Sensor for Vallox DigitSE RS485 ventilation system with integration into FHEM.

[Heinz]

After some months of testing a little update:
I received some e-mails questioning the so called "heat recovery cell bypass" mode. There is a damper inside the device that can
is switched automatically by the vallox-controller to bypass the heat recovery cell (HRC) to avoid heating up the house during the
summer months. Well, when you open the device on a hot summer day you will probably see the damper in an obvious wrong position:
the air does not bypass the HRC! Huh! whats wrong here?

Explanation:
The device tries to cool down the incoming air by leading it through the HRC which is still colder than the temperature outside. If the temperature outside is colder than the air inside the house the damper is switched to the expected position. There are two things to you have to do to make all that work correctly:

• turn off heating mode (the LED of the left most button on your control device must be off)
• the HRC bypass temperature must be set to a value below the outside temperature (e.g. 14 degrees)

To illustrate that effect I logged the temperatures in FHEM:

Sorry for the german labels.
The first plot shows the damper position: blue background: HRC bypass is active.
The second plot shows the temperature outside the house (blue) and the temperature inside the house (red)

As soon as the temperature outside is greater than the temperature inside the HRC bypass is deactivated to cool the incoming air by leading the air through the "colder" HRC.

The fourth diagram shows the temperature of the air that is entering the rooms (purple) and the temperature outside the house (blue).
You can see that the fresh air entering the rooms is lower than the temperature outside: the cooling effect works (even if it is only few degrees)

To all guys thinking about how to control the damper on their own logic from a raspi or arduino. This is not neccessary as the vallox logic works very well.

[Heinz]

Some people asked if the library is able to control other parameters than the fan speed. The answer is yes. The following screenshot shows my sliders and buttons in FHEM:

Sorry for the german labels again:
The first group shows the power state (ON/OFF), the heating-state (winter season=ON, summer season=OFF) and the HRC damper position (inactive=OFF). See last post.

The second group shows some alerts (none at the moment)
the third group shows a button to switch between summer and winter season. The sliders control some temperature thresholds and other parameters.

If you want to have a look at the bus data yourself you can download my sniffer tool which is a .Net port of the serial library described above under valloxserial.net

[m26872]

@Heinz What Fhem plot style and font are you using?

[Heinz]

@m26872
I modified the dark style. If you need the files I will upload em with a description how to integrate those.

[m26872]

@Heinz Yes please! I really liked those plots.

I wouldn't mind it in german (as usual with Fhem stuff), but it's a lot easier for me with english.

[Heinz]

@m26872
I simply copied the dark style of FHEM and named it dark2:

copy the following files to your FHEM subfolder www/pgm2
dark2style.css
dark2svg_defs.svg
dark2svg_style.css

In your FHEM.cfg select this style for your WEB Frontend e.g.:
define WEB FHEMWEB 8083 global
attr WEB stylesheetPrefix dark2

That's it.

If you want to have other plot colours edit the files starting with dark2svg... I think it is self explaining.

[Heinz]

For those who want to have the FHEM files here they are:
_MYSENSOR_Vallox.cfg
simply place the file in FHEM's subfolder FHEM and include it your fhem.cfg:

include ./FHEM/_MYSENSOR_Vallox.cfg

And here are the plot files which have to be placed in the subfolder www\gplot
SVG_FileLog_Vallox_6.gplot
SVG_FileLog_Vallox_5.gplot
SVG_FileLog_Vallox_4.gplot
SVG_FileLog_Vallox_3.gplot
SVG_FileLog_Vallox_2.gplot
SVG_FileLog_Vallox_1.gplot

You will likely have to adapt the room and group names, and of course the german names, sorry for that.

[m26872]

@Heinz
Nice! Now I really want to buy a Vallox ... (and a house...)

[Skjall]

Moin @Heinz,
is it possible to use a RS485 USB-Stick (http://shop.in-circuit.de/product_info.php?cPath=38&products_id=81) instead of this construction? I've tried it with your .net Sniffer on my Windows PC and it worked well.

Thanks
Skjall

[Heinz]

You can use this rs485 to usb adapter to control the vallox device, no problem there. But do you intend to use your windows pc as controller then? Or do you want to use the stick directly with fhem? this would require some software which takes the serial telegrams and imports the values into fhem... or any other homeautomation controller.

[Skjall]

No, the Windows PC was only for testing and verifying that the RS485 Connection workes well.

My preferred solution would be this stick at the Raspberry Pi which is running the FHEM. Therefor I'd need a module to read the stream and interpret it in the FHEM format. Problem: I've never written a module. It would be possible somehow.. in some month. ;)

The alternate solution would be your mysensor system. Especially because its running and tested. Problem: The Hardware. I have no experience in arduino and absolutly no idea how to build such a board. Thats why I thought I could plug the stick to an arduino and make it magicly work. ;)

EDIT: Ok. It is easier than I thought to write this module. I'm working on it and the main functions should be finished this week. I'll publish it, if it is ready for testing.

