Delta Electronics AC Motor Drive VFD-VE Series Especificaciones descargar pdf (Pagina 98)

VFD-V Series

5-70

unsigned int crc_chk(unsigned char* data, unsigned char length)

{

int j;

unsigned int reg_crc=0Xffff;

while(length--){

reg_crc ^= *data++;

for(j=0;j<8;j++){

if(reg_crc & 0x01){ /* LSB(b0)=1 */

reg_crc=(reg_crc>>1) ^ 0Xa001;

}else{

reg_crc=reg_crc >>1;

}

return reg_crc; // the value that sent back to the CRC register finally

}

4. Definition of the Parameters Addresses of the Communication Protocol:

Definition Parameter Address Function

Parameter setting

within the drive

GGnnH GG suggests the parameter group whereas nn

suggests the parameter code. For example,

Pr. 04-01 is indicated as 0401H.

Command toward

the drive

2000H Bit0~3 0: no function

1: STOP

2: RUN

3: JOG + RUN

Bit4~5 00B: no function

01B: FWD

10B: REV

11B: direction change

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Delta Electronics AC Motor Drive VFD-VE Series Especificaciones Pagina 98