GS1 EPC Tag Data Standard 1.6 - Indicod-Ecr

137913801381138213831384138513861387138813891390139113921393139413951396139713981399140014011402140314041405140614071408140914101411141214131414141514161417EPC URI: urn:epc:id:grai:d 1 d 2 …d L .d (L+1) d (L+2) …d 12 .s 1 s 2 …s KGS1 Element String: (8003)0d 1 d 2 …d 13 s 1 s 2 …s KTo find the GS1 element string corresponding to a GRAI EPC URI:1. Number the digits of the first two components of the EPC as shown above. Note thatthere will always be a total of 12 digits.2. Number the characters of the serial number (third) component of the EPC as shownabove. Each s i corresponds to either a single character or to a percent-escape tripletconsisting of a % character followed by two hexadecimal digit characters.3. Calculate the check digit d 13 = (10 – ((3(d 2 + d 4 + d 6 + d 8 + d 10 + d 12 ) + (d 1 + d 3 + d 5 +d 7 + d 9 + d 11 )) mod 10)) mod 10.4. Arrange the resulting digits and characters as shown for the GS1 Element String. Ifany s i in the EPC URI is a percent-escape triplet %xx, in the GS1 Element Stringreplace the triplet with the corresponding character according to Table 47 (AppendixA). (For a given percent-escape triplet %xx, find the row of Table 47 that containsxx in the “Hex Value” column; the “Graphic Symbol” column then gives thecorresponding character to use in the GS1 Element String.).To find the EPC URI corresponding to a GS1 element string that includes a GRAI(AI 8003):1. If the number of characters following the (8003) application identifier is less thanor equal to 14, stop: this element string does not have a corresponding EPC becauseit does not include the optional serial number.2. Number the digits and characters of the GS1 element string as shown above.3. Determine the number of digits L in the GS1 Company Prefix. This may be done, forexample, by reference to an external table of company prefixes.4. Arrange the digits as shown for the EPC URI. Note that the GRAI check digit d 13 isnot included in the EPC URI. For each serial number character s i , replace it with thecorresponding value in the “URI Form” column of Table 47 (Appendix A) – eitherthe character itself or a percent-escape triplet if s i is not a legal URI character.Example:EPC URI: urn:epc:id:grai:0614141.12345.32a%2FbGS1 element string: (8003) 0 0614141 12345 2 32a/bSpaces have been added to the GS1 element string for clarity, but they are never encoded.In this example, the slash (/) character in the serial number must be represented as anescape triplet in the EPC URI.7.5 Global Individual Asset Identifier (GIAI)The GIAI EPC (Section 6.3.5) corresponds directly to the GIAI key defined in Sections2.3.2 and 3.9.4 of the GS1 General Specifications [GS1GS10.0].The correspondence between the GIAI EPC URI and a GS1 element string consisting of aGIAI key (AI 8004) is depicted graphically below:Copyright ©2005- 2011 GS1 AISBL, All Rights Reserved. Page 47 of 218