Delta Electronics AC Motor Drive VFD-E - Manual (Page 176)

Chapter 4 Parameters|
Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11 4-123
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;
}
3.5 Address list
The contents of available addresses are shown as below:
Content Address Function
AC drive
Parameters GGnnH
GG means parameter group, nn means parameter number,
for example, the address of Pr 04.01 is 0401H. Refer to
chapter 5 for the function of each parameter. When reading
parameter by command code 03H, only one parameter can
be read at one time.
Bit 0-1
00B: No function
01B: Stop
10B: Run
11B: Jog + Run
Bit 2-3 Reserved
Bit 4-5
00B: No function
01B: FWD
10B: REV
11B: Change direction
Bit 6-7
00B: Comm. forced 1st accel/decel
01B: Comm. forced 2nd accel/decel
Command
Write only
2000H
Bit 8-15 Reserved