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T HR SC 01250 SP Specification Interfaces Between Signalling And Control Systems Version: 1.0 Issued date: 12 June 2015 Important Warning This document is one of a set of standards developed solely and specifically for use on public transport assets which are vested in or owned, managed, controlled, commissioned or funded by the NSW Government, a NSW Government agency or a Transport Agency (as defined in the Asset Standards Authority Charter). It is not suitable for any other purpose. You must not use or adapt it or rely upon it in any way unless you are authorised in writing to do so by a relevant NSW Government agency. If this document forms part of a contract with, or is a condition of approval by a NSW Government agency, use of the document is subject to the terms of the contract or approval. This document may not be current. Current standards are available for download from the Asset Standards Authority website at www.asa.transport.nsw.gov.au. © State of NSW through Transport for NSW

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T HR SC 01250 SP

Specification

Interfaces Between Signalling And Control Systems

Version: 1.0

Issued date: 12 June 2015

Important Warning This document is one of a set of standards developed solely and specifically for use on public transport assets which are vested in or owned, managed, controlled, commissioned or funded by the NSW Government, a NSW Government agency or a Transport Agency (as defined in the Asset Standards Authority Charter). It is not suitable for any other purpose. You must not use or adapt it or rely upon it in any way unless you are authorised in writing to do so by a relevant NSW Government agency. If this document forms part of a contract with, or is a condition of approval by a NSW Government agency, use of the document is subject to the terms of the contract or approval. This document may not be current. Current standards are available for download from the Asset Standards Authority website at www.asa.transport.nsw.gov.au. © State of NSW through Transport for NSW

T HR SC 01250 SP Interfaces Between Signalling And Control Systems

Version: 1.0 Issued date: 12 June 2015

Standard governance

Owner: Lead Signals and Control Systems Engineer, Asset Standards Authority

Authoriser: Chief Engineer Rail, Asset Standards Authority

Approver Director, Asset Standards Authority on behalf of the ASA Configuration Control Board

Document history

Version Summary of Changes

1.0 First issue

For queries regarding this document, please email the ASA at [email protected] or visit www.asa.transport.nsw.gov.au

© State of NSW through Transport for NSW

T HR SC 01250 SP Interfaces Between Signalling And Control Systems

Version: 1.0 Issued date: 12 June 2015

Preface The Asset Standards Authority (ASA) is an independent unit within Transport for NSW (TfNSW)

and is the network design and standards authority for defined NSW transport assets.

The ASA is responsible for developing engineering governance frameworks to support industry

delivery in the assurance of design, safety, integrity, construction, and commissioning of

transport assets for the whole asset life cycle. In order to achieve this, the ASA effectively

discharges obligations as the authority for various technical, process, and planning matters

across the asset life cycle.

The ASA collaborates with industry using stakeholder engagement activities to assist in

achieving its mission. These activities help align the ASA to broader government expectations

of making it clearer, simpler, and more attractive to do business within the NSW transport

industry, allowing the supply chain to deliver safe, efficient, and competent transport services.

The ASA develops, maintains, controls, and publishes a suite of standards and other

documentation for transport assets of TfNSW. Further, the ASA ensures that these standards

are performance-based to create opportunities for innovation and improve access to a broader

competitive supply chain.

This document describes the interface requirements between the signalling system and the

signalling control system.

This document has been developed from the RailCorp specification SPG 1250 Interfaces

between Signalling and Control Systems and has been reviewed and approved by the Asset

Standards Authority.

This ASA specification T HR SC 01250 SP replaces SPG 1250.

© State of NSW through Transport for NSW Page 3 of 26

T HR SC 01250 SP Interfaces Between Signalling And Control Systems

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Table of contents 1. Introduction .............................................................................................................................................. 5

2. Purpose .................................................................................................................................................... 5 2.1. Scope ..................................................................................................................................................... 5 2.2. Application ............................................................................................................................................. 5

3. Reference documents ............................................................................................................................. 5

4. Terms and definitions ............................................................................................................................. 6

5. Overview ................................................................................................................................................... 6

6. Indication and control states .................................................................................................................. 7 6.1. Indications .............................................................................................................................................. 7 6.2. Controls .................................................................................................................................................. 7

