CD Automation CD3000M-2PH Manuel D'utilisation page 37

C.D. Automation Srl
Exclusive logical Sum (XOR) is executed on one character (1 byte) at I
charactor of CR and designated message, and results are set to CR.
After shifting CR by 1 bit to right, A001(Hex) and exclusive logical sum
NO
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CD3000M-2PH de 125A à 700A
START
Setting FFFF (Hex) To CR
Setting 1 to I
Setting 1 to J
Bit at right and of CR is 1?
(XOR) are executed for setting the result in CR
Added 1to J
NO
Eight times of calculation
is completed?
Added 1 to I
Calculation of all charactersis completed?
I>All characters numbers
YES
J>8
YES
YES
END
34
Manuel d'utilisation
CR= CRC error check data (1 word)
I = Digits of calculation characters
in command message
J = Check on the number of times
of CR calculation
NO
CR is shifted by
1 bit to right