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1、BRITISH STANDARD BS EN 796:1996 Bar coding Symbology identifiers The European Standard EN 796:1995 has the status of a British Standard ICS 35.00 Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 03:49:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 796:1996 This British Standard, having be
2、en prepared under the direction of the Information Systems Technology Assembly, was published under the authority of the Standards Board and comes into effect on 15 April 1996 BSI 08-1999 The following BSI references relate to the work on this standard: Committee reference IST/34 Draft for comment 9
3、2/66840 DC ISBN 0 580 25374 0 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee IST/34, Bar coding, upon which the following bodies were represented: Article Number Association (UK) Ltd. Association of British Health-care I
4、ndustries Association of the British Pharmaceutical Industry Auto ID User Association Automatic Identification Manufacturers Association (Aim UK) Brewers Society British Iron and Steel Producers Association British Office Systems and Stationery Federation CCTA (the Government Centre for Information
5、Systems) Engineering Employers Federation Flexible Packaging Association Food and Drink Federation Kings Town Photocodes Ltd. Kodak Limited Ministry of Defence National Association of Paper Merchants Process and Packaging Machinery Association Society of Motor Manufacturers and Traders Limited Amend
6、ments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 03:49:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 796:1996 BSI 08-1999i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Text of EN 7965 Licensed Cop
7、y: sheffieldun sheffieldun, na, Tue Nov 07 03:49:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 796:1996 ii BSI 08-1999 National foreword This British Standard has been prepared by Technical Committee IST/34 and is the English language version of EN 796:1995, Bar coding Symbology identifiers, p
8、ublished by the European Committee for Standardization (CEN). This British Standard is published under the direction of the Information Systems Technology Assembly whose Technical Committee IST/34 has the responsibility to: aid enquirers to understand the text; present to the responsible European co
9、mmittee any enquiries on interpretation, or proposals for change, and keep UK interest informed; monitor related international and European developments and promulgate them in the UK. NOTEInternational and European Standards, as well as overseas standards, are available from Customer Services, BSI,
10、389 Chiswick High Road, London, W4 4AL. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. S
11、ummary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 8, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment
12、table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 03:49:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 796 August 1995 ICS 35.040 Descriptors: Data processing, character recognition, optical recognition, graphi
13、c characters, alphanumeric character sets, bar codes, symbols, designation English version Bar coding Symbology identifiers Codes barres Identifiants de symbologiesStrichodierung Symbologie Identifikatoren This European Standard was approved by CEN on 1995-06-22. CEN members are bound to comply with
14、 the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretaria
15、t or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official v
16、ersions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normal
17、isation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1995 All rights of reproduction and communication in any form and by any means reserved in all countries to CEN and its members Ref. No. EN 796:1995 E Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 0
18、7 03:49:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 796:1995 BSI 08-1999 2 Foreword This European Standard was prepared by the Technical Committee CEN/TC 225, Bar coding, of which the secretariat is held by NNI. Organizations contributing to the development of the standard include: AIM Europe (
19、Automatic Identification Manufacturers) NOTENot all of the symbologies which appear in this document are defined in European Standards; for information on current European Standards contact the CEN Central Secretariat or National Standards Organizations. This European Standard shall be given the sta
20、tus of a National Standard, either by publication of an identical text or by endorsement, at the latest by February 1996, and conflicting national standards shall be withdrawn at the latest by February 1996. According to the CEN/CENELEC Internal Regulations, the following countries are bound to impl
21、ement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword2 Introduction5 1Scope5 2Normative references5 3Definitions5 3.1code
22、 character5 3.2flag character5 3.3modifier character5 4Requirements5 4.1Structure5 4.2Code characters5 4.3Modifier characters5 4.3.1“Code 39” A6 4.3.2“Telepen Code” B6 4.3.3“Code 128” C6 4.3.4“Code One” D7 4.3.5“EAN/UPC” E7 4.3.6“Codabar” F7 4.3.7“Code 93” G7 4.3.8“Code 11” H7 4.3.9“Interleaved 2 of
23、 5” I7 4.3.10 “Code 16K” K7 4.3.11 “PDF 417” L8 4.3.12 “MSI” M8 4.3.13 “Anker Code” N8 4.3.14 “Codablock” O8 4.3.15 “Plessey Code” P8 4.3.16 “Straight 2 of 5” (with two bar start/stop codes) R8 4.3.17 “Straight 2 of 5” (with three bar start/stop codes) S8 4.3.18 “Code 49” T8 4.3.19 Other bar code X8
24、 4.3.20 Non-bar code Z8 Annex A (informative) RegistrationInside back cover Table 1 Code characters6 Table 2 Values of m for “Code 39”6 Table 3 Values of m for “Telepen Code”6 Table 4 Values of m for “Code 128”6 Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 03:49:58 GMT+00:00 2006, Uncontro
25、lled Copy, (c) BSI EN 796:1995 BSI 08-19993 Page Table 5 Values of m for “Code One”7 Table 6 Values of m for “EAN/UPC”7 Table 7 Values of m for “Codabar”7 Table 8 Values of m for “Code 93”7 Table 9 Values of m for “Code 11”7 Table 10 Values of m for “Interleaved 2 of 5”7 Table 11 Values of m for “Co
26、de 16K”7 Table 12 Values of m for PDF 4178 Table 13 Values of m for MSI8 Table 14 Values of m for Anker Code8 Table 15 Values of m for “Codablock”8 Table 16 Values of m for “Plessey Code”8 Table 17 Values of m for Straight 2 of 5 (with two bar start/stop codes)8 Table 18 Values of m for “Straight 2
27、of 5” (with three bar start/stop codes)8 Table 19 Values of m for “Code 49”8 Table 20 Values of m for other bar code8 Table 21 Values of m for non-bar code8 Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 03:49:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: sheffieldun s
28、heffieldun, na, Tue Nov 07 03:49:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 796:1995 BSI 08-19995 Introduction A need has arisen to identify the symbology a bar code reader detects in autodiscrimination environments. Prior to this standard there has been no way for a device receiving data from
29、 a bar code reader to differentiate between the symbologies. This standard provides a solution to this problem. The solution is the addition of an optional feature to bar code readers by which the reader may prefix a standard string of characters to data messages. This preamble contains information
30、about the detected symbol and any processing the reader has done. The information is not encoded or otherwise represented in the symbol. This standard should be read in conjunction with the relevant symbology specifications. 1 Scope This standard is applicable to automatic identification device comm
31、unication conventions. This standard specifies the reporting of symbologies from bar code readers and other automatic identification equipment. specifies a short message interpretable by the receiving instrument, which indicates the bar code symbology or other origin of transmitted data, together wi
32、th details of certain specified optional processing features associated with the bar code message. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text
33、and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies.