[Heinz]

Ah ok I see. Probably you can get some help in the fhem forum. I also thought about doing this using a raspi... you could use the library to write a standalone exe which reads the serial stuff from usb and sets the values in fhem using the webinterface.

[boehrian]

Hello, Thank you for this Tool. I have rebuild it but I get no Data in Fhem and the serial Monitor from Arduino. Can every one help me?

This is the output from serial Monitor.

[Heinz]

Hi,
here is my output:

Opening port
Port open
Starting repeater (RNNRA-, 2.0.0)
TSM:INIT
TSM:RADIO:OK
TSP:ASSIGNID:OK (ID=100)
TSM:FPAR
TSP:MSG:SEND 100-100-255-255 s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=bc:
TSP:MSG:READ 1-1-100 s=255,c=3,t=8,pt=1,l=1,sg=0:1
TSP:MSG:FPAR RES (ID=1, dist=1)
TSP:MSG:PAR OK (ID=1, dist=2)
TSP:MSG:READ 0-0-100 s=255,c=3,t=8,pt=1,l=1,sg=0:0
TSP:MSG:FPAR RES (ID=0, dist=0)
TSP:MSG:PAR OK (ID=0, dist=1)
TSP:MSG:READ 104-104-100 s=255,c=3,t=8,pt=1,l=1,sg=0:1
TSP:MSG:FPAR RES (ID=104, dist=1)
TSP:MSG:READ 1-1-100 s=255,c=3,t=8,pt=1,l=1,sg=0:1
TSP:MSG:FPAR RES (ID=1, dist=1)
TSM:FPAR:OK
TSM:ID
TSM:CHKID:OK (ID=100)
TSM:UPL
TSP:PING:SEND (dest=0)
TSP:MSG:SEND 100-100-0-0 s=255,c=3,t=24,pt=1,l=1,sg=0,ft=0,st=ok:1
TSP:MSG:READ 0-0-100 s=255,c=3,t=25,pt=1,l=1,sg=0:1
TSP:MSG:PONG RECV (hops=1)
TSP:CHKUPL:OK
TSM:UPL:OK
TSM:READY
TSP:MSG:SEND 100-100-0-0 s=255,c=3,t=15,pt=6,l=2,sg=0,ft=0,st=ok:0100
!TSP:MSG:SEND 100-100-0-0 s=255,c=0,t=18,pt=0,l=5,sg=0,ft=0,st=fail:2.0.0
TSP:MSG:SEND 100-100-0-0 s=255,c=3,t=6,pt=1,l=1,sg=0,ft=1,st=ok:0
TSP:MSG:READ 0-0-100 s=255,c=3,t=6,pt=0,l=1,sg=0:M
TSP:MSG:SEND 100-100-0-0 s=255,c=3,t=11,pt=0,l=15,sg=0,ft=0,st=ok:Vallox Digit SE
TSP:MSG:SEND 100-100-0-0 s=255,c=3,t=12,pt=0,l=3,sg=0,ft=0,st=ok:2.5
TSP:MSG:SEND 100-100-0-0 s=0,c=0,t=4,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=1,c=0,t=6,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=2,c=0,t=6,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=3,c=0,t=6,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=4,c=0,t=6,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=5,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=6,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=7,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=8,c=0,t=3,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=9,c=0,t=3,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=10,c=0,t=3,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=11,c=0,t=3,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=12,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=13,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=14,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=15,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=24,c=0,t=4,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=25,c=0,t=4,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=26,c=0,t=4,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=27,c=0,t=4,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=28,c=0,t=4,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=29,c=0,t=4,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=30,c=0,t=4,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=31,c=0,t=4,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=32,c=0,t=4,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=33,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=34,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=35,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=36,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=37,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=38,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=39,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=40,c=0,t=4,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=41,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=42,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=43,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=44,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=45,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=46,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=47,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=48,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 100-100-0-0 s=49,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
Started cyclic update timer.
Request registration...
TSP:MSG:SEND 100-100-0-0 s=255,c=3,t=26,pt=1,l=1,sg=0,ft=0,st=ok:2
TSP:MSG:READ 0-0-100 s=255,c=3,t=27,pt=1,l=1,sg=0:1
Node registration=1
Init complete, id=100, parent=0, distance=1, registration=1
Dropped 0
Received telegram from 21->11 command=0 arg=A3
Received telegram from 11->21 command=A3 arg=29
Property 200 changed 41
Power state 1
TSP:MSG:SEND 100-100-0-0 s=8,c=1,t=2,pt=2,l=2,sg=0,ft=0,st=ok:1
CO2 adjust state 0
TSP:MSG:SEND 100-100-0-0 s=9,c=1,t=2,pt=2,l=2,sg=0,ft=0,st=ok:0
Humidity adjust state 0
TSP:MSG:SEND 100-100-0-0 s=10,c=1,t=2,pt=2,l=2,sg=0,ft=0,st=ok:0
Heating state 1
TSP:MSG:SEND 100-100-0-0 s=11,c=1,t=2,pt=2,l=2,sg=0,ft=0,st=ok:1
Filter guard indicator 0
TSP:MSG:SEND 100-100-0-0 s=12,c=1,t=24,pt=2,l=2,sg=0,ft=0,st=ok:0
Heating indicator 1
TSP:MSG:SEND 100-100-0-0 s=13,c=1,t=24,pt=2,l=2,sg=0,ft=0,st=ok:1
Fault indicator 0
TSP:MSG:SEND 100-100-0-0 s=14,c=1,t=24,pt=2,l=2,sg=0,ft=0,st=ok:0
Serivce reminder indicator 0
TSP:MSG:SEND 100-100-0-0 s=15,c=1,t=24,pt=2,l=2,sg=0,ft=0,st=ok:0
Received telegram from 21->11 command=0 arg=29
Received telegram from 11->21 command=29 arg=1
Received telegram from 21->11 command=0 arg=35
Received telegram from 11->21 command=35 arg=9D
Temp incomming 19
TSP:MSG:SEND 100-100-0-0 s=4,c=1,t=0,pt=2,l=2,sg=0,ft=0,st=ok:19
Received telegram from 21->11 command=0 arg=71
Received telegram from 11->21 command=71 arg=0
Received telegram from 21->11 command=0 arg=A3
Received telegram from 11->21 command=A3 arg=29

