7
7rots51
Guest
Labas
Kas turi nuorodą ar kodas Modbus RTU?
ačiū
Kas turi nuorodą ar kodas Modbus RTU?
ačiū
J
joebazoka
Guest
Turiu Modbus kodas Triušiai procesorius, jei norite, PM ir aš nusiųsti šią.Linkėjimai
B
boleft
Guest
Kodas
# define READ_COIL 01
# define READ_DI 02
# define READ_HLD_REG 03
# define READ_AI 04
# define SET_COIL 05
# define SET_HLD_REG 06
# define READ_FIFO 24
# define PROTOCOL_EXCEPTION 0x81
# define PROTOCOL_ERR 1
# define FRM_ERR 2
/ / unsigned char tx_buf [256], rx_buf [256];const unsigned char auchCRCHi [] = (
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 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, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 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, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,
0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 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, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01,
0xC0, 0x80, 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, 0x00, 0xC1, 0x81,
0x40, 0x01, 0xC0, 0x80, 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, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
0x40
);const unsigned char auchCRCLo [] = (
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,
0x11, 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, 0xFA, 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
);const unsigned char char_tab [128] =
(0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,1,2,3,4,5,6,7,8,9,0,0,0,0,0,0,
0,0 x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0 x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
);
const unsigned char tab_char [16] =
('0 ', '1', '2 ', '3', '4 ', '5', '6 ', '7', '8 ', '9', '', 'B', ' C "," D "," E "," F ");parašo trumpą CRC (unsigned char * puchMsg, parašo trumpą usDataLen)
(
unsigned char uchCRCHi = 0xFF; / * High baitas CRC inicializuoti * /
unsigned char uchCRCLo = 0xFF; / * mažas baitas CRC inicializuoti * /
unsigned uIndex; / * bus rodyklė į Konvencijoje lookup table * /
while (usDataLen -) / * pro pranešimą buferis * /
(uIndex = uchCRCHi ^ * puchMsg ; / * apskaičiuoti CRC * /
uchCRCHi = uchCRCLo ^ auchCRCHi [uIndex];
uchCRCLo = auchCRCLo [uIndex];
)
return (uchCRCHi <<8 | uchCRCLo);
)unsigned char a2toh (unsigned char * str)
(
unsigned char tmp;
tmp = 0;
TMP = char_tab [* str];
str ;
tmp = tmp * 16 char_tab [* str];
return tmp
LC get_bit (unsigned int duomenų LC bit)
(
const unsigned int bit_tab [] =
(
0x1, 0x2, 0x4, 0x8, 0x10, 0x20, 0x40, 0x80,
0x100, 0x200, 0x400, 0x800, 0x1000, 0x2000, 0x4000, 0x8000
);if (bitų> 16) return 0;
if (duomenų ir bit_tab [bit]) return 1;
else return 0tuščia htoa (char * str, unsigned char Num)
(
unsigned char tmp;
TMP = num;
tmp = tmp &0xf0;
tmp>> = 4;
* str = tab_char [tmp];
str ;
* str = tab_char [NUM & 0x0f]LC asctortu (unsigned char * dest, unsigned char * source)
(
unsigned char * tmp;
unsigned char i;
i = 0;
TMP = dest;
if (* Šaltinis !=':') return 0;
šaltinis ;while (* šaltinis! = 0x0d)
(
* tmp = a2toh (šaltinis);
tmp ;
šaltinis ;
šaltinis ;
i ;
)
šaltinis ;
if (* šaltinis! = 0x0a) return 0;
else (
return i;
)
)
tuščia rtutoascii (unsigned char * dest, unsigned char * source, int ilgio)(
dest ;for (; ilgio> 0; ilgio -)
(
htoa (dest * šaltinį);
dest ;
dest ;
šaltinis)
tuščia rtutoasc (unsigned char * dest, unsigned char * source, int ilgio)(
dest ;for (; ilgio> 0; ilgio -)
(
htoa (dest * šaltinį);
dest ;
dest ;
šaltinis)unsigned char LRC (unsigned char * str, int ilgio)
(
unsigned char tmp;
tmp = 0;
while (ilgio -)
(
tmp = * strreturn ((unsigned char )(-(( char) TMP)))tuščia construct_ascii_frm (unsigned char * dst_buf, unsigned char * src_buf, unsigned char ilgio)
