General Measure M02, Руководство пользователя

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M02 Digital Indicator
47
6.2.3.7 Zeroing
Send command:
STX Scale no. Channel No. O CZ CRC CR LF
Correct response:
STX Scale no. Channel No. O CZ O K CRC CR LF
Wrong response:
STX Scale no. Channel No. O CZ E Error code CRC CR LF
For example:
02 30 31 31 4F 43 5A 38 34 0D 0A
Correct response: 02 30 31 31 4F 43 5A 4F 4B 33 38 0D 0A
Wrong response: 02 30 31 31 4F 43 5A 45 35 30 36 0D 0A （ Operation can’t execuate ）
6.2.3.8 CRC computation
All the values in front of the parity bit add together and convert to decimal data,
then convert the last 2 bits to ASCII code (decade in front and the unit at the back).
For example
The following is a frame of data:
0
2
3
0
3
1
3
1
4
F
4
3
5
A
3
8
3
4
0
D
0
A
Add 02 ~ 5A : 180 ( Hex ),convert to decimal data: 384. We can calculate from this