The following illustration displays example images and the minimum sizing for each scenario. For ITF-14 bar code symbols printed on a label, only horizontal bearer bars along the top and bottom are necessary. If the ITF-14 is printed directly on a corrugated carton it must be surrounded by bearer bars. ITF-14 barcode symbols include bearer bars, which are surrounding bars which protect the barcode image. Check Digit Calculator Add all of the digits in the odd positions (digits in position 1, 3, 5, 7, 9, and 11) Multiply by 3. The GTIN-14 data can also be conveyed in other GS1 barcode data carriers, such as a GS1-128 barcode. ITF-14 is a 14 digit bar code that uses the “Interleaved 2 of 5” symbology (I2of5, or ITF). The ITF-14 barcode is the most common data carrier used for the GTIN-14 data structure in retail organizations. GS1 Check Digit Calculator can calculate the last digit of a barcode number, making sure the barcode is correctly composed. This calculator can be used to work out the check digit for your GTINs. Ĭreating a GTIN-14 for a carton containing the same items ITF-14 Barcode Symbol License a GS1 US GTIN for and get a free lifetime subscription to GS1 US Data. It is important to note that the check digit calculation can be. GS1 barcode compliance doesnt have to be as hard as reading. The last digit 5 is the MOD 10 check digit required by the GS1 specifications. Simply enter the ID number and the check digit calculator will calculate the last digit for you. An online check digit calculator is available at. The free calculator will determine the correct check digit for all forms of GTIN identification. The check digit is the last digit of a barcode number. Using a MOD10 check digit algorithm, the calculated check digit prevents substitution errors. This free check digit calculator is provided by Bar Code Graphics. Check Digit – The last digit of GTIN-14 is a calculated check digit. We are the leading provider of GS1 support services in the US and specialize in.For cartons that contain an assortment of items a new product number is assigned. Item Reference– References the same product number used for the item level GTIN (GTIN-8, GTIN-12, GTIN-13) when a carton is made up of the same item.Depending on the number of items a company needs to identify, a GS1 Company Prefix may be 7 to 10 digits in length. GS1 Company Prefix – Vendors must obtain a GS1 Company Prefix directly from GS1 to uniquely identify their company.This one-digit prefix can range from 0 to 8. Indicator – This denotes the level of packaging for a particular carton.The GTIN-14 data structure is comprised of four components: How to calculate a check digit What to do Starting with the right hand digit of the number, add all the alternate digit values Calculation 0 + 8 + 6 + 4 + 2. In most environments, these cartons are not read by point-of-sale scanners and do not carry a UPC barcode symbol.Īn ITF-14 barcode encodes the GTIN-14 information. ean13.SupplementHeight = 0.8F 'Space between barcode and supplement barcode ean13.SupplementSpace = 15 'Orientation, 90, 180, 270 degrees supported' EAN13 image bottom margin size ean13.Orientation = 0 ean13.ImageFormat = .Tiff 'Set EAN13 human readable text style ean13.DisplayText = True ean13.TextFont = New Drawing.Font( "Arial", 10.0F, ) 'Space between barcode and text ean13.TextMargin = 6 ean13.generateBarcodeToImageFile( "C://ean13-vb-net.Logistic shelf and master cartons should be identified with a GTIN-14 identifier. digit multiplied by 3 and even digits multiplied by 1. The algorithm for calculating a check digit is: Reverse the barcode Drop the last digit (calculated check digit) Add the digits together with first, third, fifth, e.t.c. It should be 2 or 5 digits ean13.SupplementCode = "02" 'Supplement bar height vs primary bar height ratio. I am trying to calculate a GS1 check digit and have come up with the following code. 'To enable this, you need to set Barcode Symbology into "EAN13Sup2" or "EANSup5" first. ean13.RightMargin = 0 'EAN13 image top margin size' ean13.TopMargin = 0 'EAN13 image bottom margin size' ean13.BottomMargin = 0 'EAN13 Supplimental data settings. ean13.LeftMargin = 0 'Image right margin size, a 10X is automatically added according to specification. ean13.BarcodeUnit = ean13.DPI = 72 'Set EAN13 image size 'EAN13 bar module width (X dimention) ean13.X = 1 'EAN13 barcode image width (X dimention) ean13.BarCodeWidth = 160 'EAN13 bar module height (Y dimention) ean13.Y = 60 'Image left margin size, a 10X is automatically added according to specification. ean13.ChecksumEnabled = True 'Display checksum in the EAN13 barcode text ean13.Displa圜hecksum = True 'EAN13 unit of measure, Pixel, Cm and Inch supported. Dim ean13 As = New ean13.Symbology = 13Sup2 ean13.CodeToEncode = "131310000013" 'Apply checksum for EAN13 barcode.
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