This is the output of the mysensors 2.0 version which can be downloaded from
https://github.com/windkh/mysensors/tree/master/ValloxSensor

I wonder why your node has id=0.

[boehrian]

Hi, my output ist now:

0 MCO:BGN:INIT REPEATER,CP=RNNRA--,VER=2.1.1
3 TSM:INIT
4 TSF:WUR:MS=0
12 TSM:INIT:TSP OK
13 TSF:SID:OK,ID=42
15 TSM:FPAR
52 TSF:MSG:SEND,42-42-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
2059 !TSM:FPAR:NO REPLY
2061 TSM:FPAR
2098 TSF:MSG:SEND,42-42-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
4105 !TSM:FPAR:NO REPLY
4107 TSM:FPAR
4143 TSF:MSG:SEND,42-42-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
6151 !TSM:FPAR:NO REPLY
6153 TSM:FPAR
6189 TSF:MSG:SEND,42-42-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
8197 !TSM:FPAR:FAIL
8198 TSM:FAIL:CNT=1
8200 TSM:FAIL:PDT
18203 TSM:FAIL:RE-INIT
18205 TSM:INIT
18212 TSM:INIT:TSP OK
18214 TSF:SID:OK,ID=42
18216 TSM:FPAR
18253 TSF:MSG:SEND,42-42-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
20261 !TSM:FPAR:NO REPLY
20263 TSM:FPAR
20300 TSF:MSG:SEND,42-42-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
22307 !TSM:FPAR:NO REPLY
22309 TSM:FPAR
22346 TSF:MSG:SEND,42-42-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
24353 !TSM:FPAR:NO REPLY
24355 TSM:FPAR
24392 TSF:MSG:SEND,42-42-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:

I get no reply from the Vallox.
Is your original Vallox controller online

[Heinz]

The "no reply" message is from the mysensors library, but I don't know what it means.
The line "started cyclic update timer" indicates that the sensor initialized successfully, but it is missing in your output.

My latest code is online at
https://github.com/windkh/valloxserial/blob/master/examples/mysensors/ValloxSensor.ino

[hek]

Use the log parser to help you interpret the log.

[ausbremen]

@heinz
Hi Heinz, the SVG_FileLog_Vallox_#.gplot files are empty ...probably the link is dead...could you reup them? Or could you send them tio me?

Thanks, Holger

[ausbremen]

@heinz
Sorry...everything is fine with the gplot files...it was my fault trying to look at them with the crimpson editor...instead of FHEM gplot

[captaindork]

Hello Heinz, all,
first of all thank you for sharing your work in this thread!
I have not to much skills around programming and arduino, but was however able to build this and integrate my Vallox 90 SE into ioBroker. Absolutely Great!
You mentioned the bypass damper above and I see you have visualized it in fhem. I found the Value to set the Threshold temp for this (31), however I wonder where you got the actual bypass position from. Which Value shows if its open or closed?
I do not want to control it, i just would like to log the Position Status to see when it happens.

Thanks a lot i feel blind :)