# UR10e RTDE No Connection Connection Status = None Infinite Loop **URL:** \ **Category:** Robot Communication\ **Created:** [March 14, 2025, 11:55am UTC](https://forum.universal-robots.com/t/ur10e-rtde-no-connection-connection-status-none-infinite-loop/39036 "2025-03-14T11:55:13Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![stefan.fischer](https://avatars.discourse-cdn.com/v4/letter/s/ea666f/32.png) [@stefan.fischer](https://forum.universal-robots.com/u/stefan.fischer)\ **Post date:** [March 14, 2025, 11:55am UTC](https://forum.universal-robots.com/t/ur10e-rtde-no-connection-connection-status-none-infinite-loop/39036/1 "2025-03-14T11:55:13Z")
Hello everybody, i am new in this forum. Just searched for a few days about my problem trying to solve it. First things first: It is my first time using UR Robots. So please take nothing for granted. Don’t underestimate my potential of “not knowing”-something. I Work an a 64bit Windows 11 Dell Workstation with PyCharme. I am trying to Connect to a UR10e via Pythonscript and the following library: > **[GitHub - UniversalRobots/RTDE\_Python\_Client\_Library: RTDE client library and examples](https://github.com/UniversalRobots/RTDE_Python_Client_Library)** > > RTDE client library and examples With that i am following this absolutely great video Tutorial series: [![](https://img.youtube.com/vi/N2nh3iG7kvo/maxresdefault.jpg "Universal Robot RTDE tutorial #1 (Where to start the journey)") ](https://www.youtube.com/watch?v=N2nh3iG7kvo) I watched part 1,2 and 3 so far and felt, that i should (at least) be able to connect to my robot know. So i open and start the program file “rtde\_control\_loop.urp” on my robot via panel. Then i start the example Script “example\_control\_loop.py” in PyCharme. I end up hanging in line 59 in the while loop, trying to connect over and over again. Constantly getting the message “Connection\_State: None”. So i am guessing the connection cannot be finished succesfully. In cmd-Line i can succesfully ping my Robot via “ping \” I am Using Python 3.11. In this Guide: > **[Real-Time Data Exchange (RTDE) Guide - 22229](https://www.universal-robots.com/articles/ur/interface-communication/real-time-data-exchange-rtde-guide/)** under the headline “RTDE Client Python Module” i saw the notation, that this module has been developed for python 2.7.11, so naturally i changed my Interpreter to python 2.7.11 and tried it again. Same result: Hanging in Loop, getting “Connection\_status: None” messages. So i went back to Python 3.11, because all of my other programs work with that interpreter. I would only change interpreters if i have to. I have a static IP on my UR10e = 192.168.17.43 I made sure wie are in the same subnet Mask = 255.255.255.0 I am now starting all over again in watching the Tutorial Videos for the fifth time and reading the guidlines from front to back hoping i am finding hints what could make any problems. Simultaneously i will get my Win10 Laptop here to make sure Win11 is not playing any evil jokes here. Does anybody know this problem? Or does anybody have an idea for a solution? 😅 Thank you in advance for reading all of my text. Yours sincerely Stefan ---
**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:** [March 17, 2025, 10:47am UTC](https://forum.universal-robots.com/t/ur10e-rtde-no-connection-connection-status-none-infinite-loop/39036/2 "2025-03-17T10:47:05Z")
Take a look at this guide to set up the hardware for RTDE: > **[HowToRTDE-v1.pdf](https://www.toolchanger.eu/download/doc/HowToRTDE-v1.pdf)** > > 2028.63 KB /Henning ---
**Author:** ![stefan.fischer](https://avatars.discourse-cdn.com/v4/letter/s/ea666f/32.png) [@stefan.fischer](https://forum.universal-robots.com/u/stefan.fischer)\ **Post date:** [March 17, 2025, 12:19pm UTC](https://forum.universal-robots.com/t/ur10e-rtde-no-connection-connection-status-none-infinite-loop/39036/3 "2025-03-17T12:19:07Z")
UPDATE: I am getting a security message “C207A0: Fieldbus Input not connected”. Although i connected the PC with the Robot Controller via RJ45 Ethernet Cable. I read online, that some Fieldbus is also capable of using the RTDE Interface. But i don’t know how to check if this is the case. I will research further. Addionally i tried to check if the port 30004 was open accordingly. I was expecting a “Listening” status, but i have a “waiting” status instead. So again a hint, that something already uses the port 30004. ![image](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/e/eee113d6b348c35467ec758b12ba27858d248cfb.png) Can somebody maybe help with these additionally informations? ---
**Author:** ![stefan.fischer](https://avatars.discourse-cdn.com/v4/letter/s/ea666f/32.png) [@stefan.fischer](https://forum.universal-robots.com/u/stefan.fischer)\ **Post date:** [March 17, 2025, 12:19pm UTC](https://forum.universal-robots.com/t/ur10e-rtde-no-connection-connection-status-none-infinite-loop/39036/4 "2025-03-17T12:19:20Z")
Thanks i will do that right away. ---
**Author:** ![stefan.fischer](https://avatars.discourse-cdn.com/v4/letter/s/ea666f/32.png) [@stefan.fischer](https://forum.universal-robots.com/u/stefan.fischer)\ **Post date:** [March 18, 2025, 2:43pm UTC](https://forum.universal-robots.com/t/ur10e-rtde-no-connection-connection-status-none-infinite-loop/39036/5 "2025-03-18T14:43:17Z")
UPDATE: I worked my way through the PDF. I found two errors: 1. Host IP von Robot Panel should be the Ethernet Adapter IP from the PC 2. PROFINET, EtherNet/IP, Modbus TCP services blocks the RTDE-Interface → All deactivate I also deactivated the firewall to prevent it to block any program. Additionally the installation of “boost” gave me problems, but i think i solved it. It should work now. I am still getting the connection\_state “None” back from the RTDE Interface. When i am starting the Script “rtde\_control\_loop.urp” i am getting the security message: Security Stop C207A0: Fieldbus-Input not connected This is the protocoll i can save from this message: [recording20250318\_14\_48\_34.zip](https://forum.universal-robots.com/uploads/short-url/dLwEeV65UOCyBhs7XYfc0wIfjPo.zip) (6.4 MB) Yours sincerely Stefan Fischer ---
**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:** [March 18, 2025, 5:50pm UTC](https://forum.universal-robots.com/t/ur10e-rtde-no-connection-connection-status-none-infinite-loop/39036/6 "2025-03-18T17:50:18Z")
I have a new walk-around for the problem with Boost It is possible to copy Boost from a running computer to a new installation. Just copy the complete folder with the Boost program from a Windows computer where it has been installed and are running. Paste this folder to the new Windows where you want to use Boost. No install – No problems 😊 If you don’t have a Windows computer with a running Boost you can give it a try with this copy: [https://www.toolchanger.eu/download/doc/BoostCopy.zip](https://www.toolchanger.eu/download/doc/BoostCopy.zip) Copy the “boost-1-81-0” folder to C:” You still need to set up the path for Boost in Windows, see the instruction in the pdf. I tried this trick on the last setup I made. It works without any problems. I will update the “How To RTDE” when I get the time /Henning