NCR 74 OFX (7874), User Manual

Page: 196 / 268

5-88 Chapter 5: Programming
Convert UPC–E Tags to EAN–13 Tags
UPC–E tags can be converted directly to EAN–13 tags. This function is only needed if
UPC–A tags are not to be converted to EAN–13 tags. The default is to disable this
function.
•
Enable Converting UPC–E to EAN–13— Program Mode, Hex 4,
Hex 7 , Hex 7 , Save and Reset
•
Disable Converting UPC–E to EAN–13— Program Mode , Hex 4 ,
Hex 7 , Hex 6, Save and Reset
Check Digits on Price Fields
UPC ‐ A and EAN ‐ 13 barcodes which begin with a Number System 2 and contain
either a 4 or 5 digit price or weight value. To increase the security of reading a price or
weight from a bar code symbol, the Check Digit for these special fields is subject to
additional scrutiny and mathematical calculations in addition to the standard check
digit verification performed on every UPC bar code.
The basic principle of the Check Digit calculation is that each digit position in a price
or weight field is assigned a weighing factor. Weighing factors are 2 ‐ , 3, 5+, and 5 ‐ .
Each weighing factor affects the particular calculation for the position concerned. The
detailed calculation and method used for calculating this weighing factor is described
in the GS1 General Specifications, Section 3, of Version 7.1, specifically 3.A.1.2 Check
Digit Calculation for Price/Weight Fields.
The scanner can be programmed to enforce this price check for 4 or 5 digit price tags.
Note:
If the check digit is encoded incorrectly in the barcode, the scanner will NOT
read it. It will be treated as if the bar code does not exist.
Mandatory 4 Digit Price Check
25363
Selection Programming Tag Sequence
Programming Mode, Hex 3, Hex 3, Hex 7, Save and Reset
Disable Programming Mode, Hex 3, Hex 3, Hex 6, Save and Reset
Enable
Setting
Default
Mandatory 5 Digit Price Check
25364
Selection Programming Tag Sequence
Programming Mode, Hex 3, Hex 3, Hex F, Save and Reset
Disable Programming Mode, Hex 3, Hex 3, Hex E, Save and Reset
Enable
Setting
Default