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  1. #1
    . worm4's Avatar
    Join Date: Jul:2005
    Location: Varna
    Posts: 20,295

    CRC

    CRC ? :
    Code:
    00 7E 7E 00 FF 11 07 50 06 02 01 00 00 BC
    00 7E 7E 01 FF 11 07 50 06 02 01 00 00 BD
    00 7E 7E 02 FF 11 07 50 06 02 01 00 00 BE
    00 7E 7E 03 FF 11 07 50 06 02 01 00 00 BF
    00 7E 7E 04 FF 11 07 50 06 02 01 00 00 B8
    00 7E 7E 05 FF 11 07 50 06 02 01 00 00 B9
    00 7E 7E 06 FF 11 07 50 06 02 01 00 00 BA
    00 7E 7E 07 FF 11 07 50 06 02 01 00 00 BB
    00 7E 7E 08 FF 11 07 50 06 02 01 00 00 B4
    00 7E 7E 09 FF 11 07 50 06 02 01 00 00 B5
    00 7E 7E 0A FF 11 07 50 06 02 01 00 00 B6
    00 7E 7E 0B FF 11 07 50 06 02 01 00 00 B7
    00 7E 7E 0C FF 11 07 50 06 02 01 00 00 B0
    00 7E 7E 0D FF 11 07 50 06 02 01 00 00 B1
    00 7E 7E 0E FF 11 07 50 06 02 01 00 00 B2
    00 7E 7E 0F FF 11 07 50 06 02 01 00 00 B3
    
    00 7E 7E 00 FF 11 07 50 06 02 02 00 00 BF
    00 7E 7E 01 FF 11 07 50 06 02 02 00 00 BE
    00 7E 7E 02 FF 11 07 50 06 02 02 00 00 BD
    00 7E 7E 03 FF 11 07 50 06 02 02 00 00 BC
    00 7E 7E 04 FF 11 07 50 06 02 02 00 00 BB
    00 7E 7E 05 FF 11 07 50 06 02 02 00 00 BA
    00 7E 7E 06 FF 11 07 50 06 02 02 00 00 B9
    00 7E 7E 07 FF 11 07 50 06 02 02 00 00 B8
    00 7E 7E 08 FF 11 07 50 06 02 02 00 00 B7
    00 7E 7E 09 FF 11 07 50 06 02 02 00 00 B6
    00 7E 7E 0A FF 11 07 50 06 02 02 00 00 B5
    00 7E 7E 0B FF 11 07 50 06 02 02 00 00 B4
    00 7E 7E 0C FF 11 07 50 06 02 02 00 00 B3
    00 7E 7E 0D FF 11 07 50 06 02 02 00 00 B2
    00 7E 7E 0E FF 11 07 50 06 02 02 00 00 B1
    00 7E 7E 0F FF 11 07 50 06 02 02 00 00 B0
    . , ?


    Edit:
    , . "CRC"
    . , , XOR, , , , , .
    Last edited by worm4; 5th May 2009 at 00:40.
    "Arbeit macht frei" -
    - . , :..,,--?!
    OgiDogi: , , ..,

  2. #2

    Join Date: Sep:2005
    Location: Sofia
    Posts: 18,517
    CRC?
    - ?

  3. #3
    Registered User
    Join Date: Oct:2006
    Location: Plovdiv
    Posts: 305
    01 00 00 00 .... 00 02 00 ..... 01 01 00 00 ... 00 .. . -
    prepBut nI vrbLike adjHungarian! qWhat's artThe adjBig nProblem?

  4. #4
    philosophus duratea icaci's Avatar
    Join Date: Oct:2006
    Location: Aachen
    Posts: 2,698
    , + , , XOR , .. XOR 00 ( x XOR x = 00). , , , , . XOR 00.
    Internet - it doesn't make you stupid, it just makes your stupidity more accessible to others

  5. #5
    Registered User
    Join Date: Oct:2003
    Location:
    Posts: 4,317

  6. #6
    . worm4's Avatar
    Join Date: Jul:2005
    Location: Varna
    Posts: 20,295
    CRC " " .
    icaci ....
    , XOR -, . 2 , . VB- .
    MODBUS:
    Code:
            CRC = 65535
            Generator = 40961
    
            For i = 1 To Length
                Temp = Asc(Mid(OutputString, i, 1))
                CRC = CRC Xor Temp
                For j = 1 To 8
                    Bit = CRC And 1
                    CRC = CRC \ 2
                    If Bit = True Then
                        CRC = CRC Xor Generator
                    End If
                Next j
            Next i
    .
    , XOR , XOR XOR .


    .
    "Arbeit macht frei" -
    - . , :..,,--?!
    OgiDogi: , , ..,

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