(
unsigned char lrc_tmp;
lrc_tmp = LRC (src_buf, ilgio);
* (src_buf ilgio) = lrc_tmp;
ilgio ;
* dst_buf =':';
rtutoascii (dst_buf, src_buf, ilgio);
* (2 * dst_buf ilgio) = 0x0d;
* (2 * dst_buf ilgio 1) = 0x0a;
)tuščia construct_rtu_frm (unsigned char * dst_buf, unsigned char * src_buf, unsigned char ilgio)
(
unsigned trumpas crc_tmp;
crc_tmp = CRC (src_buf, ilgio);
* (src_buf ilgio) = crc_tmp>> 8;
* (src_buf ilgio 1) = crc_tmp & 0xFF;
ilgio ; ilgio ;while (ilgio -)
(* dst_buf =* src_buf;
dst_buf ;
src_buf
)
/ *
1读取继电器状态
发送:
*
LC ascii_read_coil_status (unsigned char board_adr, unsigned char * com_buf, int start_address, int ilgio)(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = READ_COIL;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
tmp [4] = lenth/256;
tmp [5] = ilgio &0xff;
tmp_lenth = 6;
construct_ascii_frm (com_buf, tmp, tmp_lenth);
return 17;
)
LC rtu_read_coil_status (unsigned char board_adr, unsigned char * com_buf, int start_address, int ilgio)(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = READ_COIL;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
tmp [4] = lenth/256;
tmp [5] = ilgio &0xff;
tmp_lenth = 6;
construct_rtu_frm (com_buf, tmp, tmp_lenth);
return 8;
)
/ *
2读取开关量输入
发送:
*
LC ascii_read_input_status (unsigned char board_adr, unsigned char * com_buf, int start_address, int ilgio)(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = READ_DI;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
tmp [4] = lenth/256;
tmp [5] = ilgio &0xff;
tmp_lenth = 6;
construct_ascii_frm (com_buf, tmp, tmp_lenth);
return 17;
)
LC rtu_read_input_status (unsigned char board_adr, unsigned char * com_buf, int start_address, int ilgio)(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = READ_DI;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
tmp [4] = lenth/256;
tmp [5] = ilgio &0xff;
tmp_lenth = 6;
construct_rtu_frm (com_buf, tmp, tmp_lenth);
return 8;
)
/ *
3读取保持寄存器
发送:
*
LC ascii_read_hldreg (unsigned char board_adr, unsigned char * com_buf, int start_address, int ilgio)(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = READ_HLD_REG;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
tmp [4] = lenth/256;
tmp [5] = ilgio &0xff;
tmp_lenth = 6;
construct_ascii_frm (com_buf, tmp, tmp_lenth);
return 17;
)LC rtu_read_hldreg (unsigned char board_adr, unsigned char * com_buf, int start_address, int ilgio)(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = READ_HLD_REG;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
tmp [4] = lenth/256;
tmp [5] = ilgio &0xff;
tmp_lenth = 6;
construct_rtu_frm (com_buf, tmp, tmp_lenth);
return 8;
)
/ *
4读取模拟量输入
发送:
*
LC ascii_read_anloginput (unsigned char board_adr, unsigned char * com_buf, int start_address, int ilgio)
(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = READ_AI;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
tmp [4] = lenth/256;
tmp [5] = ilgio &0xff;
tmp_lenth = 6;
construct_ascii_frm (com_buf, tmp, tmp_lenth);
return 17;
)
LC rtu_read_anloginput (unsigned char board_adr, unsigned char * com_buf, int start_address, int ilgio)(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = READ_AI;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
tmp [4] = lenth/256;
tmp [5] = ilgio &0xff;
tmp_lenth = 6;
construct_rtu_frm (com_buf, tmp, tmp_lenth);
return 8;
)
/ *
5设置继电器
发送: status = 0继电器释放否则继电器吸合, adresas为吸合的继电器编号, 0为第一个继电器,依次类推
*
LC ascii_set_coil (unsigned char board_adr, unsigned char * com_buf, int start_address, int statusas)
(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = SET_COIL;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
