ISO/IEC 16022:2024

International
Standard
ISO/IEC 16022
Third edition
Information technology —
2024-05
Automatic identification and data
capture techniques — Data Matrix
bar code symbology specification
Technologies de l'information — Techniques automatiques
d'identification et de capture des données — Spécification de
symbologie de code à barres Data Matrix
Reference number
© ISO/IEC 2024
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© ISO/IEC 2024 – All rights reserved
ii
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 2
5 Mathematical or logical notations . 2
6 Symbol description. 2
6.1 Basic characteristics .2
6.2 Summary of additional features .3
6.3 Symbol structure .3
6.3.1 General .3
6.3.2 Finder pattern .4
6.3.3 Symbol sizes and capacities .4
7 Data Matrix code requirements. 4
7.1 Encode procedure overview . .4
7.1.1 General .4
7.1.2 Step 1: data encodation .4
7.1.3 Step 2: error checking and correcting codeword generation .4
7.1.4 Step 3: module placement in matrix.5
7.2 Data encodation .5
7.2.1 Overview .5
7.2.2 Default character interpretation .5
7.2.3 ASCII encodation .5
7.2.4 Symbology control characters .6
7.2.5 C40 encodation .7
7.2.6 Text encodation .9
7.2.7 ANSI X12 encodation .9
7.2.8 EDIFACT encodation .10
7.2.9 Base 256 encodation .11
7.3 ECI .11
7.3.1 General .11
7.3.2 Encoding ECIs . . 12
7.3.3 ECIs and Structured Append . 12
7.3.4 Post-decode protocol . 12
7.4 Data Matrix symbol attributes . 13
7.4.1 Symbol sizes and capacity . 13
7.4.2 Insertion of Alignment Patterns into larger symbols .14
7.5 Structured Append .14
7.5.1 Basic principles .14
7.5.2 Symbol sequence indicator .14
7.5.3 File identification . 15
7.5.4 FNC1 and Structured Append . 15
7.5.5 Buffered and unbuffered operation . 15
7.6 Error detection and correction . . 15
7.6.1 Reed-Solomon error correction . 15
7.6.2 Generating the error correction codewords . 15
7.6.3 Error correction capacity .16
7.7 Symbol construction .17
7.7.1 General .17
7.7.2 Symbol character placement .17
7.7.3 Alignment Pattern module placement .17

© ISO/IEC 2024 – All rights reserved
iii
7.7.4 Finder Pattern module placement .18
8 Symbol dimensions .18
9 Symbol quality .18
9.1 General .18
9.2 Symbol quality parameters .18
9.2.1 Fixed pattern damage .18
9.2.2 Overall symbol grade .18
9.2.3 Decode .18
9.2.4 Grid non-uniformity .18
9.3 Process control measurements .19
10 Reference decode algorithm for Data Matrix . 19
11 User guidelines .30
11.1 Human readable interpretation . 30
11.2 Autodiscrimination capability . 30
11.3 System considerations . 30
12 Transmitted data .30
12.1 General .
...