Paxar 9413 I n g C h e c k D i g i t s, 14Defining Field Options, Selector,action,device,modulus

U s i n g C h e c k D i g i t s

Check digits are typically used to ensure that a text or bar code field scans correctly. If you apply Option 31, the printer calculates a check digit. A check digit scheme determines how the printer calculates a check digit. When you define a check digit scheme, you assign a number to identify it. This number is later entered in box R4 when you apply Option 31 to a field. You can use check digits with text or bar code fields. Check digit calculations are performed on numeric data only.

Do not use check digits with price fields. Do not define a check digit scheme for these bar codes, because they have predefined check digits: UPC, EAN, Code 39 (with the MOD43 check digit), and Code 93.

Syntax	{A,selector,action,device,modulus,
	fld_length,D/P,"weights" p }
A1. A	Check Digit Header.
	Assign a number from 1-10to this check digit formula.

A3. action Adds a check digit scheme. Enter A.

A4. device Storage device. Options:

FFlash (9414 only)

NNon-volatile RAM (9412/9413 default)

RRAM (9414 default)

		NOTE: To clear a check digit packet from memory, see
		"Clearing Packets from Memory" in Chapter 3.
A5. modulus		Number from 2-11. The modulus is used to divide the sum of
		products or the sum of digits.
A6.	fld_length	The maximum number of characters the field will contain.
		Range: 0 - 2710.
A7.	D/P	Algorithm. The algorithm determines how the check digit is
		calculated. Options:

Dsum of digits

Psum of products

5-14Defining Field Options