal-robots.com/t/activate-desactivate-i-o-tool-24vdc/41322/2 "2025-09-30T09:57:50Z")
Use a tool changer with this “power off” function as a built-in feature > **[Kelvin Tool Changer product overview](https://www.toolchanger.eu/kelvin.htm)** > > Automatic tool changer for small collaborative robots ---
**Author:** ![cjeannin](https://avatars.discourse-cdn.com/v4/letter/c/35a633/32.png) [@cjeannin](https://forum.universal-robots.com/u/cjeannin)\ **Post date:** [September 30, 2025, 11:03am UTC](https://forum.universal-robots.com/t/activate-desactivate-i-o-tool-24vdc/41322/3 "2025-09-30T11:03:39Z")
Thank you very much for your feedback, but i had allready the tool changer and I would like to set up. Is it possible to active and deactive I/O tool 24 VDC? ---
**Author:** ![efn](https://avatars.discourse-cdn.com/v4/letter/e/35a633/32.png) [@efn](https://forum.universal-robots.com/u/efn)\ **Post date:** [September 30, 2025, 12:01pm UTC](https://forum.universal-robots.com/t/activate-desactivate-i-o-tool-24vdc/41322/4 "2025-09-30T12:01:19Z")
Yes, you can set the tool voltage to 0V with this script command: ![image](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/7/707f2e9222646d178a45b6af2859016a50c0b8eb.png) ---
**Author:** ![cjeannin](https://avatars.discourse-cdn.com/v4/letter/c/35a633/32.png) [@cjeannin](https://forum.universal-robots.com/u/cjeannin)\ **Post date:** [September 30, 2025, 12:20pm UTC](https://forum.universal-robots.com/t/activate-desactivate-i-o-tool-24vdc/41322/5 "2025-09-30T12:20:47Z")
Thank you very much. How can you pass from polyscope to sript command? ---
**Author:** ![efn](https://avatars.discourse-cdn.com/v4/letter/e/35a633/32.png) [@efn](https://forum.universal-robots.com/u/efn)\ **Post date:** [September 30, 2025, 12:23pm UTC](https://forum.universal-robots.com/t/activate-desactivate-i-o-tool-24vdc/41322/6 "2025-09-30T12:23:19Z")
There’s a node/action you can insert from the node section. It basically allows you to write a script command. 🙂 ---
**Author:** ![cjeannin](https://avatars.discourse-cdn.com/v4/letter/c/35a633/32.png) [@cjeannin](https://forum.universal-robots.com/u/cjeannin)\ **Post date:** [September 30, 2025, 12:28pm UTC](https://forum.universal-robots.com/t/activate-desactivate-i-o-tool-24vdc/41322/7 "2025-09-30T12:28:58Z")
Thank very much. Last question, I never change security password, could you please give the initial PSW please? ---
**Author:** ![efn](https://avatars.discourse-cdn.com/v4/letter/e/35a633/32.png) [@efn](https://forum.universal-robots.com/u/efn)\ **Post date:** [September 30, 2025, 3:13pm UTC](https://forum.universal-robots.com/t/activate-desactivate-i-o-tool-24vdc/41322/8 "2025-09-30T15:13:07Z")
There’s no initial safety password. So either someone else changed it, or it hasn’t been set yet. In case of the latter, you can go to Setup → Passwords and set up the safety password without an “Old password”.