RS422 control of Smart Videohub

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Lee Cobb

  • Posts: 4
  • Joined: Sat Feb 28, 2015 2:56 pm

RS422 control of Smart Videohub

PostTue Mar 03, 2015 1:58 am

Hi Class,
So I've been pulling my hair out over controlling a 40x40 Smart Videohub via rs422. It is setup in Server mode, 9600 N81, and after connecting, I receive ">". Every minute or so another will appear, So according to the manual "On connecting to the serial port, the client should send a carriage-return. The Videohub Server will respond with a > character prompt, which is not followed by a carriage-return or line-feed. Receiving the prompt indicates that a connection has been established. The same prompt will be issued after each command received by the Videohub Server." With echo on, I type my command. I have tried every permutation that I can think of to get it to accept the command, but guess i am missing something... Ill be the first to admit I have limited experience with RS422, but I can't seem to get it to respond to any commands. Im sure it's some tiny detail I'm missing.... Thoughts?


  • Posts: 1
  • Joined: Thu Feb 01, 2018 12:58 pm
  • Real Name: Ken Danner

Re: RS422 control of Smart Videohub

PostThu Feb 01, 2018 1:04 pm

Anyone ever figure this out? Experiencing the exact same behavior. Is this just an RS422 port setting in the software?

Asgeir Hustad

  • Posts: 113
  • Joined: Tue Sep 26, 2017 10:13 am

Re: RS422 control of Smart Videohub

PostFri Feb 02, 2018 9:15 am

How are you connecting RS422 into your computer? I've had issues with several serial to USB-devices where they could read the incoming data just fine, but the voltage levels they were outputting simply weren't large enough for the device on the other end to read.

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