in reply to Re^3: deal data transfer
in thread deal data transfer

lol~~ let's focus on perl programming.




I am trying to improve my English skills, if you see a mistake please feel free to reply or /msg me a correction

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Re^5: deal data transfer
by BrowserUk (Patriarch) on May 18, 2011 at 03:09 UTC
    let's focus on perl programming.

    I was. Specifically, the IEC 60870-5-101 telegram structure.

    But I guess you misunderstood me.


    Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
    "Science is about questioning the status quo. Questioning authority".
    In the absence of evidence, opinion is indistinguishable from prejudice.
      eh, well, I thought whatever protocol the program runs over, the basic procedure would be the same, listen the port, receive request, fetch data somewhere, pack etc. Maybe I was wrong. any suggestions if protocol is IEC 101?




      I am trying to improve my English skills, if you see a mistake please feel free to reply or /msg me a correction

        In general, when looking to try and help someone, it is easier to read actual documentation, than go through an extended question and answer trying to tie down the details.

        Questions like: are the numeric values little or big-endian; how are the checksums calculated; are the packets fixed or variable length; if variable, are they length prefixed or post-delimited; etc. All of this is clear from the documentation.

        Which brings me to the question: what is it that you are really asking for help with? What is it that you are having trouble doing?


        Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
        "Science is about questioning the status quo. Questioning authority".
        In the absence of evidence, opinion is indistinguishable from prejudice.