Hey guys.
I have a airhandling unit with temperature sensors, humidty sensor, speed control etc.
It has a display to control all the stuff, it also has a free space on the circuit board that says I/O modbus CTS/BMS.
Is there a way to implent the settings into an app and control the unit with wifi?
I am very new to this so bear with me 
Thansk in advance!
Welcome. If it has a purple wire maybe if it has a green wire maybe but again maybe not. That is more information than you gave us about your unit. Make, model, and a link to technical information it may help get you a better answer. You have to remember we cannot see what you have and your picture is useless.
Im sorry that i gave that lille information !
Here is a link for the unit: https://www.genvex.com/download/18.d6963d417e5b4700398be/1668419882586/Installationsvejledning-ECO-300.pdf its in Danish but the circuit board is on page 18. Let me know if you need anything else!
Here is a description of the unit: ECO 300 ventilationsanlæg - Genvex
Best regards
Martin
Sorry the electronic drawings are not is a format I am use to dealing with and the text will not translate. The ECO 300 Vent... translated but does not have the needed information. It looks like something to spend some time with and you should get a pay back. I have not seen anything like that in the US, but they may very well exist. Can you get some help from the manufacturer or dealer?
It looks like you are going in the right direction. It is great that you have the excel sheet, that will save you tons of time. You might ask them there prefered method for terminating the MOD bus where you connect.
Hi mate.
Thanks for a quick reply.
What information do you need?
Then I will contact the manufacturer, I got a excel sheet with all modbus parameters, addresses and so on😊
Just purchased:
Arduino Uno REV2 WiFi
MKR 485 shield
Best regards
Martin
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