Seiko BX-900 owner manual UPC-E conversion rule, Calculating the check character

9. Bar code and enlarged character

UPC-E conversion rule

●NSC, manufacturer’s codes (M1 M2 M3 M4 M5), and product item codes (X1 X2 X3 X4 X5) are input data.

1.

2.

NSC must be 0 or 1.

When the manufacturer’s code data is input, the rule is determined and zero

checking of the product item codes is performed. NZ: Non-zero✽: 0 to 9

UCP-A Type

	M1	M2	M3	M4	M5	X1	X2	X3	X4	X5
Rule 1	✽	✽	✽	✽	NZ	0	0	0	0	5~9
Rule 2	✽	✽	✽	NZ	0	0	0	0	0	✽
Rule 3	✽	✽	3~9	0	0	0	0	0	✽	✽
Rule 4	✽	✽	0~2	0	0	0	0	✽	✽	✽

3. The following table shows print data if the rule shown above is met.

UCP-E Type

Rule 1	M1	M2	M3	M4	M5	X5	(5~9)
Rule 2	M1	M2	M3	M4	X5	'4'
Rule 3	M1	M2	M3	X4	X5	'3'
Rule 4	M1	M2	X3	X4	X5	M3	(0~2)

Calculating the check character

•Modulus 10

a.The data at the odd-numbered position counted from the right are weighed as 3. The sum of the data character values is determined.. (The sum is determined without weighing for Postnet.)

b.The remainder of deviding the value determined in step a by 10 is determined.

c.A character having a character value equal to the remainder of subtracting the value determined in step b from 10 is the check character.

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