[REQUEST4HELP] Providing binding for central heating systems with Siemens LPB-Controllers

[hlw3...@gmail.com]

Hi all,

I'd like to ask for help for providing a way to control central heating systems powered by Siemens LPB controllers.

As my java-knowledge is fairly limited, I may provide all the details of the protocol and someone with more insight in

binding development does the hard job ;-)

So, before I write down all infos, please volunteer :)

Thanks,

Sascha

[hlw3...@gmail.com]

So, here is summarized how the Boiler System Bus (BSB) / Local Process Bus (LPB) works.

For more details on the Hardware please visit: http://www.mikrocontroller.net/topic/218643#postform and http://blog.dest-unreach.be/2012/12/14/reverse-engineering-the-elco-heating-protocol

Data is sent as telegrams, min. length is 11 Bytes.

First byte is always 0xDC.

2nd byte Sender (f.e. user control unit 0x8A)

3rd byte Receiver (f.e. "all devices" 0x7F, controller 0x80)

4rd byte length of telegram including CRC

5th byte command (query 0x76, reply 0x07 / change 0x03, confirm 0x04 / status 0x02)

6-9 "Parameter" / Adress

10-(length-2CRC) Data

Last two Bytes are 16-Bit CRC.

If there are any questions, please ask :)

Sascha

[NetAck]

Hi Sascha,

I'm very happy to find the telegram specification of the BSB protocol of Siemens!

I have only a little question for you, please could you tell me something more about the "Parameter" / Address Byte?

Do you have same Parameter Name / Bytes Value to give me as sample ?

I'm tring to simulate a Siemens Control Room QAA75.611 to get some data and send to my Home Main Display.

Thank' in advance

NetAck

[dario.g...@comodita.info]

[hlw3...@gmail.com]

Hi NetAck,

AFAIK there's no calculated relation between program number as shown by the console and the address bytes. A nearly complete list can be found as attachment in this post: http://www.mikrocontroller.net/topic/218643#2984563 (Attn: German)

If you need anything further, please let me know and I'll reply ASAP.

Thanks,

Sascha