# Set Digital out about URCap **URL:** \ **Category:** URCap Development\ **Created:** [September 22, 2021, 7:30am UTC](https://forum.universal-robots.com/t/set-digital-out-about-urcap/16619 "2021-09-22T07:30:27Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![anon92786336](https://avatars.discourse-cdn.com/v4/letter/a/ecc23a/32.png) [@anon92786336](https://forum.universal-robots.com/u/anon92786336)\ **Post date:** [September 22, 2021, 7:30am UTC](https://forum.universal-robots.com/t/set-digital-out-about-urcap/16619/1 "2021-09-22T07:30:27Z")
Hello i need your help. I would like to write a URCap. In this URCap i have the problem i musst set a Digitalout when i click a Button. My Question is how can i set a Digital out to true? I have test it with the scriptcommunicator, but when the Robot is in Power off the Script doesn’t run. Is there a other option to do this, maybe about the RTDE to write a outputstream? For example I read about the Robot Real Time Reader the Robot mode. Is there an example? Thanks for your help ---
**Author:** ![fujikit](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.universal-robots.com/fujikit/32/6042_2.png) [@fujikit](https://forum.universal-robots.com/u/fujikit)\ **Post date:** [September 22, 2021, 9:28am UTC](https://forum.universal-robots.com/t/set-digital-out-about-urcap/16619/2 "2021-09-22T09:28:21Z")
It is possible by using realtime client. This example is for gp output. > ---
**Author:** ![anon92786336](https://avatars.discourse-cdn.com/v4/letter/a/ecc23a/32.png) [@anon92786336](https://forum.universal-robots.com/u/anon92786336)\ **Post date:** [September 22, 2021, 10:00am UTC](https://forum.universal-robots.com/t/set-digital-out-about-urcap/16619/3 "2021-09-22T10:00:10Z")
Thank you i will test it and reporting back. ---
**Author:** ![anon92786336](https://avatars.discourse-cdn.com/v4/letter/a/ecc23a/32.png) [@anon92786336](https://forum.universal-robots.com/u/anon92786336)\ **Post date:** [September 22, 2021, 1:09pm UTC](https://forum.universal-robots.com/t/set-digital-out-about-urcap/16619/4 "2021-09-22T13:09:24Z")
Hello I have test this but the same problem, i can send the command but only when the robot is power on. I musst set a digital out when the robot is in mode Power off. can you help me? Thanks in advance ---
**Author:** ![fujikit](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.universal-robots.com/fujikit/32/6042_2.png) [@fujikit](https://forum.universal-robots.com/u/fujikit)\ **Post date:** [September 22, 2021, 1:19pm UTC](https://forum.universal-robots.com/t/set-digital-out-about-urcap/16619/5 "2021-09-22T13:19:50Z")
I think that it doesn’t have to be possible to turn outputs under powering off for security. ---
**Author:** ![moliveira](https://avatars.discourse-cdn.com/v4/letter/m/ecb155/32.png) [@moliveira](https://forum.universal-robots.com/u/moliveira)\ **Post date:** [September 22, 2021, 1:48pm UTC](https://forum.universal-robots.com/t/set-digital-out-about-urcap/16619/6 "2021-09-22T13:48:32Z")
I am in the process of testing / verifying this method, and so far it seems to work as desired. ![image](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/3/33c071015c273479584d82e90cbd95e26afc2ce3.png) ![image](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/6/66ac79903cb69194063946a516b5b2df2efd3b83.png) ![image](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/3/3277698732068edb0567a4c1427c7172a0a9fb3f.png) ![image](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/8/841333777b3ab0e4c4b6185db5d3b2e57a4807c6.png) ---
**Author:** ![anon92786336](https://avatars.discourse-cdn.com/v4/letter/a/ecc23a/32.png) [@anon92786336](https://forum.universal-robots.com/u/anon92786336)\ **Post date:** [September 22, 2021, 2:49pm UTC](https://forum.universal-robots.com/t/set-digital-out-about-urcap/16619/7 "2021-09-22T14:49:07Z")
Hello thank you for your fast replay. But I have a question, where you get the IOHandler? I don’t find this class! ![Bild](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/9/95964f4558bc5d4edd9c8be9d3d6bdbe1a84acec.png) Thanks a lot. ---
**Author:** ![moliveira](https://avatars.discourse-cdn.com/v4/letter/m/ecb155/32.png) [@moliveira](https://forum.universal-robots.com/u/moliveira)\ **Post date:** [September 22, 2021, 4:11pm UTC](https://forum.universal-robots.com/t/set-digital-out-about-urcap/16619/8 "2021-09-22T16:11:06Z")
My bad I forgot to add the class. It’s under the manipulateIO example. ---
**Author:** ![anon92786336](https://avatars.discourse-cdn.com/v4/letter/a/ecc23a/32.png) [@anon92786336](https://forum.universal-robots.com/u/anon92786336)\ **Post date:** [September 23, 2021, 6:07am UTC](https://forum.universal-robots.com/t/set-digital-out-about-urcap/16619/9 "2021-09-23T06:07:35Z")
Thanks I will test it and inform you back. ---
**Author:** ![anon92786336](https://avatars.discourse-cdn.com/v4/letter/a/ecc23a/32.png) [@anon92786336](https://forum.universal-robots.com/u/anon92786336)\ **Post date:** [September 23, 2021, 6:22am UTC](https://forum.universal-robots.com/t/set-digital-out-about-urcap/16619/10 "2021-09-23T06:22:34Z")
I don’t find this in my SDK. Can you help me? ![image](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/c/c885b9697c481c9496eae6824d10f31bfaced705.png) ---
**Author:** ![anon92786336](https://avatars.discourse-cdn.com/v4/letter/a/ecc23a/32.png) [@anon92786336](https://forum.universal-robots.com/u/anon92786336)\ **Post date:** [September 23, 2021, 6:57am UTC](https://forum.universal-robots.com/t/set-digital-out-about-urcap/16619/11 "2021-09-23T06:57:23Z")
I have found it to download. 🙂 ---
**Author:** ![anon92786336](https://avatars.discourse-cdn.com/v4/letter/a/ecc23a/32.png) [@anon92786336](https://forum.universal-robots.com/u/anon92786336)\ **Post date:** [September 23, 2021, 12:21pm UTC](https://forum.universal-robots.com/t/set-digital-out-about-urcap/16619/12 "2021-09-23T12:21:47Z")
Is is running. Thank you very much. ---
**Author:** ![moliveira](https://avatars.discourse-cdn.com/v4/letter/m/ecb155/32.png) [@moliveira](https://forum.universal-robots.com/u/moliveira)\ **Post date:** [September 23, 2021, 1:45pm UTC](https://forum.universal-robots.com/t/set-digital-out-about-urcap/16619/13 "2021-09-23T13:45:33Z")
awesome, glad to help!