Better climate support for HASS

[Julius2342]

3/4 of all feedback i got wished better climate support. Looks like we need better climate support.

I suggest the following configuration:

climate:
   - platform: xknx
     name: Kitchen.Temperature
     temperature_address: '6/2/1'
     setpoint_address: '6/2/2'

     frost_protection_address: '6/2/3'
     comfort_address: '6/2/4'
     night: '6/2/5'
     standby: '6/2/6'
     operating_mode: ''6/2/7'

Within HASS [frost,comfort,night,address] will show up as dropdown for "operation_modes".

[mag2bue]

for each mode -> comfort, frost and away, I have a seperate KNX adress

http://www.knx.org/fileadmin/template/documents/downloads_support_menu/KNX_tutor_seminar_page/Advanced_documentation/Heating_E1211a.pdf

According to this document there are following operating modes:

• Frost/heat protection
• Comfort
• Night
• Standby

To be honest I would think that relevant controls should simply appear if there is an "address" set in order to not over-complicate things. This would make a config for my place with 18 thermostats controls barely readable.

[Julius2342]

hmmm.... :) you are about to convince me....

To be honest I know very little about how thermostats work in KNX and am simply making assumptions :) Perhaps we could have a look at the implementation in OpenHAB? I'm sure they have it figured out.

[Julius2342]

is there any knx representation of "away" ?

And do these modes exclude each other? (So can it be "night" and "comfort" in parallel ?) [Just realized p. 18 explains this ... ]

[Julius2342]

The problem i have, i do not fully understand this setpoint thing within KNX.

As far as i see it:

• There is a setpoint temperature, which is the temperature under normal conditions. (Sometimes also referred as "basis-setpoint?" )
• But then there are some "modifiers" like comfort which makes it warmer without changing the setpoint?

Yes, they exclude each other, the mode can only be set to one of them. I could not find any mention of "away". Please have a look at the operating manual for a Jung room controller, maybe this would help.

en_4093KRMTSD_V02_10052016_td.pdf

Setpoint shift is basically the deviation (plus or minus) from the base temperature appropriate (set) for the particular operating mode. This is how I understand it.

[Julius2342]

what a terrible concept ...

[Julius2342]

so we should add group addresses for each state and add the exclusiveness-logic on top. Will do :)

It makes a lot of sense actually. You can set the operating mode for the whole house yet you want to keep one room always colder. I know it feels very wrong at first and it took me some time to get used to it.

Unfortunately I don't have ETS software but from I can see from the files left for me from the installer, the "operating mode" is just one address.

[Julius2342]

probably you can encode the modes also in several bits of the same byte

While reading in the KNX manual they call it "Enumerated Types":

05_Interworking_E1209.pdf

Enumerations are used for datapoints with a clearly limited number of values and no
precise hierarchical order. If a datapoint uses an enumerated data type, all possible
states shall be described. If invalid / undefined values are sent, no malfunctions may
occur.
Examples are: Toggling between “Comfort”, “Standby” and “Night” operating modes in
room thermostats.

Perhaps the attached file could help (4.20 Common HVAC Datapoint types)

05_Interworking_E1209.pdf