7. Hardware interface .................................................................................................................................. 7 7.1. Equipment types .................................................................................................................................... 8 7.2. Telemetry equipment ............................................................................................................................. 8

7.2.1. SCADA 2000 .......................................................................................................................................... 8

7.2.2. Dupline .................................................................................................................................................... 9

7.2.3. IMAC ...................................................................................................................................................... 10

7.2.4. Kingfisher .............................................................................................................................................. 10

7.3. Computer based interlockings ............................................................................................................. 11 7.3.1. SSI ......................................................................................................................................................... 11

7.3.2. Westlock ................................................................................................................................................ 11

7.3.3. Microlok ................................................................................................................................................. 12

7.4. Electrical isolation ................................................................................................................................ 12 7.4.1. Relay based systems .......................................................................................................................... 12

7.4.2. Computer based systems ................................................................................................................... 12

8. Interface properties ............................................................................................................................... 12 8.1. Naming convention .............................................................................................................................. 13 8.2. Combining of inputs ............................................................................................................................. 14

9. Expected indications and controls ...................................................................................................... 14

10. Spare indications or controls ............................................................................................................... 14

11. Allocation of indications and controls ................................................................................................ 15

12. Documentation of interface .................................................................................................................. 15

Appendix A Indications .......................................................................................................................... 16

Appendix B Controls .............................................................................................................................. 25

© State of NSW through Transport for NSW Page 4 of 26

T HR SC 01250 SP Interfaces Between Signalling And Control Systems

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1. Introduction This document has been developed by the ASA based on the RailCorp specification SPG 1250

and has been updated to suit the railway system operated and maintained by TfNSW.

The unit symbols, SI prefixes, and abbreviations shown in this document comply with IEEE

Appendix VII.

2. Purpose This specification describes the interface requirements between the signalling system and the

signalling control system. The requirements detailed in this document do not reduce any

requirements of the signal design principles (ESG 100) or standards.

2.1. Scope For new interlockings this document shall be used as the interface requirements to the

signalling control system. The interlocking design is expected to follow the naming convention

and the meaning of the indications and controls as defined in this document.

For existing interlockings this document is intended to be used as the requirements for the

signalling interface design if it is modified for remote control.

For some installations a separate maintenance system may be provided to capture diagnostic

indications for maintainers. When this is provided, a reduced set of indications may be provided

to the signalling control system. When this occurs, the interface is to be documented as

described in Section 12. Mandatory indications and controls for the signalling control system are

noted in Appendix A and Appendix B respectively.

2.2. Application This document applies to the heavy rail network operated and maintained by TfNSW.

3. Reference documents The following documents are cited in the text. For dated references, only the cited edition

applies. For undated references, the latest edition of the referenced document applies.

International standards

IEEE Appendix VII Recommended Unit Symbols, SI Prefixes, and Abbreviations

Australian standards

Nil

© State of NSW through Transport for NSW Page 5 of 26

T HR SC 01250 SP Interfaces Between Signalling And Control Systems

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Transport for NSW standards

ESG 007 Glossary of Signalling Terms

ESG 100 Signal Design Principles

SDG 001 Standard Signalling Circuits

SPG 1230 Design of Microlok II Interlockings

SPG 0703 Signalling Documentation and Drawings

Legislation

Nil

Other references

SSI 8003 10 SSI Data Preparation Interlocking Railtrack PLC

4. Terms and definitions For signalling related terms and definitions see ESG 007.

The following terms and definitions apply in this document:

Rail Corporation New South Wales (RailCorp) From 1 January 2004 until 30 June 2013,

RailCorp provided metropolitan passenger rail services via CityRail and long distance services

via CountryLink. RailCorp also owned and maintained the metropolitan rail network and

provided access to freight operators in the metropolitan area.

5. Overview Figure 1 shows the interface between the signalling system and the signalling control system.

Figure 1 – Interface overview

In this document ‘the interface’ refers to the interface between the signalling system and

signalling control system unless otherwise specified.

Signalling System (Vital interlocking system –

usually trackside)

Signalling Control System (Non-vital system – usually

centralised)

Interface between signalling system and signalling control system

Communications link

Signaller

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The physical interface usually takes the form of a serial communications link between field

located interlocking equipment, and a remotely located control system.

