Infinite L-com SRCN-C711-1, Руководство пользователя

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Data Write Format
ID Function Code Register Address Write Data CRC Check
1 byte 1 byte 2 bytes 2 bytes 2 bytes
1-247 (Decimal) 06 — — Low in front
When the data returned by the module is consistent with the data sent, the relay is unlocked.
Tips: The ID range in the command is in decimal format, please convert it to Hex (hexadecimal) format when using it.
When user do not know the module ID, user can view or modify the ID directly through the function menu F09. User can also check the ID through the
following commands:
ID Function Code Register Address Write Data CRC Check
1 byte 1 byte 2 byte 2 byte 2 byte
FA 03 0x0064 0x0001 D0 5E
This command can only be used in stand alone state.
The returned data is as follows:
ID Function Code Data Length ID CRC Check
1 byte 1 byte 1 byte 2 byte 2 byte
xx 03 2 00 xx Low in front
“xx” is the ID of the module here.
Attachment: CRC check code
Function: CRC check function, generate CRC
Parameter description: arr_buff: array set to be verified
len: the length of the data to be checked
Return parameter: CRC is unsigned int type, High-order byte is high-order first, low-order last.
unsigned int CRC_Compute (unsigned char *arr_buff, unsigned char len)
{
unsigned int crc=0xFFFF; unsigned char i, j;
for ( j=0; j<len; j++)
{
crc=crc ^*a+; for ( i=0; i<8; i++)
{
if( ( crc&0x0001) >0)
{
crc=crc>>1; crc=crc^ 0xa001;
}
else
crc=crc>>1;
}
}
return ( crc);