if (statusas)
(
tmp [4] = 0xFF;
tmp [5] = 0;
)
kitas
(
tmp [4] = 0;
tmp [5] = 0;
)tmp_lenth = 6;
construct_ascii_frm (com_buf, tmp, tmp_lenth);
return 17;
)LC rtu_set_coil (unsigned char board_adr, unsigned char * com_buf, int start_address, int statusas)
(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = SET_COIL;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
if (statusas)
(
tmp [4] = 0xFF;
tmp [5] = 0;
)
kitas
(
tmp [4] = 0;
tmp [5] = 0;
)tmp_lenth = 6;
construct_rtu_frm (com_buf, tmp, tmp_lenth);
return 8;
)
/ *
6设置保持寄存器
*
LC ascii_set_hldreg (unsigned char board_adr, unsigned char * com_buf, int start_address, int value)
(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = SET_HLD_REG;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
tmp [4] = value/256;
tmp [5] = vertė &0xff;
tmp_lenth = 6;
construct_ascii_frm (com_buf, tmp, tmp_lenth);
return 17;
)
LC rtu_set_hldreg (unsigned char board_adr, unsigned char * com_buf, int start_address, int value)
(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = SET_HLD_REG;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
tmp [4] = value/256;
tmp [5] = vertė &0xff;
tmp_lenth = 6;
construct_rtu_frm (com_buf, tmp, tmp_lenth);
return 8;
)
/ *
7
接收分析:
dest_p接收到数据指针
sourc_p串口接收缓冲区指针
data_start_address开始地址
*/ * RTU接收分析* /
LC rtu_data_anlys (int * dest_p, unsigned char * source_p, int data_start_address, int fr_lenth)
(
unsigned trumpas crc_result, crc_tmp;
unsigned char tmp1, tmp2, shift;crc_tmp =* (source_p fr_lenth-2);
crc_tmp = crc_tmp * 256 * (source_p fr_lenth-1);
crc_result = CRC (source_p, fr_lenth-2);if (crc_tmp! = crc_result)
(
hld_reg [0x31] ;
return -1;
)
switch (* (source_p 1))
(
atveju READ_COIL: / *读取继电器状态* /
for (tmp1 = 0; tmp1 <* (source_p 2); tmp1 )
(
perėjimas = 1;
for (tmp2 = 0; tmp2 <8; tmp2 )
(
* (dest_p data_start_address tmp1 * 8 tmp2) = shift & * (source_p 3);
* (Source_p 3)> = 1
)
break;atveju READ_DI: / *读取开关量输入* /
for (tmp1 = 0; tmp1 <* (source_p 2); tmp1 )
(
perėjimas = 1;
for (tmp2 = 0; tmp2 <8; tmp2 )
(* (Dest_p data_start_address tmp1 * 8 tmp2) = shift & * (source_p 3);
* (Source_p 3)> = 1
)
break;atveju READ_HLD_REG: / *读取保持寄存器* /
for (tmp1 = 0; tmp1 <* (source_p 2); tmp1 = 2)
(
* (dest_p data_start_address tmp1 / 2) = * (source_p tmp1 3) * 256 * (source_p tmp1 4)
break;case 4: / *读取模拟量输入* /
for (tmp1 = 0; tmp1 <* (source_p 2); tmp1 = 2)
(
* (dest_p data_start_address tmp1 / 2) = * (source_p tmp1 3) * 256 * (source_p tmp1 4)
break;atveju PROTOCOL_EXCEPTION:
return -1 * PROTOCOL_ERR;
break;default:
return -1 * PROTOCOL_ERR;
break;
)return 0LC ascii_data_anlys (int * dest_p, char * source_p, int data_start_address)
(
unsigned char tmp [256];
LC ilgio;
LC tmp1, tmp2;
char pamainą;ilgio = asctortu (TMP, source_p);
if (ilgio == 0) return -1 * FRM_ERR;
switch (TVP) [1]
(
atveju READ_COIL: / *读取继电器状态* /
for (tmp1 = 0; tmp1 <tmp [2]; tmp1 )
(
perėjimas = 1;
for (tmp2 = 0; tmp2 <8; tmp2 )
(* (Dest_p data_start_address tmp1 * 8 tmp2) = shift & tmp [tmp1 3];tmp [tmp1 3]>> = 1;
)
)
break;atveju READ_DI: / *读取开关量输入* /
for (tmp1 = 0; tmp1 <tmp [2]; tmp1 )
(
perėjimas = 1;
for (tmp2 = 0; tmp2 <8; tmp2 )
(* (Dest_p data_start_address tmp1 * 8 tmp2) = shift & tmp [tmp1 3];
tmp [tmp1 3]>> = 1;
)
)
break;atveju READ_HLD_REG: / *读取保持寄存器* /
for (tmp1 = 0; tmp1 <tmp [2]; tmp1 = 2)
(
* (dest_p data_start_address tmp1 / 2) = tmp [tmp1 3] * 256 tmp [tmp1 4]
break;case 4: / *读取模拟量输入* /
for (tmp1 = 0; tmp1 <tmp [2]; tmp1 = 2)
(
* (dest_p data_start_address tmp1 / 2) = tmp [tmp1 3] * 256 tmp [tmp1 4]
break;atveju PROTOCOL_EXCEPTION:
return -1 * PROTOCOL_ERR;
break;default:
break;
)return 0/ *
主程序按照一定的顺序调用1 ~ 6子程序,然后把生成的缓存内容写入串口.
