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Interface 'K' Specification ERTMS/ETCS Interface 'K' Specification REF : SUBSET-101 ISSUE : 2.0.0 DATE : February 24, 2012 Company Technical Approval Management approval ALSTOM ANSALDO BOMBARDIER INVENSYS SIEMENS THALES © This document has been developed and released by UNISIG SUBSET-101 Interface 'K' Specification Page 1/56 Issue 2.0.0 Page 2 of 56 SUBSET-101, Issue 2.0.0 February 24, 2012 MODIFICATION HISTORY Issue Number Section Num- Modification / Description Author Date ber 0.0.1, Initial draft based on meeting discus- B. Sjöbergh 2004-02-16 sions. 0.0.2, Update including Bombardier sug- P. Lundberg 2004-02-25 gestions for improvements. 0.0.3, Update considering conclusions from P. Lundberg 2004-03-19 the fourth WGKI meeting, and Bom- bardier suggestions for improve- ments. 0.0.4, Update considering conclusions from P. Lundberg 2004-05-06 the fifth WGKI meeting, and Bom- bardier suggestions for improve- ments. 0.0.5, Update considering discussions from P. Lundberg 2004-08-09 the seventh WGKI meeting, and Bombardier suggestions for im- provements. 0.0.6, Update considering Bombardier sug- P. Lundberg 2004-10-04 gestions for improvements. 0.0.7, Update considering discussions dur- P. Lundberg 2004-10-19 ing the ninth WGKI meeting. 0.0.8, Update considering discussions dur- P. Lundberg 2004-10-29 ing the tenth WGKI meeting. 0.0.9, Update considering discussions dur- P. Lundberg 2004-12-03 ing the eleventh WGKI meeting. 0.0.10, Update considering discussions dur- P. Lundberg 2005-01-17 ing the twelfth WGKI meeting. 0.0.11, Update considering discussions dur- P. Lundberg 2005-02-17 ing the thirteenth WGKI meeting. 0.0.12, Update considering e-mail discus- P. Lundberg 2005-02-25 sions. 0.1.0, First official draft. P. Lundberg 2005-03-09 0.1.1, Update considering conclusions from P. Lundberg 2005-05-13 the fifteenth and sixteenth WGKI meetings. Page 3 of 56 SUBSET-101, Issue 2.0.0 February 24, 2012 Issue Number Section Num- Modification / Description Author Date ber 0.1.2, Final working draft. P. Lundberg 2005-06-15 0.2.0, Second official draft. P. Lundberg 2005-06-23 0.2.1, 3.1.1, 4.1.1.3.1, Update considering conclusions from P. Lundberg 2005-09-01 4.1.1.3.2 the eighteenth WGKI meeting. 1.0.0, Final update (only change of issue P. Lundberg 2005-10-04 status). 1.0.1, 3.1.2, 3.1.4 Clarifications to CRC generation. P. Lundberg 2006-04-27 1.0.2 3.1.2, 3.1.4, Updated in accordance with CR 1049 P. Lundberg 2012-02-20 3.1.6, 4.1.2.7 and CR 1052. 2.0.0 Baseline 3 release version (only P. Lundberg 2012-02-24 change of Issue number). Page 4 of 56 SUBSET-101, Issue 2.0.0 February 24, 2012 Foreword This document is the specification for the Interface ‘K’ between the ERTMS/ETCS On-board BTM functionality and the KER STM’s. The purpose of Interface ‘K’ is to make it possible to have a common Balise antenna used by ERTMS/ETCS On-board Equipment as well as by one or several KER STM’s. Page 5 of 56 SUBSET-101, Issue 2.0.0 February 24, 2012 Contents 1 GENERAL ______________________________________________________________ 7 1.1 Introduction ________________________________________________________________7 1.2 Scope ______________________________________________________________________8 1.3 Functional Description ________________________________________________________9 1.4 Alternative Interfaces ________________________________________________________9 2 TERMINOLOGY ________________________________________________________ 10 2.1 Abbreviations ______________________________________________________________10 2.2 Acronyms _________________________________________________________________10 2.3 Definitions _________________________________________________________________11 3 PHYSICAL TRANSMISSION _______________________________________________ 13 3.1 Alternative 1 _______________________________________________________________13 3.1.1 Architecture _____________________________________________________________________ 13 3.1.2 Functional Data __________________________________________________________________ 15 3.1.3 Electrical Data ___________________________________________________________________ 18 3.1.4 Data Transmission________________________________________________________________ 18 3.1.5 Timing Requirements _____________________________________________________________ 20 3.1.6 Procedural Requirements __________________________________________________________ 20 3.1.7 Handling of Safety Diversified Data __________________________________________________ 22 3.2 Alternative 2 _______________________________________________________________23 3.2.1 Architecture _____________________________________________________________________ 23 3.2.2 Functional Data __________________________________________________________________ 23 3.2.3 Electrical Data ___________________________________________________________________ 23 3.2.4 Data Transmission________________________________________________________________ 23 3.2.5 Timing Requirements _____________________________________________________________ 24 3.2.6 Procedural Requirements __________________________________________________________ 25 3.2.7 Handling of Safety Diversified Data __________________________________________________ 25 4 FUNCTIONAL REQUIREMENTS ____________________________________________ 26 4.1 Alternative 1 _______________________________________________________________26 4.1.1 STM Functionality _______________________________________________________________ 26 4.1.2 ERTMS/ETCS Functionality _______________________________________________________ 35 4.1.3 Odometer Requirements for Side Lobe Handling ________________________________________ 41 4.1.4 Balise Separation _________________________________________________________________ 41 4.1.5 Balise Group Separation ___________________________________________________________ 41 Page 6 of 56 SUBSET-101, Issue 2.0.0 February 24, 2012 4.2 Alternative 2 _______________________________________________________________42 4.2.1 STM Functionality _______________________________________________________________ 42 4.2.2 ERTMS/ETCS Functionality _______________________________________________________ 45 4.2.3 Odometer Requirements for Side Lobe Handling ________________________________________ 48 4.2.4 Balise Separation _________________________________________________________________ 48 4.2.5 Balise Group Separation ___________________________________________________________ 48 5 RAMS REQUIREMENTS _________________________________________________ 49 5.1 Transmission System Aspects _________________________________________________49 5.2 Balise Aspects ______________________________________________________________49 5.3 On-board Transmission Equipment and STM Aspects ____________________________49 5.3.1 General ________________________________________________________________________ 49 5.3.2 Safety Integrity Requirements related to Interface ‘K’ ____________________________________ 50 6 REFERENCES __________________________________________________________ 52 ANNEX A, ON-BOARD TYPE 1 SPECIFICS _______________________________________ 53 A1 GENERAL ___________________________________________________________ 53 A2 SAFETY INTEGRITY REQUIREMENTS _____________________________________ 53 A3 MAXIMUM NUMBER OF CONSECUTIVE ‘ONES ’ ______________________________ 53 ANNEX B, ON-BOARD TYPE 2 SPECIFICS _______________________________________ 54 B1 GENERAL ___________________________________________________________ 54 B2 SAFETY INTEGRITY REQUIREMENTS _____________________________________ 54 B3 MAXIMUM NUMBER OF CONSECUTIVE ‘ONES ’ ______________________________ 54 ANNEX C, ON-BOARD TYPE 3 SPECIFICS _______________________________________ 55 C1 GENERAL ___________________________________________________________ 55 C2 SAFETY INTEGRITY REQUIREMENTS _____________________________________ 55 C3 MAXIMUM NUMBER OF CONSECUTIVE ‘ONES ’ ______________________________ 55 ANNEX D, ON-BOARD TYPE 4 SPECIFICS _______________________________________ 56 D1 GENERAL ___________________________________________________________ 56 D2 SAFETY INTEGRITY REQUIREMENTS _____________________________________ 56 D3 MAXIMUM NUMBER OF CONSECUTIVE ‘ONES ’ ______________________________ 56 Page 7 of 56 SUBSET-101, Issue 2.0.0 February 24, 2012 1 General 1.1 Introduction This document defines an interface between the ERTMS/ETCS On-board BTM function and the KER STM’s in order to allow for a common Balise antenna to be used by ERTMS/ETCS On-board Equip- ment as well as by one or several KER STM’s. This interface is called Interface ‘K’. The Eurobalise Transmission System is a safe spot transmission based system conveying safety related information between the wayside infrastructure and the train, and vice-versa. Several countries use an older generation of Balises, as a group known as KER Balises. These are similar enough to make it pos- sible to read both Eurobalises and KER Balises with the same On-board BTM function and antenna unit if the BTM function and antenna are properly adapted. The combination of the antenna and the BTM function is hereafter denominated “On-board Transmission Equipment”. The overall architecture of the ERTMS/ETCS On-board Constituent and the KER STM’s regarding the Interface ‘G’ and the Interface ‘K’ is shown in Figure 1. Profibus carrying STM FFFIS ERTMS/ETCS ERTMS/ETCS On-board Kernel Constituent ‘K’ KER BTM function On-board STM Transmission Equipment Antenna Unit ‘A’ ‘G’ Eurobalise KER Balise ‘C’ Wayside LEU Encoder Signalling Equipment ‘S’ From / to Wayside Signaling or Interlocking Figure 1:
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