RS232 Connection

Citabria Posted By Citabria, Nov 27, 2018 at 4:13 AM

  1. Citabria

    Citabria
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    Hi,
    I made a connection on RS232 with my pellet stove and get a constant stream of values as output. Is there somewhere information how to handle this stream?
    Thanks
     
  2. Ssyko

    Ssyko
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    What kind of stove? Ive never seen one with a DB9 serial port. Is the db9 on the control board?
     
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  3. Citabria

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    Austroflamm Clou. I have already done some research and it probably has to do with the baud rate settings. I was hoping someone could help.

    It is actually a RJ45 port.
     
  4. Ssyko

    Ssyko
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    Im guessing that you will need software from Austroflamm to interpret the data. It’s probably how they set up the initial installation settings or for troubleshooting issues.
     
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  5. Citabria

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    Possible, but I found on a website related to Austroflamm Clou, that a program as TERMITE could be used. This is a simple RS232 terminal application. This makes me think it should gives some readouts at least.
     
  6. Ssyko

    Ssyko
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    What are you looking for data wise? Just curious?
     
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  7. Citabria

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    Software version and ability to alter parameters.
     
  8. Ssyko

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    Have you tried termite? Maybe call Austroflamm support and see if they will tell you if its proprietary software needed or not.
     
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  9. Citabria

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    Austroflamm doesn't help. Of course I tried Termite... it is probably baud rate related.
     
  10. Ssyko

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    I don’t know what to tell ya then.
     
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  11. Ssyko

    Ssyko
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    The baud rate is the rate at which information is transferred in a communication channel. If you have recieved running data the baud rate is good. The problem your going to have is decrypting that data, thus you need the software or app to put that data in perspective.
     
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  12. tadmaz

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    Can you putty to it? Also the RJ45/com port cable, was it a cable you had laying around or did it come with the stove? The pinout could be wrong, maybe needs to be null versus straight through, and assuming the pinout is correct you still have to determine all of those settings, such as baud rate, data bits, parity, stop bits, flow control.
     
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  13. Citabria

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    Sorry, I didn't see your reply. I am just using a standard console cable which I also use for my routers and other network devices. I am not using putty, but termite, as this is what I am found on the internet on a dealer website. Sadly enough they don't share any connection settings, and they are also not willing to answer this question for me. It think it is bad if your customer support is so protective in their information. I keep on looking...

    The prime reason I am trying to connect to it is because the stove goes in error after random times. It show the error "Connection problem between control and motherboard". As a solution in the user manual Austroflamm says that this happens during an update of the motherboard and it should go away after the update is completed. It doesn't. At random times, at least once a day, it happens and the stove shuts down. After disconnecting the current, it works again. I want to check if I can change or see something on the console. Probably this is similar to other Austroflamm pellet stoves, so if someone gets a recent technical manual, the answer might be in there. My guess is that the battery is bad and that they stove cannot store it's state properly. They major problem is that opening this stove to get to the motherboard is a challenge without a proper manual.
     
  14. tadmaz

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  15. Citabria

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  16. Ssyko

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    Yep you need a null modem cable. The one you have is a through put cable.
     
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  17. Citabria

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    I do use a null modem cable. The cable you see it simply a serial port for a PC as they now lack serial ports, they use USB instead. So I use a null modem cable from the serial port, which is on this cable and stove.
     
  18. tadmaz

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    Your cable is "USB to Straight-Through RS232 DB9 Serial Adapter". Straight-through is different than a null modem cable. The converter I suggested might do the trick. Then again it may not :)
     
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  19. Citabria

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    Yes, but once again, this is not a cable, this is a port emulator. To avoid having too much focus on this adapter I found a very old system with a hardware serial port and connected my null modem cable, NOT the RS232 cable mentioned here above, a normal DB9 to RJ45 cable, direct in the COM port of the computer and the other end in the RJ45 of the stove. Result is the same. Random text output.
     
  20. Darkwing

    Darkwing
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    Can you post some of it here?
    Maybe someone knows the pattern
     
  21. tadmaz

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    Are you sure the new DB9 to RJ45 cable is a null modem cable? Usually those are labeled "NULL MODEM" on the DB9 connector. If it doesn't say that, it may also be a straight-through cable. I've seen the garbage text before, and got it fixed by buying the custom pinout cable, where it wasn't straight-through or null modem, it was its own proprietary pinout.
     
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  22. Citabria

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    It depends on the connection settings I give it. It looks complete random but I might try.