This document identifies the types of signalling systems and interface equipment that the

signalling control system connects to. It also defines the logic states of the indications and

controls in terms of the electrical interface or protocol.

6. Indication and control states This section defines the states of indications and controls that shall be used by the signalling

control system.

6.1. Indications The signalling control system is required to be able to display each state as ON, OFF or

UNKNOWN.

Where failure of the signalling equipment or components of the signalling equipment or

telemetry equipment cannot be determined entirely from the communications link, equipment

health indications shall be provided. For example if a Microlok field slave fails then the

indications received from the Microlok master will need to be marked as unknown by the control

system. A Slave_OK indication is required to achieve this, see Cardfile OK in Appendix A.

Health indications shall be associated with the indications they affect.

Health indications shall be processed before changes to their affected indication bits by the

control system.

6.2. Controls The signalling control system states of signalling controls shall be:

• Steady OFF

• Steady ON

• Pulse ON – The output is set to ON then OFF

• Pulse OFF – The output is set to OFF then ON

The type of control and the duration of the pulse shall depend on the hardware interface. See

Section 7.

7. Hardware interface This section identifies the connection details for the signalling system and relates the physical

interface to the states of the signalling control system indications and controls.

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7.1. Equipment types The signalling control system interfaces shall include the capability to interface to signalling

systems of the following interlocking types:

• Relay

• Microlok

• SSI and Westlock

The signalling control system interfaces to relay interlocking shall include the following types of

telemetry equipment:

• SCADA 2000

• Dupline

• IMAC

• Kingfisher Telemetry Systems

The signalling control system interfaces to signalling ancillary systems may also include the

types of equipment listed below:

• power supply equipment – rectifiers, switch mode supplies, uninterruptible power supplies

(UPS) including bypass on line, on battery and so on, emergency change over contactors

(ECOs), earth leakage detectors (ELDs), miscellaneous indications – voltage free relay

contacts

• air compressor systems – control PLCs, pressure switches, compressor alarms and

miscellaneous indications – serial data, USB or voltage free contacts

• fire alarms

• data Link switches, routers

• trackside monitoring (for example; dragging gear detection, and so on)

7.2. Telemetry equipment The wiring connections from any telemetry system to the signalling system shall be included in

the signalling design circuits.

7.2.1. SCADA 2000

The SCADA 2000 is a telemetry system, which can be duplicated to improve availability. The

connections to the interlocking are via optoisolator boards.

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Indications

The input circuit may be a single contact, or a logic circuit of a number of contacts.

The signalling control system shall detect indications as:

• ON: when the input circuit is closed and the required voltage is applied to the input terminal

• OFF: when the input circuit is open

• Vital indication optoisolators (VIO) may be used where an intermediate point of a vital

circuit is required as an input, such as for RUZR indications. A circuit including the VIO

then drives an input optoisolator as per conventional inputs.

Indication conditioning

Indication conditioning is set by the signalling control system; there are no hardware interface

requirements for indication conditioning.

Controls

Controls shall have the following effect on outputs:

• Steady ON: current is allowed to flow

• Steady OFF: no current is allowed to flow

For Pulse ON controls the output is set to ON and after one second set to OFF. This conversion

is performed by the SCADA 2000 system. Pulse OFF controls are handled similarly.

Controls are only set ON by the master side. For the Standby side all controls are set OFF. On

a change of mastership there will be an overlap where both sides are master to ensure that the

signalling control outputs do not drop out.

7.2.2. Dupline Dupline is a telemetry system, which can be duplicated to improve availability.

Indications

The input circuit may be a single contact, or a logic circuit of a number of contacts.

Indications shall be detected as:

• ON: when the input circuit is closed and the required voltage is applied to the input terminal

• OFF: when the input circuit is open

Indication conditioning

Dupline has no indication for input module failures. © State of NSW through Transport for NSW Page 9 of 26

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A hard-wired health indication shall be supplied per input module.

This input is wired directly to the indication bus voltage. If there is a failure of the module then all

indications from the module will be set OFF, including the health indication. When this is

detected all other inputs from the module are made UNKNOWN.

