Rs485 Using Hserin/hserout

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  1. - 27th January 2008, 10:11 #1
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    koossa
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    Darrel, thank you very much!!!

    I have updated my Schematic, could you please confirm that I understand it correctly (see attachment)?

    Koossa
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  2. - 27th January 2008, 22:45 #2
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    Yup!

    That looks good.
    <br>
    DT
  3. - 29th January 2008, 11:05 #3
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    I have updated everything now, but when I start it up it return the following, no matter if the Slave is running or not.

    <b>
    WAITING FOR REPLY..
    WAITING FOR REPLY..
    WAITING FOR REPLY..
    WAITING FOR REPLY..
    WAITING FOR REPLY..
    WAITING FOR REPLY..
    WAITING FOR REPLY..
    WAITING FOR REPLY..
    WAITING FOR REPLY..
    WAITING FOR REPLY..
    WAITING FOR REPLY..
    WAITING FOR REPLY..
    WAITING FOR REPLY..
    WAITING FOR REPLY..
    WAITING FOR REPLY..
    WAITING FOR REPLY..
    WAITING FOR REPLY..
    WAITING FOR REPLY..
    WAITING FOR REPLY..
    </b>


    Could this be a wiring problem or maybe something wrong in my code?

    Thx
    Koossa
  4. - 29th January 2008, 21:41 #4
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    You might try removing the handshaking part.
    Have the slave continuously transmit to the master, and see if you're getting anything.

    If not, then yeah, it could be a wiring problem.
    Or, 10-20 other things.
    <br>
    DT
  5. - 30th January 2008, 01:43 #5
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    Default Background Question

    Hi Koossa,
    Background Question:
    How much distance between master and slave? I am thinking maybe baud rate is too high due to line capacitance, I just had that problem with an ethernet connection, couldn't use 100 had to tell computer to use 10mbs.
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  6. - 30th January 2008, 10:11 #6
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    Joe, the distance between my Master and slave is only about 1.5 meters.

    <hr>
    Darrel

    When I remove the handshacking it is working!!

    <b>
    WAITING FOR REPLY..
    REC:1
    WAITING FOR REPLY..
    REC:1
    WAITING FOR REPLY..
    REC:1
    WAITING FOR REPLY..
    REC:1
    WAITING FOR REPLY..
    REC:1
    WAITING FOR REPLY..
    REC:1
    WAITING FOR REPLY..
    REC:1
    </b>

    Do I need to play arround with "pause"?
  7. - 30th January 2008, 14:54 #7
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    See Posts #2 & #5.
    Failing that, post the program as it sits now...
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