Winsen ZE07-CH2O, Руководство пользователя

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Zhengzhou Winsen Electronics Technology Co., Ltd www.winsentech.com
Tel: 86-371-67169097/67169670 Fax: 86-371-60932988 Email: sales@winsensor.com
Switch to active upload type, commends as follow:
Table 6
0 1 2 3 4 5 6 7 8
Start
Byte
reserved Switch
command
Active
upload
reserved reserved reserved reserved checksum
0xFF 0x01 0x78 0x40 0x00 0x00 0x00 0x00 0x47
To read the concentration value, commends as follow:
Table 7
0 1 2 3 4 5 6 7 8
Start
Byte
reserved command reserved reserved reserved reserved reserved checksum
0xFF 0x01 0x86 0x00 0x00 0x00 0x00 0x00 0x79
To return, commends as follow:
Table 8
0 1 2 3 4 5 6 7 8
Start
Byte
command Concentration
High
byte(ug/m3)
Concentration
Low byte
(ug/m3)
reserv
ed
reserv
ed
Concentration
High byte
(ppb)
Concentration
High byte
(ppb)
Check
sum
0xFF 0x86 0x00 0x2A 0x00 0x00 0x00 0x20 0x30
3 Checksum and calculation
**********************************************************************
* Function Name: ucharFucCheckSum(uchar *i,ucharln)
* Functional description: Sum check
【
Take Not(Byte1+Byte2+…Byte7) +1
】
**********************************************************************/
unsigned char FucCheckSum(unsigned char *i,unsigned char ln)
{
unsigned char j,tempq=0;
i+=1;
for(j=0;j<(ln-2);j++)
{
tempq+=*i;
i++;
}
tempq=(~tempq)+1;
return(tempq);
}