34、 prEN 1556, Bar Coding Terminology. ISO 646:1991, Information processing ISO 7-bit coded character set for information interchange. 3 Definitions For the purposes of this European Standard the following definitions and those of prEN 1556 apply: 3.1 code character the character indicating to the host
35、 the bar code symbology of the symbol which has been read 3.2 flag character the character (ASCII value 93), indicating to the host that the two characters following are the symbology identifier characters 3.3 modifier character the character indicating to the host the mode in which the symbology is
36、 used 4 Requirements The symbology identifier shall be a three character string prefixed by the reading equipment to the data contained in a bar code symbol. 4.1 Structure The structure of the symbology identifier string shall be as follows: cm The sign “” is the character assigned to ASCII value 93
37、 in the United States ASCII character set in accordance with ISO 646. In applications where the symbology identifier may be transmitted by the decoder and there is a possibility of ASCII character 93 occurring in the data, the application standard shall provide that it shall not occur in the first d
38、ata position and the application software in the receiving system shall verify the context in which it appears in order to determine whether it is the symbology identifier flag character or a data character. 4.2 Code characters The currently assigned code characters are listed in Table 1. These code
39、 characters are case sensitive, i.e. a capital “A” is a different code character from a lower case “a”. All code characters not given here are reserved for future use. Maintenance of the list of code characters (and of options under 4.3) shall be in accordance with Annex A of this standard. 4.3 Modi
40、fier characters Some symbologies covered by this standard contain optional features which need to be indicated to the receiving equipment to enable them to be correctly processed. This optional processing is indicated by the modifier character. where: (ASCII value 93 in accordance with ISO 646) is t
41、he symbology identifier flag character; cis the code character as defined in Table 1; mis the modifier character as defined for the symbology in question. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 03:49:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 796:1995 6 BSI 08-1999 Each symbolo
42、gy has a different set of optional features. These are listed in 4.3.1 to 4.3.20. To determine the modifier character for an application, refer to the sub-clause corresponding to the symbology concerned. Listed in this sub-clause may be one or more processing options, each of which has an assigned o
43、ption value. The value of the modifier character is a hexadecimal value corresponding to active processing options, as shown in 4.3.1 to 4.3.20. Where no options are indicated in the sub-clauses, the modifier character to be transmitted is 0. Logically permissible values are shown in each sub-clause
44、. Values which are not included in the modifier values of a sub-clause are reserved for future use. Check character options listed in 4.3.1 to 4.3.20 indicate the basis of calculation of the check character, where a check character algorithm has been defined in the symbology specification or equival
45、ent standard, or has become a de facto standard through widespread general use. Table 1 Code characters 4.3.1 Code 39 A Permissible values of m: 0, 1, 3, 4, 5, 7. Table 2 Values of m for “Code 39” 4.3.2 “Telepen Code” B Permissible values of m: 0, 1, 2, 4. Table 3 Values of m for “Telepen Code” 4.3.
46、3 “Code 128” C Permissible values of m: 0, 1, 2, 4. Table 4 Values of m for “Code 128” A“Code 39” B“Telepen Code” C“Code 128” D“Code One” E“EAN/UPC” F“Codabar” G“Code 93” H“Code 11” I“Interleaved 2 of 5” K“Code 16K” L“PDF 417” M“MSI” N“Anker Code” O“Codablock” P“Plessey Code” R“Straight 2 of 5” (wit
47、h two bar start/stop codes) S“Straight 2 of 5” (with three bar start/stop codes) T“Code 49” XOther bar code ZNon-bar code Value of mOption 0No check character validation nor full ASCII processing; all data transmitted as decoded 1Modulo 43 check character validated and transmitted 3Modulo 43 check c
48、haracter validated but not transmitted 4Full ASCII character conversion performed; no check character validation 5Full ASCII character conversion performed; modulo 43 check character validated and transmitted 7Full ASCII character conversion performed; modulo 43 check character validated but not tra
49、nsmitted Value of mOption 0Full ASCII mode 1Double density numeric only mode 2Double density numeric followed by full ASCII 4Full ASCII followed by double density numeric Value of mOption 0Standard data packet. No function code 1 in first or second symbol character position after start character 1EAN/UCC-128 data packet function code 1 in first symbol character position after start character 2Function code 1 in second symbol character position after start char