ELV MAX! protocol description

[mega]

S-command, setting weekly programm:

s:AAQQAAAAAJPRBQJYTl5eSNJQ8Fj8XxRZIA==\r\n
s:AAQQAAAAAJPRBQNYTl5eSNJQ8Fj8XxRZIA==\r\n
s:AAQQAAAAAJPRBQRYTl5eSNJQ8Fj8XxRZIA==\r\n
s:AAQQAAAAAJPRBQVYTl5eSNJQ8Fj8XxRZIA==\r\n
s:AAQQAAAAAJPRBQZYTl5eSNJQ8Fj8XxRZIA==\r\n
s:AAQQAAAAAJPRBQBYTl5eSNJQ8Fj8XxRZIA==\r\n
s:AAQQAAAAAJPRBQFYTl5eSNJQ8Fj8XxRZIA==\r\n

s:AAQQAAAAAJPRBQJYTlxeSNJQ8Fj8XxRZIA==\r\n
s:AAQQAAAAAJPRBQNYTlxeSNJQ8Fj8XxRZIA==\r\n
s:AAQQAAAAAJPRBQRYTlxeSNJQ8Fj8XxRZIA==\r\n
s:AAQQAAAAAJPRBQVYTlxeSNJQ8Fj8XxRZIA==\r\n
s:AAQQAAAAAJPRBQZYTlxeSNJQ8Fj8XxRZIA==\r\n
s:AAQQAAAAAJPRBQBYTlxeSNJQ8Fj8XxRZIA==\r\n
s:AAQQAAAAAJPRBQFYTlxeSNJQ8Fj8XxRZIA==\r\n

this are 2 times setting the weekly-programm (same thermostat, all day same programm, changed from first to second one temperature). decoding follows...

[Digit]

Could this be the weekly program you used? (based on first set of 7 s-commands)

22 till 06:30
23.5 till 07:50
18 till 17:30
20 till 20:00
22 till 21:00
23.5 till 23:00
22 till 24:00

[mega]

Yes

[Digit]

OK
This means the switchpoints look similar as how they are received, which is already documented.
Encoding a switchpoint to a word (2 bytes) is the reverse function...
Also see http://blog.hekkers.net/2011/09/11/elv- ... y-program/
Add a few bytes (RF addres, DOW indicator etcetera) and you're done

[mega]

s-command:
- setting to 'auto' accepts (needs?) temperature (used then until next step in auto-programm).
- the above samples have an error: until date+time are 3 bytes, but the samples with and without date+time are different length with 2 bytes.
- setting a boost is possible (mode 11)

[blb]

about the L: response: It looks like some yet unknown data is provided in auto mode. In auto mode there should be no relevant date & Time information in the response, but the last 'date byte' is giving some info (C9, BE, ED etc. in responses below). I don't know what it is, but maybe it is an indication of the current temperature, maybe an offset between temperature setting and the current temperature...
I have now 8 Thermostats active, see recent debug output of my HS script below:

Code: Select all

L: address: 39685 tvalid: 1 Terror: 0 Tanswer: 0 mode: Auto Valve: 0% Temp: 17 date: --
L: Device 8: 0B009B05091218002200C900
L: address: 70849 tvalid: 1 Terror: 0 Tanswer: 0 mode: Auto Valve: 0% Temp: 17 date: --
L: Device 7: 0B0114C1091218002200BE00
L: address: 13815 tvalid: 1 Terror: 0 Tanswer: 0 mode: Auto Valve: 0% Temp: 17 date: --
L: Device 6: 0B0035F7091218002200ED00
L: address: 14871 tvalid: 1 Terror: 0 Tanswer: 0 mode: Auto Valve: 0% Temp: 17 date: --
L: Device 5: 0B003A17091218002200E200
L: address: 14259 tvalid: 1 Terror: 0 Tanswer: 0 mode: Auto Valve: 56% Temp: 17 date: --
L: Device 4: 0B0037B3091218382200B800
L: address: 13838 tvalid: 1 Terror: 0 Tanswer: 0 mode: Auto Valve: 40% Temp: 15 date: --
L: Device 3: 0B00360E091218281E009800
L: address: 13789 tvalid: 1 Terror: 0 Tanswer: 0 mode: Auto Valve: 16% Temp: 17 date: --
L: Device 2: 0B0035DD091218102200CD00
L: address: 13937 tvalid: 1 Terror: 0 Tanswer: 0 mode: Auto Valve: 0% Temp: 17 date: --
L: Device 1: 0B003671091218002200DB00

[mega]

My wall-thermostat has arrived.
- L-response is 1 byte longer
- Devicetype is 3
- LiveReadLength is the correct 1 byte more value.
- the other data from L-response is the same as in the thermostate.

[sfischer]

C-Command:
Response: C
RFAddress: 0x009E7C
DeviceType: 0x01,Thermostat
RoomID: 0x04 <----- Byte on Postion 5 is RoomID 4
?: 0x14FF
SNR: IEQ0181616
ComfortTemp: 0x2A,21.0
EcoTemp: 0x22,17.0

[sfischer]

Can anyone post a detailed description and correct examples about the S Command pls.

[blb]

most info about the s: command is in the opening topic. Some examples are:

Code: Select all

s:AARAAAAAADXdAoqBiwA=\r\n  decoded: 0004400000000035DD028A818B00    command: M05gr01-9u00:00
s:AARAAAAAADoXAQA=\r\n      decoded: 000440000000003A170100          command: auto week       
s:AARAAAAAADoXAVc=\r\n      decoded: 000440000000003A170157          command: M11,5gr


see also the Homeseer vb script I use to send (s:)commands to the Thermostats.
domoticaforum.eu/viewtopic.php?f=47& ... 850#p51917

[pfwolbers]

Hello,

I also bought the MAX system (3 thermostats and an Cube).
I want to write my own program, but when I connect to the cube I get an H,M,C(couple) and een L response.
But then it stops sending data, even when I change the setpoint manually.
Do I need to send someting to get the new data?

thanks,

Peter

[Digit]

Sending l:+CR+LF to the Cube will give you the data you want.

[pfwolbers]

ok, thanks.

[pfwolbers]

Does anyone know how to set the next parameters:
- ECO and COMFORT temperature
- Temperature offset
- Valve offset
- Boost valve value
- Boost duration
- Window open temp

Most of them can be set by the MAX program, so it must be posible to change them.

Thanks ,

Peter Wolbers

[blb]

Hi Peter,

You can set the temperature with the s: command, see the opening post. You can have a look at my Homeseer script for more info: domoticaforum.eu/viewtopic.php?f=47& ... mp;start=0

Because it should not be necessary to change the other settings very often, I have not spend time in setting these values. If I need to changes these settings or the week schedule, I do so via the MAX! application.