# Telnet Comm Troubleshooting Camera Trigger **URL:** \ **Category:** Robot Communication\ **Created:** [June 28, 2023, 11:56am UTC](https://forum.universal-robots.com/t/telnet-comm-troubleshooting-camera-trigger/29266 "2023-06-28T11:56:50Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![ezebot\_1](https://avatars.discourse-cdn.com/v4/letter/e/aeb1de/32.png) [@ezebot\_1](https://forum.universal-robots.com/u/ezebot_1)\ **Post date:** [June 28, 2023, 11:56am UTC](https://forum.universal-robots.com/t/telnet-comm-troubleshooting-camera-trigger/29266/1 "2023-06-28T11:56:50Z")
I am having trouble triggering a Cognex camera via Telnet from a UR script. I can send the command through a telnet connection to the camera from my laptop to trigger the camera. However I don’t get a response when doing this through the UR Script. I referenced this thread along with others that gave me a hint that this can be done and I shouldn’t give it yet. > [@\[SOLVED\] Telnet Comm through socket connection](https://forum.universal-robots.com/t/solved-telnet-comm-through-socket-connection/1372): > > Hi all, I am trying to login to an external device via Telnet socket communication that has a user/pass field, but without success. Currently, I can login onto the device (on a Unix machine) with the telnet command. Upon successful connection, I get this response, where \ is my input for each field: telnet xxx.xxx.xxx.xxx 23 User:\ Pass:\ And I am successfully logged on. I am trying to mimic this with URScript (abridged version): 1 socket\_open(“xxx.xxx.xxx.xxx”,23) … I have a script file in the before start as shown below. **Before Start** global Conn= False def ConnCameraTelnet(): while (Conn == False ): global Conn=socket\_open(“x.x.x.xxx”,23) popup(“socket open”, “Message”, False, False, blocking=True) end end def telnet\_send(str): socket\_send\_string(str) socket\_send\_byte(13) #send carriage return (CR) socket\_send\_byte(10) #send line feed (LF) end The main robot program looks like this and I have turned off loop forever. **Robot Program** 4 ConnCameraTelnet() 5 telnet\_send(“sw8”) 6 Wait: 5.0 Please let me know if you see anything that I need to change. Note: I have the camera set to Industrial Ethernet.