Interfacing with a system through Python

[darrepac]

Hi,

I have a ventilation and heating solution that I succeeded to connect to the Pi (modbus protocol over RS485 converter). I am not asking to interface directly the system with Domoticz but I am able to write a python script to read information (temperature and so on) and write information (change some parameters).
How to update Domoticz?
On the read side, it is pretty easy as I can use JSON to update some dummy temperature monitor.
But on the write side? how can I make call to my python script from domoticz?

[gizmocuz]

you mean, with your python script you are able to read the ventilation/heating system,
and you want to get these values into domoticz?

If yes, search the forum!

If not, you want to get values from domoticz and use this to control your ventilation and heating system?
If yes, you can use lua for this, also search the forum

[darrepac]

values from domoticz and use this to control your ventilation and heating system?

Yes, it was that part that was not known to me

If yes, you can use lua for this, also search the forum

Now, I know how to dot it: Lua... thanks

[Dlanor]

Hi,

I have a ventilation and heating solution that I succeeded to connect to the Pi (modbus protocol over RS485 converter.

How did you succeed? I am very interested.

[darrepac]

It heavily depends on your heating/ ventilation system. I have a Nilan system which has a RS485/Modbus interface...

[alveman]

It heavily depends on your heating/ ventilation system. I have a Nilan system which has a RS485/Modbus interface...

Hello,

Did you manage to read the values ​​through Modbus (Lua?) and update Domoticz? Can you please share your code. I'm trying to read my heatpump and think you code kan be useful.

Regards

[darrepac]

I am not reading the value with Lua but with python (with minimal modbus library). The script in python is also taking care of updating Domoticz

[alveman]

Ok, can you please share your python code.

[darrepac]

http://codepad.org/T3cs1QHH