Dupline has two failure modes ‘ALL ON’ and ‘ALL OFF’ with only the ‘ALL OFF’ failure mode

being alarmed.

Controls

No control shall be issued using Dupline telemetry systems.

7.2.3. IMAC IMAC is a telemetry system, which can be duplicated to improve availability.

Indications

IMAC input modules use a sense current to determine if the input circuit is closed. For this

reason one circuit or contact cannot be used for duplicated inputs. Two contacts or duplicated

input circuits are to be used for duplicated system. The input circuit may be a single contact, or

a logic circuit of a number of contacts.

Indications shall be detected as:

• ON: when the input circuit is closed

• OFF: when the input circuit is open

IMAC input modules can be configured to invert the logic sense of the inputs using DIP

switches. This feature is not used.

Controls

No control shall be issued using IMAC telemetry systems.

7.2.4. Kingfisher

Kingfisher is a telemetry system that which can be duplicated to improve reliability.

Indications

The input circuit may be a single contact, or a logic circuit of a number of contacts.

Indications shall be detected as:

• ON: when the input circuit is closed and the required voltage is applied to the input terminal

• OFF: when the input circuit is open © State of NSW through Transport for NSW Page 10 of 26

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Controls

Use of controls through Kingfisher is permissible in accordance with Section 7.2.1 above;

however, receipt on both sides may be required for the application.

7.3. Computer based interlockings Computer based interlockings are described below.

7.3.1. SSI The signalling control system shall interface to SSIs via a serial communications link using the

BR1631 and BR1922 protocols.

The connection point shall be the RS422 ports provided by the Panel Processor Modules

(PPM). Each SSI cubicle has two PPMs with one RS422 port per PPM for the interface.

Indications

Indications are received via the protocol. The indication values shall be:

• ON: SSI value of TRUE which is indicated by a ‘1’ in the protocol message

• OFF: SSI value of FALSE which is indicated by a ‘0’ in the protocol message

Controls

Requests shall only be sent by the master signalling control system side. On a change of

mastership there will be an overlap where both sides are master.

Control values sent via the protocol are set to:

• ON: SSI value of TRUE which is indicated by a ‘1’ in the protocol message

• OFF: SSI value of FALSE which is indicated by a ‘0’ in the protocol message

7.3.2. Westlock The signalling control system shall interface to Westlock interlockings via a serial

communications link using the RT/E/S/17503 protocol.

The connection point shall be the RS422 ports provided by the control system gateways (CSG).

Each Westlock system has two CSGs. Each CSG can have multiple addresses with one RS422

port per address on each CSG.

The RT/E/S/17503 protocol is identical to the SSI BR1631 protocol. See Section 7.3.1 for

definitions of Indications and Controls.

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7.3.3. Microlok

The signalling control system shall interface to Microlok interlockings via serial communications

links using the Genisys protocol. Two Genisys links shall be provided.

Indications

The values of the indications received via the protocol shall be:

• ON: Microlok value of TRUE which is indicated by a ‘1’ in the protocol message

• OFF: Microlok value of FALSE which is indicated by a ‘0’ in the protocol message

Controls

Controls values sent via the protocol are set to:

• ON: Microlok value of TRUE via a ‘1’ in the protocol message

• OFF: Microlok value of FALSE via a ‘0’ in the protocol message

Where Microlok requires controls to be pulsed ON or OFF, the duration shall be configurable in

the signalling control system. The duration will typically be set to one second but shall not be

greater than two seconds.

Controls shall be sent from both the master and the standby signalling control system side.

7.4. Electrical isolation Signalling interlocking equipment shall be electrically isolated from control system equipment or

communication equipment. This is to avoid lowering the electrical integrity of signalling systems

and avoid the transference of electrical surge between systems.

7.4.1. Relay based systems All wiring connected to vital circuits shall conform to railway signalling standards for vital wiring.

Equipment connected to such wiring is subject to type approval to ensure adequate isolation is

provided between the vital and non-vital elements of the system.

7.4.2. Computer based systems All connections between vital computer systems and communication equipment, or control

equipment shall be isolated.

