Block Check Character (BCC)

[mol]

Send manual in English if you have

[edk]

Hi Roberto, I found a BCC explanation on the Polish forum:
BCC= The low part of the binary sum of all bytes.
That would explain why only a part of the BCC sum agrees with the according manual.

Code: Select all

Result: '0554' 
The Hight part is '05'
The Low part is: '54'

Simply replacing the first two digits of the result generated by your code and replacing them by '00' I get the 'correct' answers:

You're right.

[Roberto Lopez]

Hi Roberto, I found a BCC explanation on the Polish forum:
BCC= The low part of the binary sum of all bytes.
That would explain why only a part of the BCC sum agrees with the according manual.

Code: Select all

Result: '0554' 
The Hight part is '05'
The Low part is: '54'

Simply replacing the first two digits of the result generated by your code and replacing them by '00' I get the 'correct' answers:

You're right.

Wow!

Now... searching based on your information, I've found this:

Checksum is calculated using 8-bit addition of all bytes in the data structure.Overflows are not taken into account (1 byte).

Very strange indeed

I'll do some tests ASAP.

Many thanks to all for the help!