接收到数据送给7的子程序分析即可.
ASCII方式下,用0X0D, 0x0a作为帧结束判断的依据
RTU方式下,以两个字节间的时间间隔大于3,5倍的一个字符周期为帧结束判断依据
Read () write ()是两个假想存在的函数
*/ * void main (void)
(
ascii_read_coil_status (1, tx_buf, 0,8);
rašyti (COM1, tx_buf);
skaityti (COM1, rx_buf);
ascii_data_anlys (ritė, rx_buf, 0);ascii_read_input_status (1, tx_buf, 0,8);
rašyti (COM1, tx_buf);
skaityti (COM1, rx_buf);
ascii_data_anlys (di, rx_buf, 0);ascii_read_hldreg (1, tx_buf, 0,8);
rašyti (COM1, tx_buf);
skaityti (COM1, rx_buf);
ascii_data_anlys (hld_reg, rx_buf, 0);ascii_read_anloginput (1, tx_buf, 0,8);
rašyti (COM1, tx_buf);
skaityti (COM1, rx_buf);
ascii_data_anlys (ai, rx_buf, 0);ascii_set_coil (1, tx_buf, 0,1); / /第一个继电器吸合/
rašyti (COM1, tx_buf);
skaityti (COM1, rx_buf);
ascii_data_anlys (di, rx_buf, 0);ascii_set_coil (1, tx_buf, 0,0); / /第一个继电器释放/
rašyti (COM1, tx_buf);
skaityti (COM1, rx_buf);
ascii_data_anlys (di, rx_buf, 0) * /
# define READ_COIL 01
# define READ_DI 02
# define READ_HLD_REG 03
# define READ_AI 04
# define SET_COIL 05
# define SET_HLD_REG 06
# define READ_FIFO 24
# define PROTOCOL_EXCEPTION 0x81
# define PROTOCOL_ERR 1
# define FRM_ERR 2
/ / unsigned char tx_buf [256], rx_buf [256];const unsigned char auchCRCHi [] = (
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 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, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 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, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,
0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 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, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01,
0xC0, 0x80, 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, 0x00, 0xC1, 0x81,
0x40, 0x01, 0xC0, 0x80, 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, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
0x40
);const unsigned char auchCRCLo [] = (
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,
0x11, 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, 0xFA, 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
);const unsigned char char_tab [128] =
(0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,1,2,3,4,5,6,7,8,9,0,0,0,0,0,0,
0,0 x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0 x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
);
const unsigned char tab_char [16] =
('0 ', '1', '2 ', '3', '4 ', '5', '6 ', '7', '8 ', '9', '', 'B', ' C "," D "," E "," F ");parašo trumpą CRC (unsigned char * puchMsg, parašo trumpą usDataLen)
(
unsigned char uchCRCHi = 0xFF; / * High baitas CRC inicializuoti * /
unsigned char uchCRCLo = 0xFF; / * mažas baitas CRC inicializuoti * /
unsigned uIndex; / * bus rodyklė į Konvencijoje lookup table * /
while (usDataLen -) / * pro pranešimą buferis * /
(uIndex = uchCRCHi ^ * puchMsg ; / * apskaičiuoti CRC * /
uchCRCHi = uchCRCLo ^ auchCRCHi [uIndex];
uchCRCLo = auchCRCLo [uIndex];
)
return (uchCRCHi <<8 | uchCRCLo);
)unsigned char a2toh (unsigned char * str)
(
unsigned char tmp;
tmp = 0;
TMP = char_tab [* str];
str ;
tmp = tmp * 16 char_tab [* str];
return tmp
LC get_bit (unsigned int duomenų LC bit)(
const unsigned int bit_tab [] =
(
0x1, 0x2, 0x4, 0x8, 0x10, 0x20, 0x40, 0x80,