8. Interface properties This section describes the properties of indications and controls.

© State of NSW through Transport for NSW Page 12 of 26

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8.1. Naming convention The signalling control system I/O naming convention for existing interlockings shall be as per

the function names used in the circuit book or data, with the addition of an interlocking

abbreviation prefix to achieve unique names. The interlocking abbreviation shall be a unique

two letter abbreviation of the interlocking name.

The interlocking abbreviation is not required in the interlocking data. The function names shall

omit all characters that are added to identify repeats. See Standard Signalling Circuits

SDG 001, sheet Z03.

Where multiple copies of the same function are provided to the signalling control systems (for

example; at system interfaces), a suffix of ‘–n’ shall be added where n is the copy number

starting from one. The suffix for the first copy of the function may be omitted; subsequent copies

shall be numbered starting from two.

The naming conventions for SSIs shall be as per the SSI source files. The naming convention is

defined in SSI 8003 10.

For new works the naming convention shall be as defined by this document. The naming

convention of this document follows that of signalling documentation and drawings SPG 0703,

Appendix B, and signalling circuit design standards Standard Signalling Circuits SDG 001,

sheet Z01 and sheet Z02.

In general the indication names may exclude the ‘R’ for relay at the end of the function name.

The ‘R’ shall be omitted where it is commonly omitted in usage such as track circuit indications,

as is done in Microlok data. The naming convention for equipment that is not included in the

above documents shall follow the name used in the signalling circuits or computer based

interlockings data or is a descriptive word in brackets.

For Microlok interlockings the bit names of the Microlok data are often prefixed with their

communications port number, see SPG 1230, section 4.5.3. Where this is the case, the

communications port prefix shall be removed from the name used by the signalling control

system.

The IO names may contain alphanumeric characters (case sensitive) as well as the four

characters ‘- _ ( )’. IO names shall not contain any space characters. The asterisk ‘*’ is reserved

for use by intermediate terms within the signalling control system. The terms ‘TRUE’ and

‘FALSE’ are also reserved.

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8.2. Combining of inputs Inputs shall be provided for each indication separately except where combining of inputs is

required to provide the single required function such as:

• route availability indications

• certain alarm indications as may be agreed on a project basis

9. Expected indications and controls This section identifies the expected indication and control connections that shall be provided by

the signalling system to the signalling control system.

In the table the indications specified for relay and Microlok interfaces are expressed in terms of

relay contacts. For Microlok interfaces ‘contact’ shall mean the functional equivalent.

For SSI the table lists the indications that are required as well as the latches that need to be

provided.

This table represents the usual application. Some installations may vary in the logic required to

provide the function.

For example, some signals may clear without train stop drive.

The Lead Engineer Signals and Control Systems may clarify specific situations upon request.

Where separate diagnostic systems are provided, those indications that are mandatory for the

signalling control system are noted. These may also be provided to the diagnostic system.

The indication listings are shown in Table 1 in Appendix A. The control listings are shown in

Table 2 in Appendix B.

10. Spare indications or controls Controls and indications shall be logically (numerically) arranged in order on the serial links. The

preference is for any new or altered spare indications or controls to be added to the end of any

listing rather than to readjust the predefined order in the bit stream. When the bit listing is

established minor modifications may have the spares at the end utilised for additional bits.

To facilitate the addition of extra bits, the listing shall include the initial allocation of an additional

15% to 20% bits nominated as spare over and above the required bit listing. Typically the

additional spare bits may fill out the capacity of the addressing arrangements.

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11. Allocation of indications and controls All indications and controls related to an item of signalling equipment shall be allocated in one

telemetry system. For example all the IO for a signal including all indications and controls as

well as associated ‘A’ track indication for all routes from the signal shall be allocated to one

telemetry system.

Indications shall be geographically contiguous in one telemetry system, that is; if the signal and

‘A’ track are indicated from system 1 and the ‘B’ track is indicated from the next telemetry (2)

then subsequent track ‘C’, track ‘D’, and so on, shall be indicated from system 2.

12. Documentation of interface For any project implementation, the signal designer shall produce a detailed bit list for the

interface for agreement by the control system designer. When this is agreed, any changes to

the list shall require the agreement of both parties.

