|
Is there anyone who has experience in RS232 communication from KNX who they want to share? I am a total beginner on serial communication, but I understand that it is the only way to communicate with many audio/video systems. What hardware do I need? and what should I learn about the RS232 standard (if there even is a standard) |
|
As a KNX integrator I put the focus on audio/video and heating application. My background is the PLC-world and there are a lot of serial port communication options. So I was looking for something simular for KNX. In the beginning I wrote some code in visualisation application but I was not happy with it. To manie codes to write and if the PC isn’t running nothing is working. So i went looking on the marked and find something else. This KNX integrator brings some modules on the marked already prepared with what you ask. They wrote; NAD, Harmon-kardon, Rotel, marantz,… which I already used. I received the module and a list with KNX group’s addresses to import in ETS and up and running, no probs. It was very easy to implement, I lost no time and customers are happy. I can recommended it but it’s up to you. info= http://www.domotechnology.be/gateways.html |
|
You use: Zennio Skx-linker open Cytech They use standard ascii codes |
|
RS232 (EIA232) is a standard but the standard only covers the electrical and physycal parts, not the protocols used on it. I.e. EIA232 defines cabel, connection plug and bitrate etc. - nothing more. You need to find out what protocol the AV-device use, most likely it's simple text comands like "PLAY PLAYLIST_1" and then you need a device that sends standard text strings (ascii codes). For example Zennio's SKX open maps one 1-bit KNX message to a text string like "PLAY". |
