Format Des Commandes - Michael MBWBLUE Mode D'emploi

Format des commandes

Le format général des commandes du MBWBLUE est décrit ci-dessous (tous les
octets en format hexadécimal) :
01 FE LL CD [Data] CRC CRC
01 FE:
LL:
CD:
[Data]:
CRC CRC:
Le CRC se calcul en utilisant le polynôme ci-dessous :
X16 + X13 + X12 + X11 + X10 + X8 + X6 + X5 + X2 + 1
Le CRC est calculé sur tous les octets de la commande sauf les deux octets du CRC
(dès les deux octets du départ au dernier octet avant le CRC).
Pour coder on peut utiliser l'exemple ci-dessous :
WORD CRCTable[256]={
0x0000,0x3D65,0x7ACA,0x47AF,0xF594,0xC8F1,0x8F5E,0xB23B,
0xD64D,0xEB28,0xAC87,0x91E2,0x23D9,0x1EBC,0x5913,0x6476,
0x91FF,0xAC9A,0xEB35,0xD650,0x646B,0x590E,0x1EA1,0x23C4,
0x47B2,0x7AD7,0x3D78,0x001D,0xB226,0x8F43,0xC8EC,0xF589,
0x1E9B,0x23FE,0x6451,0x5934,0xEB0F,0xD66A,0x91C5,0xACA0,
0xC8D6,0xF5B3,0xB21C,0x8F79,0x3D42,0x0027,0x4788,0x7AED,
0x8F64,0xB201,0xF5AE,0xC8CB,0x7AF0,0x4795,0x003A,0x3D5F,
0x5929,0x644C,0x23E3,0x1E86,0xACBD,0x91D8,0xD677,0xEB12,
0x3D36,0x0053,0x47FC,0x7A99,0xC8A2,0xF5C7,0xB268,0x8F0D,
0xEB7B,0xD61E,0x91B1,0xACD4,0x1EEF,0x238A,0x6425,0x5940,
0xACC9,0x91AC,0xD603,0xEB66,0x595D,0x6438,0x2397,0x1EF2,
0x7A84,0x47E1,0x004E,0x3D2B,0x8F10,0xB275,0xF5DA,0xC8BF,
0x23AD,0x1EC8,0x5967,0x6402,0xD639,0xEB5C,0xACF3,0x9196,
0xF5E0,0xC885,0x8F2A,0xB24F,0x0074,0x3D11,0x7ABE,0x47DB,
0xB252,0x8F37,0xC898,0xF5FD,0x47C6,0x7AA3,0x3D0C,0x0069,
0x641F,0x597A,0x1ED5,0x23B0,0x918B,0xACEE,0xEB41,0xD624,
0x7A6C,0x4709,0x00A6,0x3DC3,0x8FF8,0xB29D,0xF532,0xC857,
0xAC21,0x9144,0xD6EB,0xEB8E,0x59B5,0x64D0,0x237F,0x1E1A,
0xEB93,0xD6F6,0x9159,0xAC3C,0x1E07,0x2362,0x64CD,0x59A8,
0x3DDE,0x00BB,0x4714,0x7A71,0xC84A,0xF52F,0xB280,0x8FE5,
0x64F7,0x5992,0x1E3D,0x2358,0x9163,0xAC06,0xEBA9,0xD6CC,
0xB2BA,0x8FDF,0xC870,0xF515,0x472E,0x7A4B,0x3DE4,0x0081,
0xF508,0xC86D,0x8FC2,0xB2A7,0x009C,0x3DF9,0x7A56,0x4733,
0x2345,0x1E20,0x598F,0x64EA,0xD6D1,0xEBB4,0xAC1B,0x917E,
0x475A,0x7A3F,0x3D90,0x00F5,0xB2CE,0x8FAB,0xC804,0xF561,
0x9117,0xAC72,0xEBDD,0xD6B8,0x6483,0x59E6,0x1E49,0x232C,
0xD6A5,0xEBC0,0xAC6F,0x910A,0x2331,0x1E54,0x59FB,0x649E,
0x00E8,0x3D8D,0x7A22,0x4747,0xF57C,0xC819,0x8FB6,0xB2D3,
0x59C1,0x64A4,0x230B,0x1E6E,0xAC55,0x9130,0xD69F,0xEBFA,
0x8F8C,0xB2E9,0xF546,0xC823,0x7A18,0x477D,0x00D2,0x3DB7,
0xC83E,0xF55B,0xB2F4,0x8F91,0x3DAA,0x00CF,0x4760,0x7A05,
0x1E73,0x2316,0x64B9,0x59DC,0xEBE7,0xD682,0x912D,0xAC48};
WORD CRCValue;
int Counter;
int BufferLen;
BYTE Buffer[100];
38
Deux octets du départ
Octet de la longueur (contient tous les octets, ci-inclus le deux
octets du départ et les octets CRC)
Commande
0...249 octets des données
Cyclic redundancy check, l'octet de poids fort est transmis au
début
MBWBLUE