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//table of the lower CRC byte const unsigned char crc_lo[ ]={

0x00,

0xC0,

0xC1,

0x01,

0xC3,

0x03,

0x02,

0xC2,

0xC6,

0x06,

0x07,

0xC7,

0x05,

0xC5,

0xC4,

0x04,

0xCC,

0x0C,

0x0D,

0xCD,

0x0F

,

0xCF

,0xCE,

0x0E,

0x0A,

0xCA,

0xCB,

0x0B,

0xC9,

0x09,

0x08,

0xC8,

0xD8,

0x18,

0x19,

0xD9,

0x1B,

0xDB,

0xDA,

0x1A,

0x1E,

0xDE,

0xDF

,0x1F

,

0xDD,

0x1D,

0x1C,

0xDC,

0x14,

0xD4,

0xD5,

0x15,

0xD7,

0x17,

0x16,

0xD6,

0xD2,

0x12,

0x13,

0xD3,

0x1

1,

0xD1,

0xD0,

0x10,

0xF0,

0x30,

0x31,

0xF1,

0x33,

0xF3,

0xF2,

0x32,

0x36,

0xF6,

0xF7,

0x37,

0xF5,

0x35,

0x34,

0xF4,

0x3C,

0xFC,

0xFD,

0x3D,

0xFF

,

0x3F

,

0x3E,

0xFE,

0x

FA,

0x3A,

0x3B,

0xFB,

0x39,

0xF9,

0xF8,

0x38,

0x28,

0xE8,

0xE9,

0x29,

0xEB,

0x2B,

0x2A,

0xEA,

0xEE,

0x2E,

0x2F

,

0xEF

,0x2D,

0xED,

0xEC,

0x2C,

0xE4,

0x24,

0x25,

0xE5,

0x27,

0xE7,

0xE6,

0x26,

0x22,

0xE2,

0xE3,

0x23,

0xE1,

0x21,

0x20,

0xE0,

0xA0,

0x60,

0x61,

0xA1,

0x63,

0xA3,

0xA2,

0x62,

0x66,

0xA6,

0xA7,

0x67,

0xA5,

0x65,

0x64,

0xA4,

0x6C,

0xAC,

0xAD,

0x6D,

0xAF

,0x6F

,

0x6E,

0xAE,

0xAA,

0x6A,

0x6B,

0xAB,

0x69,

0xA9,

0xA8,

0x68,

0x78,

0xB8,

0xB9,

0x79,

0xBB,

0x7B,

0x7A,

0xBA,

0xBE,

0x7E,

0x7F

,

0xBF

,0x7D,

0xBD,

0xBC,

0x7C,

0xB4,

0x74,

0x75,

0xB5,

0x77,

0xB7,

0xB6,

0x76,

0x72,

0xB2,

0xB3,

0x73,

0xB1,

0x71,

0x70,

0xB0,

0x50,

0x90,

0x91,

0x51,

0x93,

0x53,

0x52,

0x92,

0x96,

0x56,

0x57,

0x97,

0x55,

0x95,

0x94,

0x54,

0x9C,

0x5C,

0x5D,

0x9D,

0x5F

,

0x9F

,

0x9E,

0x5E,

0x5A,

0x9A,

0x9B,

0x5B,

0x99,

0x59,

0x58,

0x98,

0x88,

0x48,

0x49,

0x89,

0x4B,

0x8B,

0x8A,

0x4A,

0x4E,

0x8E,

0x8F

,

0x4F

,

0x8D,

0x4D,

0x4C,

0x8C,

0x44,

0x84,

0x85,

0x45,

0x87,

0x47,

0x46,

0x86,

0x82,

0x42,

0x43,

0x83,

0x41,

0x81,

0x80,

0x40

};

Содержание RE15

Страница 1: ...1 USER S MANUAL SERIAL INTERFACE WITH MODBUS PROTOCOL MICROPROCESSOR CONTROLLER RE15...

Страница 2: ...2...

Страница 3: ...haracter format in series transmission 10 2 7 Transaction interruption 10 3 DESCRIPTION OF FUNCTIONS 11 3 1 Readout of N registers Code 03 11 3 2 Writing of values into the register Code 06 12 3 3 Wri...

Страница 4: ...address 1 247 Baud rate 2400 4800 9600 bits s Working modes ASCII RTU Information unit ASCII 8N1 7E1 7O1 and RTU 8N2 8E1 8O1 8N1 Maximal turnaround time 1s Explanation of some abreviations ASCII Ameri...

Страница 5: ...direction The response includes data demanded by the master or the realised confirmation of its command Master can transmit information to individual slaves or broadcast messages destined for all subo...

Страница 6: ...e basic feature of this mode is that it allows to long intervals between characters within the message to1sec without causing errors A typical message frame is shown below Start Address Function Data...