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Appendix A Indications Table 1 - Indications

Equipment Indication name

Mandatory requirement for signalling control system

Interface types

Relay / Microlok SSI / Westlock

Air system Starting of the lag compressor No AIR_LAG_KR Nil

Compressor failure No AIR_FW_KR Nil

Dryer failure (if provided separate from compressor)

No AIR_DF_KR Nil

Activation of any low pressure Mandatory AIR_LP_KR Nil

Activation of any high pressure No AIR_HHH_KR Nil

Loss of either power supply either partially (for example: loss of phase) or completely

No AIR_PSN_KR

AIR_PSE_KR

Nil

Activation of low pressure No AIR_LLL_KR Nil

Failure of both compressors Mandatory AIR_F_KR Nil

Loss of both power supplies Mandatory AIR_PSR_KR Nil

ac power supply Normal available Mandatory Front contact of _NORM LnameNORM

Emergency available Mandatory Front contact of _EMERG LnameEMERG

Load available Mandatory Front contact _PSR LnamePSR

ATS 1 Auto selected No ATS_ON_AUTO Nil

ATS 1 Normal supply available and on line No ATS_NOR Nil

ATS 1 Emergency supply available No ATS_EMERG Nil

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Equipment Indication name

Mandatory requirement for signalling control system

Interface types

Relay / Microlok SSI / Westlock

ATS 1 Essential switchboard one supply available

No ATS_ESS_NOR Nil

UPS healthy (drops out alarm)

with any UPS No UPS_NOR Nil

UPS on bypass No UPS_BYPASS Nil

UPS load on battery No UPS_BATT Nil

UPS ON No UPS_ON Nil

EC01 supply available and on line No EC01_NOR Nil

EC01 bypass supply available No EC01_BYPASS Nil

EC01 essential switchboard 2 supply available

No EC01_ESS_NOR Nil

Signals Signal reverse (RGK) Mandatory Combination of front contact of HR or front contact of LsPR and contact of VRR or front contact of RGKR

• combination of: - SnameT.asp0..asp2 LnameVRR – see train stops indications Rname.set

• logic to perform combination shall be provided by interlocking designer

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Equipment Indication name

Mandatory requirement for signalling control system

Interface types

Relay / Microlok SSI / Westlock

Signal normal (NGK) Mandatory Combination of back contact of HR or back contact of LsPR and front contact of VCNR or front contact of NGPR

• combination of: - SnameT.asp0..asp2 LnameVNR – see train stops indications

latch for train stop suppression where required logic to perform combination shall be provided by interlocking designer

Up direction indicator (_LUYR) No _UYR Nil

Down direction indicator (_DYR) No _DYR Nil

Signal key switch (_GZK) Mandatory _GZK _GZK

Signals Emergency replacement Mandatory Front contact of ENR SnameT.auto

Controlled signal Auto re-clear Mandatory Front contact of (A)SR SnameT.auto *see Note A1

Approach locked (ALS) Mandatory Front contact of ALSR/ALSK in MLK

SnameT.toal

Lever control (_LP) Mandatory Front contact of LPR Either: SnameT.ascon or LnameLPR latch

dc power supply dc power warning Mandatory Front contact of _WARN LnameWARN

dc power fail Mandatory Front contact of _FAIL LnameFAIL

Direction indicator Up direction (UD) Mandatory Front contact of DDKR or DDR LnameDDKR

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Equipment Indication name

Mandatory requirement for signalling control system

Interface types

Relay / Microlok SSI / Westlock

Down direction (DD) Mandatory Front contact of DDKR or DDR LnameDDKR

Direction override Timer initiation Mandatory “Section and direction identifier” _PBR

Nil

Direction override Mandatory “Section and direction identifier” SECTION_JR

Nil

Dual controls Control indicator Mandatory Front contact of _CONTROLK Latch

Control repeater Mandatory Front contact of _CONTROLK Latch

Earth leakage detector Earth leakage No Front contact of _ELD LnameELD

Emergency shunt function ESF enabled Mandatory Front contact of ESF_ON LnameESF * See Note A1