0x100, 0x200, 0x400, 0x800, 0x1000, 0x2000, 0x4000, 0x8000
);if (bitų> 16) return 0;
if (duomenų ir bit_tab [bit]) return 1;
else return 0
tuščia htoa (char * str, unsigned char Num)(
unsigned char tmp;
TMP = num;
tmp = tmp &0xf0;
tmp>> = 4;
* str = tab_char [tmp];
str ;
* str = tab_char [NUM & 0x0f]
LC asctortu (unsigned char * dest, unsigned char * source)(
unsigned char * tmp;
unsigned char i;
i = 0;
TMP = dest;
if (* Šaltinis !=':') return 0;
šaltinis ;while (* šaltinis! = 0x0d)
(
* tmp = a2toh (šaltinis);
tmp ;
šaltinis ;
šaltinis ;
i ;
)
šaltinis ;
if (* šaltinis! = 0x0a) return 0;
else (
return i;
)
)
tuščia rtutoascii (unsigned char * dest, unsigned char * source, int ilgio)(
dest ;for (; ilgio> 0; ilgio -)
(
htoa (dest * šaltinį);
dest ;
dest ;
šaltinis
)tuščia rtutoasc (unsigned char * dest, unsigned char * source, int ilgio)(
dest ;for (; ilgio> 0; ilgio -)
(
htoa (dest * šaltinį);
dest ;
dest ;
šaltinis
)unsigned char LRC (unsigned char * str, int ilgio)(
unsigned char tmp;
tmp = 0;
while (ilgio -)
(
tmp = * str
return ((unsigned char )(-(( char) TMP)))tuščia construct_ascii_frm (unsigned char * dst_buf, unsigned char * src_buf, unsigned char ilgio)(
unsigned char lrc_tmp;
lrc_tmp = LRC (src_buf, ilgio);
* (src_buf ilgio) = lrc_tmp;
ilgio ;
* dst_buf =':';
rtutoascii (dst_buf, src_buf, ilgio);
* (2 * dst_buf ilgio) = 0x0d;
* (2 * dst_buf ilgio 1) = 0x0a;
)tuščia construct_rtu_frm (unsigned char * dst_buf, unsigned char * src_buf, unsigned char ilgio)
(
unsigned trumpas crc_tmp;
crc_tmp = CRC (src_buf, ilgio);
* (src_buf ilgio) = crc_tmp>> 8;
* (src_buf ilgio 1) = crc_tmp & 0xFF;
ilgio ; ilgio ;while (ilgio -)
(* dst_buf =* src_buf;
dst_buf ;
src_buf
)
/ *
1读取继电器状态
发送:
*
LC ascii_read_coil_status (unsigned char board_adr, unsigned char * com_buf, int start_address, int ilgio)(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = READ_COIL;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
tmp [4] = lenth/256;
tmp [5] = ilgio &0xff;
tmp_lenth = 6;
construct_ascii_frm (com_buf, tmp, tmp_lenth);
return 17;
)
LC rtu_read_coil_status (unsigned char board_adr, unsigned char * com_buf, int start_address, int ilgio)(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = READ_COIL;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
tmp [4] = lenth/256;
tmp [5] = ilgio &0xff;
tmp_lenth = 6;
construct_rtu_frm (com_buf, tmp, tmp_lenth);
return 8;
)
/ *
2读取开关量输入
发送:
*
LC ascii_read_input_status (unsigned char board_adr, unsigned char * com_buf, int start_address, int ilgio)(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = READ_DI;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
tmp [4] = lenth/256;
tmp [5] = ilgio &0xff;
tmp_lenth = 6;
construct_ascii_frm (com_buf, tmp, tmp_lenth);
return 17;
)
LC rtu_read_input_status (unsigned char board_adr, unsigned char * com_buf, int start_address, int ilgio)(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = READ_DI;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
tmp [4] = lenth/256;
tmp [5] = ilgio &0xff;
tmp_lenth = 6;
construct_rtu_frm (com_buf, tmp, tmp_lenth);
return 8;
)
/ *
3读取保持寄存器
发送:
*
