– 2 – 62055-51 © IEC:2007(E)
CONTENTS
FOREWORD...........................................................................................................................3
INTRODUCTION.....................................................................................................................5
1
Scope...............................................................................................................................6
2 Normative references .......................................................................................................6
3 Terms, definitions and abbreviations ................................................................................7
3.1 Terms and definitions ..............................................................................................7
3.2 Abbreviations ..........................................................................................................7
3.3 Notation and terminology.........................................................................................8
3.4 Numbering conventions ...........................................................................................8
4 STS protocol reference model ..........................................................................................9
5 POSToTokenCarrierInterface: Physical layer protocol ....................................................10
5.1 TCDU ....................................................................................................................10
5.2 Magnetic card token carrier ...................................................................................11
5.3 Numeric token carrier ............................................................................................15
6 TokenCarrierToMeterInterface: Physical layer protocol................................................... 17
6.1 TCDU ....................................................................................................................17
6.2 Magnetic card token carrier ...................................................................................17
6.3 Numeric token carrier ............................................................................................18
Annex A (informative) Procurement options for users of STS-compliant systems .................
20
Bibliography..........................................................................................................................
21
Table 1 – Data elements in the TCDU ...................................................................................
10
Table 2 – Data elements in the IDRecord..............................................................................10
Table 3 – Mandatory data fields for Record1 to be encoded on Track 3 ................................13
Table 4 – Separator data field to be encoded on Track 3 with optional Record2.................... 13
Table 5 – Data fields for optional Record2 to be encoded on Track 3....................................13
Table 6 – Example of 66-bit binary to 20-digit decimal conversion ........................................16
Table 7 – Data elements in the TCDU ...................................................................................17
Table 8 – Example of a 20-digit decimal to 66-bit binary conversion .....................................19
Table A.1 – Items that should be noted in purchase orders and tenders................................ 20
Figure 1 – Physical layers of the STS protocol stack...............................................................
9
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