KEYENCE N-400 - Manual (Page 144)

Appendices
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Appendices
Convert the calculated hexadecimal number into an ASCII code in two digits. The
result obtained is the checksum.
Therefore, the checksum for the above example is “cc = 59 (35h 39h).
Example:
• Exclusive OR calculation formula
Calculate the numbers of each bit, referring to the following formula:
0 + 0 = 0
0 + 1 = 1
1 + 0 = 1
1 + 1 = 0
* + : Operator of Exclusive OR
• Conversion from hexadecimal number into binary number
To convert ASCII codes into binary numbers, refer to the following table.
Tips
Hexadecimal number 0 1 2 3 4 5 6 7
Binary number 0000 0001 0010 0011 0100 0101 0110 0111
Hexadecimal number 8 9 A B C D E F
Binary number 1000 1001 1010 1011 1100 1101 1110 1111
Header % P 15 CC – Delimiter ERROR
Header CC Delimiter 1234
Result:
CC=04
CC=04