LC ascii_read_hldreg (unsigned char board_adr, unsigned char * com_buf, int start_address, int ilgio)(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = READ_HLD_REG;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
tmp [4] = lenth/256;
tmp [5] = ilgio &0xff;
tmp_lenth = 6;
construct_ascii_frm (com_buf, tmp, tmp_lenth);
return 17;
)LC rtu_read_hldreg (unsigned char board_adr, unsigned char * com_buf, int start_address, int ilgio)(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = READ_HLD_REG;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
tmp [4] = lenth/256;
tmp [5] = ilgio &0xff;
tmp_lenth = 6;
construct_rtu_frm (com_buf, tmp, tmp_lenth);
return 8;
)
/ *
4读取模拟量输入
发送:
*
LC ascii_read_anloginput (unsigned char board_adr, unsigned char * com_buf, int start_address, int ilgio)
(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = READ_AI;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
tmp [4] = lenth/256;
tmp [5] = ilgio &0xff;
tmp_lenth = 6;
construct_ascii_frm (com_buf, tmp, tmp_lenth);
return 17;
)
LC rtu_read_anloginput (unsigned char board_adr, unsigned char * com_buf, int start_address, int ilgio)(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = READ_AI;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
tmp [4] = lenth/256;
tmp [5] = ilgio &0xff;
tmp_lenth = 6;
construct_rtu_frm (com_buf, tmp, tmp_lenth);
return 8;
)
/ *
5设置继电器
发送: status = 0继电器释放否则继电器吸合, adresas为吸合的继电器编号, 0为第一个继电器,依次类推
*
LC ascii_set_coil (unsigned char board_adr, unsigned char * com_buf, int start_address, int statusas)
(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = SET_COIL;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
if (statusas)
(
tmp [4] = 0xFF;
tmp [5] = 0;
)
kitas
(
tmp [4] = 0;
tmp [5] = 0;
)tmp_lenth = 6;
construct_ascii_frm (com_buf, tmp, tmp_lenth);
return 17;
)LC rtu_set_coil (unsigned char board_adr, unsigned char * com_buf, int start_address, int statusas)
(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = SET_COIL;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
if (statusas)
(
tmp [4] = 0xFF;
tmp [5] = 0;
)
kitas
(
tmp [4] = 0;
tmp [5] = 0;
)tmp_lenth = 6;
construct_rtu_frm (com_buf, tmp, tmp_lenth);
return 8;
)
/ *
6设置保持寄存器
*
LC ascii_set_hldreg (unsigned char board_adr, unsigned char * com_buf, int start_address, int value)
(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = SET_HLD_REG;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
tmp [4] = value/256;
tmp [5] = vertė &0xff;
tmp_lenth = 6;
construct_ascii_frm (com_buf, tmp, tmp_lenth);
return 17;
)
LC rtu_set_hldreg (unsigned char board_adr, unsigned char * com_buf, int start_address, int value)
(
unsigned char tmp [256], tmp_lenth;
tmp [0] = board_adr;
tmp [1] = SET_HLD_REG;
tmp [2] = start_address/256;
tmp [3] = start_address & 0xFF;
tmp [4] = value/256;
tmp [5] = vertė &0xff;
tmp_lenth = 6;
construct_rtu_frm (com_buf, tmp, tmp_lenth);
return 8;
)
/ *
7
接收分析:
dest_p接收到数据指针
sourc_p串口接收缓冲区指针
data_start_address开始地址
*/ * RTU接收分析* /
LC rtu_data_anlys (int * dest_p, unsigned char * source_p, int data_start_address, int fr_lenth)
(
unsigned trumpas crc_result, crc_tmp;
unsigned char tmp1, tmp2, shift;crc_tmp =* (source_p fr_lenth-2);
crc_tmp = crc_tmp * 256 * (source_p fr_lenth-1);
