Error on reading Relay 2 from a Deltasol CS Plus using VBus

[Didac Vives]

Dear Daniel,

I’m traying to read the Vbus values from Deltasol CS Plus, but I can’t read the Relay2 value and I always get -1.

--------Decoded VBus data-------------

Destination: 10

Source: 2211

Protocol Version: 1

Comand: 10

Checksum:33

---------Values-------

Sensor 1: 26.8

Sensor 2: 26.6

Sensor 3: 26.8

Sensor 4: 26.3

Relay 1: 100

Relay 2: -1

----END--------

Destination: 10

Source: 2211

Protocol Version: 1

Command: 100

Framecount: 10

Checksum: 33

------Values------

Sensor 1: 26.80

Sensor 2: 26.60

Sensor 3: 26.80

Sensor 4: 26.30

Relay 1: 100

Relay 2: -1

Destination: 10

Source: 2211

Protocol Version: 1

Command: 100

Framecount: 10

Checksum: 33

------Values------

Sensor 1: 26.80

Sensor 2: 26.60

Sensor 3: 26.80

Sensor 4: 26.30

Relay 1: 100

Relay 2: -1

I can read Sensor1_temp, Sensor2_temp, Sensor3_temp, Sensor4_temp and Relay1.

As I could no find the VBus protocol for the CS Plus in the file:

VBus-Protokollspezification_en_270111.pdf

I’m using this code from:

https://github.com/FatBeard/vbus-arduino-domoticz

ArduinoVBusDecoder.ino

But I have modified it to read this part of the code as it do no have the option for the Deltasol CS Plus:

 

F = FOffset;

     

              Septet = Buffer[F + FSeptet];

              InjectSeptet(Buffer, F, 4);

     

              // 'collector1' Temperatur Sensor 1, 15 bits, factor 0.1 in C

              Sensor1_temp = CalcTemp(Buffer[F + 1], Buffer[F]);

              // 'store1' Temperature sensor 2, 15 bits, factor 0.1 in C

              Sensor2_temp = CalcTemp(Buffer[F + 3], Buffer[F + 2]);

     

              //*******************  Frame 2  *******************

              F = FOffset + FLength;

     

              Septet = Buffer[F + FSeptet];

              InjectSeptet(Buffer, F, 4);

     

              Sensor3_temp = CalcTemp(Buffer[F + 1], Buffer[F]);

              Sensor4_temp = CalcTemp(Buffer[F + 3], Buffer[F + 2]);

     

              //*******************  Frame 3  *******************

              F = FOffset + FLength * 2;

     

              Septet = Buffer[F + FSeptet];

              InjectSeptet(Buffer, F, 4);

     

              Relay1 = (Buffer[F] );

              Relay2 = (Buffer[F + 1]);

             

              ErrorMask  = Buffer[F + 2]; //This is the notification

              Scheme    =  Buffer[F + 3];

       

              //*******************  Frame 4  *******************

              F = FOffset + FLength * 3;

     

              Septet = Buffer[F + FSeptet];

              InjectSeptet(Buffer, F, 4);

     

              OperatingHoursRelais1 = Buffer[F + 1] << 8 | Buffer[F];

              OperatingHoursRelais2    =  Buffer[F + 3] << 8 | Buffer[F + 2];;

     

              //*******************  Frame 5  *******************

              F = FOffset + FLength * 4;

     

              Septet = Buffer[F + FSeptet];

              InjectSeptet(Buffer, F, 4);

     

              HeatQuantity = (Buffer[F + 1] << 8 | Buffer[F]) + (Buffer[F + 3] << 8 | Buffer[F + 2]) * 1000;

     

              //*******************  Frame 6  *******************

              F = FOffset + FLength * 5;

     

              Septet = Buffer[F + FSeptet];

              InjectSeptet(Buffer, F, 4);

     

              HeatQuantity = HeatQuantity + (Buffer[F + 1] << 8 | Buffer[F]) * 1000000;

       

     

              SystemTime = Buffer[F + 3] << 8 | Buffer[F + 2];

 

 Thanks in advance,

Dídac

[Daniel Wippermann]

Hi Didac,

the second pump speed in not stored in the byte following the first pump speed, so you’ll need to extract that info slightly differently.

Since the CS controller you have is newer than the 2011 VBus spec PDF, you cannot find information in there. But the newer documentation can be found here:

- Structure in bytes: http://danielwippermann.github.io/resol-vbus/#/vsf/bytes/00_0010_2211_10_0100

- Structure in fields: http://danielwippermann.github.io/resol-vbus/#/vsf/fields/00_0010_2211_10_0100 

As you can see in the first link the pump speed for relay 2 is not located at byte offset 9 like you expected, but at offset 12 (which is in the next VBus frame).

I hope this answers your question. If you have any additional questions don’t hesitate to contact me again.

Best regards,

Daniel

--
Sent from Canary

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