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Re: Block Check Character (BCC)
Posted: Fri Mar 17, 2017 6:28 am
by mol
Send manual in English if you have
Re: Block Check Character (BCC)
Posted: Fri Mar 17, 2017 10:49 am
by 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'
Roberto Lopez wrote: ↑Thu Mar 16, 2017 4:57 pm
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.
Re: Block Check Character (BCC)
Posted: Fri Mar 17, 2017 12:52 pm
by Roberto Lopez
edk wrote: ↑Fri Mar 17, 2017 10:49 am
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'
Roberto Lopez wrote: ↑Thu Mar 16, 2017 4:57 pm
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!