Fire system Fire No Front contact of _FIRE_ALARM LnameFIREALARM

Fire system fault No Front contact of _FIRE_FAULT LnameFIREFAULT

Flood detector Alarm No Front contact of _FLOOD_ALARM Nil

Warning No Front contact of _FLOOD_WARNING

Nil

Override No Front contact of _FLOOD_OVERRIDE

Nil

Half pilot staff HPS in lock Mandatory Front contact _HPS LnamHPS

High load detectors Alarm Mandatory Front contact of _ALARM Nil

Health EquipmentOK Mandatory _OK Nil

Level crossing (See Note A3)

Warning Mandatory Front contact of _NO_CHARGE LnameCHARGE

Alarm Mandatory Front contact of _LOW_BATTERY LnameBATTERY

Crossing normal No Front contact of XNR Nil © State of NSW through Transport for NSW Page 19 of 26

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Equipment Indication name

Mandatory requirement for signalling control system

Interface types

Relay / Microlok SSI / Westlock

Crossing control No Front contact of XR Nil

Local control Local Mandatory Front contact of LCR Nil

Remote Mandatory Front contact of RCR Nil

Closing Mandatory Front contact of _CLOSING Nil

Override control off Mandatory Front contact of _OVERRIDE_OFF_CONT

Nil

Override control auto Mandatory Front contact of _OVERRIDE_AUTO_CONT

Nil

Override control forced Mandatory Front contact of _OVERRIDE_FORCED_CONT

Nil

Override enabled Mandatory Front contact of OVERRIDE_KR Nil

Mastership Ready Mandatory A_ON_STANDBYK Nil

Master on line Mandatory A_MASTER_ONLINEK Nil

Non-stopping train function Enabled Mandatory Front contact of non-stopping train function

L-NON-STOP-TRAIN

Points Free WZ Mandatory Front contact of WZR LnameWZ

Normal NWK Mandatory Front contact of NWKR Combination of: - Pname.cn and Pname.dn

Reverse RWK Mandatory Front contact of RWKR Combination of: - Pname.cr and Pname.dr

Points maintenance isolating switch

Points maintenance isolating control off Mandatory Front contact of ZIR Nil

Releasing switches Normal detected NK Mandatory Front contact of NKR/NWKR/NR LnameNKR

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Equipment Indication name

Mandatory requirement for signalling control system

Interface types

Relay / Microlok SSI / Westlock

Normal locked NL Mandatory Front contact of NLR LnameNLR

Release reverse RL Mandatory Front contact of RLR LnameRLR

Routes Normal lock NL Mandatory Front contact of NLR Rname.set (to be inverted)

Available RUZ Mandatory RUZK Combination of indications.

Ring circuit (See Note A5) Machine in use MUR Mandatory Front contact of MuR Nil

Machine finished FUP Mandatory Front contact of FnPR Nil

Security system Security alarm No Front contact of _SEC_ALARM LnameSECALARM

Security fault No Front contact of _SEC_FAULT LameSECFAULT

Signal filament group Filament failure FCK Mandatory Front contact of FCKR Nil

Signal lamp group Lamp failure ECK Mandatory Front contact of ECR, qualification

with SnameT.lp

Slip (land) detector Slip detected Mandatory Front contact of SLIP NR LnameSLIPNR

Emergency slip override switch Mandatory Front contact of SLIP ALARM R LnameSLIPALARMR

Tracks Unoccupied _T Mandatory Front contact of TKR Combination of: - Tname.clear and Tname.bar

Track timers Expired _J Mandatory Front contract of TJKR LTnameJ

Train stops Normal VN See Note A2 Front contact of VNR LnameVNR

Reverse VR See Note A2 Front contact of VRR LnameVRR

Ventilation lock Enabled See Note A4 Front contact of VCKR Nil

Track sequencing alarm Alarm No Nil LALM(line-location) © State of NSW through Transport for NSW Page 21 of 26

T HR SC 01250 SP Interfaces Between Signalling And Control Systems

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Equipment Indication name

Mandatory requirement for signalling control system

Interface types

Relay / Microlok SSI / Westlock

Treadle Treadle_Fault Mandatory Nil Nil

Miscellaneous (See Note A6)

SSI interlocking critical fault Mandatory Nil Combination of: - nameStatus.newcrit nameStatus.ackcrit nameStatus.timeout nameStatus.disabled

