Worth Data P11/12 user manual Mod 43 Check Character, 1 + 2 + 3 + 33 + 34 + 35 =

Mod 43 Check Character

Standard Code 39 can be printed with a "Mod 43 Check Character". This Mod 43 check character cannot be used with Full Ascii Code 39. The check character is derived by assigning a value to each character in the data to be bar coded from the table as follows:

Char		Value	Char	Value	Char	Value	Char	Value
	0	0	B	11	M	22	X	33
	1	1	C	12	N	23	Y	34
	2	2	D	13	O	24	Z	35
	3	3	E	14	P	25	-	36
	4	4	F	15	Q	26	.	37
	5	5	G	16	R	27	Space	38
	6	6	H	17	S	28	$	39
	7	7	I	18	T	29	/	40
	8	8	J	19	U	30	+	41
9		9	K	20	V	31	%	42
	A	10	L	21	W	32

Here is an example to illustrate how the check character is calculated for bar code data of 123XYZ:

1. Take the sum of the values assigned to each character:

1 + 2 + 3 + 33 + 34 + 35 = 108

1 2 3 X Y Z

2Divide the sum by 43: (thus the name modulus 43)

108/43 = 2 with a Remainder of 22

3. Find the character corresponding with the remainder.

M (value 22) is the CHECK CHARACTER

The data becomes 123XYZM, with M added as the Mod-43 check character.

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