crc_result = CRC (source_p, fr_lenth-2);if (crc_tmp! = crc_result)
(
hld_reg [0x31] ;
return -1;
)
switch (* (source_p 1))
(
atveju READ_COIL: / *读取继电器状态* /
for (tmp1 = 0; tmp1 <* (source_p 2); tmp1 )
(
perėjimas = 1;
for (tmp2 = 0; tmp2 <8; tmp2 )
(
* (dest_p data_start_address tmp1 * 8 tmp2) = shift & * (source_p 3);
* (Source_p 3)> = 1
)
break;atveju READ_DI: / *读取开关量输入* /
for (tmp1 = 0; tmp1 <* (source_p 2); tmp1 )
(
perėjimas = 1;
for (tmp2 = 0; tmp2 <8; tmp2 )
(* (Dest_p data_start_address tmp1 * 8 tmp2) = shift & * (source_p 3);
* (Source_p 3)> = 1
)
break;atveju READ_HLD_REG: / *读取保持寄存器* /
for (tmp1 = 0; tmp1 <* (source_p 2); tmp1 = 2)
(
* (dest_p data_start_address tmp1 / 2) = * (source_p tmp1 3) * 256 * (source_p tmp1 4)
break;case 4: / *读取模拟量输入* /
for (tmp1 = 0; tmp1 <* (source_p 2); tmp1 = 2)
(
* (dest_p data_start_address tmp1 / 2) = * (source_p tmp1 3) * 256 * (source_p tmp1 4)
break;atveju PROTOCOL_EXCEPTION:
return -1 * PROTOCOL_ERR;
break;default:
return -1 * PROTOCOL_ERR;
break;
)return 0
LC ascii_data_anlys (int * dest_p, char * source_p, int data_start_address)(
unsigned char tmp [256];
LC ilgio;
LC tmp1, tmp2;
char pamainą;ilgio = asctortu (TMP, source_p);
if (ilgio == 0) return -1 * FRM_ERR;
switch (TVP) [1]
(
atveju READ_COIL: / *读取继电器状态* /
for (tmp1 = 0; tmp1 <tmp [2]; tmp1 )
(
perėjimas = 1;
for (tmp2 = 0; tmp2 <8; tmp2 )
(* (Dest_p data_start_address tmp1 * 8 tmp2) = shift & tmp [tmp1 3];tmp [tmp1 3]>> = 1;
)
)
break;atveju READ_DI: / *读取开关量输入* /
for (tmp1 = 0; tmp1 <tmp [2]; tmp1 )
(
perėjimas = 1;
for (tmp2 = 0; tmp2 <8; tmp2 )
(* (Dest_p data_start_address tmp1 * 8 tmp2) = shift & tmp [tmp1 3];
tmp [tmp1 3]>> = 1;
)
)
break;atveju READ_HLD_REG: / *读取保持寄存器* /
for (tmp1 = 0; tmp1 <tmp [2]; tmp1 = 2)
(
* (dest_p data_start_address tmp1 / 2) = tmp [tmp1 3] * 256 tmp [tmp1 4]
break;case 4: / *读取模拟量输入* /
for (tmp1 = 0; tmp1 <tmp [2]; tmp1 = 2)
(
* (dest_p data_start_address tmp1 / 2) = tmp [tmp1 3] * 256 tmp [tmp1 4]
break;atveju PROTOCOL_EXCEPTION:
return -1 * PROTOCOL_ERR;
break;default:
break;
)return 0
/ *主程序按照一定的顺序调用1 ~ 6子程序,然后把生成的缓存内容写入串口.
接收到数据送给7的子程序分析即可.
ASCII方式下,用0X0D, 0x0a作为帧结束判断的依据
RTU方式下,以两个字节间的时间间隔大于3,5倍的一个字符周期为帧结束判断依据
Read () write ()是两个假想存在的函数
*/ * void main (void)
(
ascii_read_coil_status (1, tx_buf, 0,8);
rašyti (COM1, tx_buf);
skaityti (COM1, rx_buf);
ascii_data_anlys (ritė, rx_buf, 0);ascii_read_input_status (1, tx_buf, 0,8);
rašyti (COM1, tx_buf);
skaityti (COM1, rx_buf);
ascii_data_anlys (di, rx_buf, 0);ascii_read_hldreg (1, tx_buf, 0,8);
rašyti (COM1, tx_buf);
skaityti (COM1, rx_buf);
ascii_data_anlys (hld_reg, rx_buf, 0);ascii_read_anloginput (1, tx_buf, 0,8);
rašyti (COM1, tx_buf);
skaityti (COM1, rx_buf);
ascii_data_anlys (ai, rx_buf, 0);ascii_set_coil (1, tx_buf, 0,1); / /第一个继电器吸合/
rašyti (COM1, tx_buf);
skaityti (COM1, rx_buf);
ascii_data_anlys (di, rx_buf, 0);ascii_set_coil (1, tx_buf, 0,0); / /第一个继电器释放/
rašyti (COM1, tx_buf);
skaityti (COM1, rx_buf);
ascii_data_anlys (di, rx_buf, 0)
* /
C
chrisatwan
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tai industerial communnication Protokolo dėl PLC, I / Os ...
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Martin
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