    This is a log in HEX:
    Terminal log file
    Date: 3/12/2018 - 23:17:45
    -----------------------------------------------
    0F 00 F7 17 00 FA 17 00 F7 17 00 D7 17 00 F0 17
    00 F7 17 00 D7 17 00 F7 17 00 D7 17 00 F7 17 00
    F7 1B 00 F7 17 00 F7 17 00 DB 1B 00 D7 17 00 F7
    17 00 D7 17 00 F7 17 00 D7 1B 00 F2 1B 00 F7 17
    00 F7 1B 00 F7 1A 00 F7 17 00 F7 17 00 D7 1B 00
    D7 1F 00 FB 17 00 F0 17 00 D7 17 00 F7 17 00 D7
    17 00 F7 17 00 F7 17 00 D7 17 00 FB 1B 00 F7 1A
    00 F7 17 00 FF 17 00 D7 17 00 F7 17 00 D7 17 00
    F7 17 00 D7 17 00 D7 17 00 F8 F7 F0 17 00 F0 F7
    F0 1F 00 F0 FB F0 00 00 D7 17 00 F7 17 00 F7 17
    00 D7 1F 00 F7 1B 00 FB 1B 00 F7 17 00 D7 17 00
    DB 17 00 F7 17 00 F7 17 00 DB 17 00 FF 17 00 D7
    17 00 D7 1B 00 DB 1F 00 FB 17 00 F7 17 00 D7 1F
    00 F7 17 00 D7 17 00 DB 17 00 F7 17 00 F7 17 00
    F7 17 00 DF 17 00 DB 17 00 F7 1B 00 F0 1B 00 F7
    17 00 D7 17 00 F2 17 00 D7 17 00 F0 17 00 D7 17
    00 FF 00 00 D7 17 00 F2 1B 00 F7 17 00 DA 17 00
    F7 1A 00 D7 17 00 F7 17 00 F7 17 00 DB 17 00 D7
    1F 00 FB 17 00 D7 17 00 D7 17 00 D7 17 00 F7 F0
    17 00 FC D7 FC 17 00 F0 DF F0 17 00 F0 FF 17 00
    D7 17 00 FA 1B 00 D7 17 00 F7 17 00 FA 17 00 D7
    17 00 FA 17 00 D7 00 00 F7 17 00 F7 1F 00 F7 17
    00 FA 1B 00 D7 17 00 D7 1F 00 D7 17 00 D7 17 00
    F7 17 00 F7 1B 00 F7 17 00 F0 17 00 D7 17 00 FF
    17 00 F7 17 00 F7 17 00 F7 17 00 FB 17 00 F2 17
    00 F7 17 00 D7 17 00 F7 17 00 D7 17 00 F7 1B 00
    F7 17 00 DF 17 00 F7 17 00 D7 17 00 F7 1F 00 F7
    00 00 D7 17 00 F7 17 00 F0 17 00 F7 1B 00 F7 17
    00 D7 17 00 F7 17 00 FB 1B 00 F7 1B 00 F7 17 00
    D7 17 00 FB 1F 00 FA D7 FA 17 00 F0 FA FD 17 00
    F0 D7 F0 17 00 D7 17 00 F7 17 00 FF 17 00 D7 17
    00 D7 17 00 D7 17 00 F7 1B 00 F7 17 00 F0 17 00
    FF 17 00 DA 17 00 FB 17 00 F7 17 00 F0 17 00 FF
    1A 00 D7 1B 00 FB 1B 00 D7 17 00 F7 17 00 FF 17
    00 D7 1A 00 F7 17 00 F7 17 00 D7 17 00 F7 1B 00
    D7 1B 00 F7 17 00 F7 17 00 D7 00 00 D7 1B 00 D7
    17 00 F7 17 00 FA 17 00 D7 17 00 F7 17 00 D7 1A
    00 FB 17 00 F7 1B 00 D7 17 00 DB 17 00 D7 17 00
    F7 1A 00 F7 17 00 D7 00 00 F7 17 00 FB 1B 00 D7
    17 00 D7 17 00 D7 17 00 F7 17 00 FA FA 17 00 F0
    FB FC 1B 00 FC D7 F0 17 00 FC FA 17 00 F7 17 00
    F2 17 00 F7 1B 00 F7 1F 00 D7 17 00 F7 17 00 F2
    17 00 D7 17 00 F7 17 00 DA 17 00 F7 1A 00 D7 17
    00 D7 1A 00 F7 17 00 D7 17 00 F7 17 00 F7 1F 00
    DB 17 00 F7 17 00 D7 17 00
    -----------------------------------------------
    Date: 3/12/2018 - 23:17:58
    End log file


    This is one in ASCII:
    Terminal log file
    Date: 3/12/2018 - 23:27:54
    -----------------------------------------------
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    -----------------------------------------------
    Date: 3/12/2018 - 23:28:10
    End log file
     
  23. Citabria

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    I am using this exact cable: https://produto.mercadolivre.com.br/MLB-1006349064-cabo-console-cable-g16-hp-3com-cisco-rj45-x-db9-femea-novo-_JM?quantity=1
     
  24. Citabria

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    I have just tried yet another cable. This time from Cisco, same result. But then I found a very old DB9 connector that once came with some very old network device. When I plug a normal network cable in that DB-9 connector and the other end of the network cable in the stove, I get at baud 2400 a constant return of FF in HEX. Whatever that means, as I expect that a normal CAT5 cable isn't the correct cable for this job.
     
  25. Citabria

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