KNX and the 800M series
I am a last year engineering student and currently working on a bachelor thesis regarding automation of office buildings, more precisely ventilation, temperature, light and blinds control. From your school we have the opportunity to borrow and use the 800M series PLC, PM856A with 810 series I/O.
The idea was to use the KNX protocoll for communication, but with the research we have done uptil now it seems that we have to use to ETS software tool to program the units.
My question is if there is any way to use the PLC as a central control unit for all KNX units, or do we have to use the ETS software for programing? It seems that the Modebus is better for this purpose but KNX seem to have a much wider product portfolio. Sorry is the question seems strange but this a hole new field for me within automation.
Any reply or clarification would be great.
With kind regards
Voted best answer
Unfortunatelly the 800M series do not support the KNX protocol. the system 800xA v6.0 (to be released) which works with these controllers will support it, but as for today the v6.0 is still not available.
Hence, your idea to have a plc as a central commuication unit makes sense, but the AC800M controller is the wrong choice here as it doesnt support this protocol (there are many other PLCs which do).
Of course if you use a modbus to KNX gateway this would be possible but it is definetly not the best solution in place.
Probably if you use the AC800M then yur best solution would be to use the ETS software for programming the whole KNX interface.
Hope this helps,
Best Regards and Happy Holidays.