Страница 7: ...the slave sends its response it places its own address in the frame address field what enables the master to check which slave is responding The 0 address is used as a broadcast address recognized by...

Страница 8: ...hecking field Two kinds of error checking methods are used for standard MODBUS networks The error checking field contents depends upon the applied transmission mode When ASCII mode is used for charact...

Страница 9: ...e EXOR operation with the low order byte of the CRC register Place the result into the CRC register 3 Shift the CRC register contents one bit to the right towards the LSB write 0 on the most significa...

Страница 10: ...bits when lack of even parity check 2 7 Transaction interruption In the master unit the user sets up the important parameter which is the maximal response time on the query frame after which exceedin...

Страница 11: ...ded with changeable processes and the like The demand frame defines the 16 bit start address and the number of registers to read out The maximal number of registers read out by one command is 128 for...

Страница 12: ...03 06 02 2B 00 00 00 64 55 LRC 3 2 Writing of values in the register code 06 Demand The function enables the modification of the register contents is accessible in broadcast mode Example Address Func...

Страница 13: ...0 87 00 02 04 00 0A 01 02 45 Answer The correct answer includes the unit slave address function code starting address and the number of recorded registers Example Address Function Register Register Nu...

Страница 14: ...ype of Execution Checksum address of bytes identifier additional output number2 input 11 11 4 68 xx1 yy2 03 1 XX value as in the controller execution code Item related with the additional input 2 YY f...

Страница 15: ...demand without a transmission error but cannot execute it correctly e g if the demand is the reading out of a non existent bit output or register then it returns the answer including the error code in...

Страница 16: ...0 register 11A8h and the answer of the slave unit forbidden data address because the maximal register address in the RE15 con troller is 4519 Data are in the hexadecimal shape Example demand Slave Fun...

Страница 17: ...Lcpp 0 1 2 Number of digits after coma value 2 for linear inputs 4005 R W Shjf 999 999 Shift of measured value1 4006 R W spll 999 splH Lower range of the measured value on the main input1 4007 R W spl...

Страница 18: ...Set value for the constant control 1 on the input 4023 R W naro 0 999 Change speed of the set value during the soft start 10 4024 R W Nrpr 1 15 Program number executed for the programmed control 4025...

Страница 19: ...self adaptation 1 identyfying method 2 oscillation method 4054 R W lcyc 1 99 Number of program cycles p 4773 Register number r for the program p is equal address r p 1 48 4054 of each R W bloh 0 999...

Страница 20: ...pped bit 12 1 program blocking because of a too high deviation bit 13 binary input state 0 open 1 short circuited bit 14 and 15 position of decimal point 00 without decimal point 01 decimal on the pos...

Страница 21: ...210 258 306 354 402 450 498 546 594 642 690 738 SP4 or ti4 67 115 163 211 259 307 355 403 451 499 547 595 643 691 739 Eout blok 68 116 164 212 260 308 356 404 452 500 548 596 644 692 740 nA 5 69 117...

Страница 22: ...186 234 282 330 378 426 474 522 570 618 666 714 762 SP12 or ti12 91 139 187 235 283 331 379 427 475 523 571 619 667 715 763 Eout blok 92 140 188 236 284 332 380 428 476 524 572 620 668 716 764 nA13 9...

Страница 23: ...n returns LRC of unsigned char type static unsigned char LRC outMsg usDataLen unsigned char outMsg buffer to calculate LRC unsigned short usDataLen number of bytes in the buffer unsigned char uchLRC 0...

Страница 24: ...r for the communication buffer including binary data from which one must calculate LRC unsigned short usDataLen Number of bytes in the communication buffer The function returns CRC of unsigned short t...

Страница 25: ...x80 0x41 0x01 0xC0 0x80 0x41 0x00 0xC1 0x81 0x40 0x01 0xC0 0x80 0x41 0x00 0xC1 0x81 0x40 0x00 0xC1 0x81 0x40 0x01 0xC0 0x80 0x41 0x01 0xC0 0x80 0x41 0x00 0xC1 0x81 0x40 0x00 0xC1 0x81 0x40 0x01 0xC0 0...

Страница 26: ...x2A 0xEA 0xEE 0x2E 0x2F 0xEF 0x2D 0xED 0xEC 0x2C 0xE4 0x24 0x25 0xE5 0x27 0xE7 0xE6 0x26 0x22 0xE2 0xE3 0x23 0xE1 0x21 0x20 0xE0 0xA0 0x60 0x61 0xA1 0x63 0xA3 0xA2 0x62 0x66 0xA6 0xA7 0x67 0xA5 0x65 0...

Страница 27: ...27...

Страница 28: ...at w Elektrycznych LUMEL S A ul Sulechowska 1 65 022 Zielona G ra Poland Tel 48 68 32 95 100 exchange Fax 48 68 32 95 101 www lumel com pl e mail lumel lumel com pl Export Department Tel 48 68 329 53...

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