SSI interlocking non-critical fault Mandatory Nil Combination of: - nameStatus.newcrit nameStatus.ackncrit

SSI interlocking disabled Mandatory Nil nameStatus.disabled

Communications OK Mandatory Front contact of Comms_System_OK

Nil

Master on line Mandatory A_MASTER_ONLINEK Nil

Dual link health No THIS_SIDE_OK Nil

OTHER_SIDE_OK

DUAL_LINK_OK

LINK A FOMS M1OK_for each location Mandatory <Location>LINK_A_FOMS_M1OK (for each location / card file)

Nil

LINK B FOMS M1OK_for each location Mandatory <Location>LINK_B_FOMS_M1OK (for each location / card file)

Nil

LINK A FOMS M3OK_for each location Mandatory <Location>LINK_A_FOMS_M3OK (for each location / card file)

Nil

LINK B FOMS M3OK_for each location Mandatory <Location>LINK_B_FOMS_M3OK (for each location / card file)

Nil

© State of NSW through Transport for NSW Page 22 of 26

T HR SC 01250 SP Interfaces Between Signalling And Control Systems

Version: 1.0 Issued date: 12 June 2015

Equipment Indication name

Mandatory requirement for signalling control system

Interface types

Relay / Microlok SSI / Westlock

Cardfile OK (see Note A7) Mandatory <Location> OK (for each location / cardfile)

Nil

This cardfile OK (for dual systems) Mandatory This <Location> OK (or A_OK) (for each location / cardfile)

Nil

Other cardfile OK (for dual systems) Mandatory Other <Location> OK (or B_OK) (for each location / cardfile)

Nil

On line Mandatory A_ONLINE Nil

ON standby Mandatory A_ONSTANDBY (or THIS_MLK_OK_OUT)

Nil

Dual link OK MP1 Mandatory MP1_DUAL_LINK OK Nil

Dual link OK MP2 Mandatory MP2_DUAL_LINK OK Nil

MP1 link <X> OK Mandatory MP1_PORT1LINK OK Nil

MP2 link <X> OK Mandatory MP2_PORT1LINK OK Nil

Microlok warning Mandatory MLK_WARNING Nil

Microlok diversity link in operation Mandatory _DIV_<LOCATION> <LINK> Nil

RS400 / RS416 LOC_A1_RS400_OK No Nil Nil

LOC_A_DAIG_RS416_OK No Nil Nil

Kingfisher Na No Nil Nil

Note A1: Preferred that these functions are performed wholly within the control system.

Note A2: These functions are only for intermediate train stops. Train stops at signals are to be combined with the NGK and RGK functions.

Note A3: Comprehensive level crossing monitoring is performed by the Cerberus systems.

© State of NSW through Transport for NSW Page 23 of 26

T HR SC 01250 SP Interfaces Between Signalling And Control Systems

Version: 1.0 Issued date: 12 June 2015

Note A4: Only included in signalling control system if it impacts signals clearing.

Note A5: Only for existing relay based entrance – exit interlockings with commence and finish functions performed within the relay interlocking.

Note A6: Where Ethernet switches are used, equivalent indications for the device health are to be substituted.

Note A7: Different configurations may require variation to these status bits.

Note A8: <name> indicates the location name.

© State of NSW through Transport for NSW Page 24 of 26

T HR SC 01250 SP Interfaces Between Signalling And Control Systems

Version: 1.0 Issued date: 12 June 2015

Appendix B Controls Table 2 – Controls

Equipment Control name

Interface type

Relay / Microlok SSI / Westlock

Auto re-clear Enable A(F)R See Note B1 See Note B1

Disable Normal A(FM)R or Inverted A(T)R See Note B1

See Note B1

Automatic signals with emergency replacement

Set auto EM_REP or EMRR Nil

Replace Inverted EM(T)REP or Normal EM(FM)REP

Nil

Direction override Set SECTION PB Nil

Dual controls Accept ACPT_RSR Nil

Cancel ACPT_UNR Nil

Emergency shunt function ESF request ESF See Note B1 See Note B1

Entrance exit routes Commence (F)R Nil

Finish (F)R Nil

Cancel (FM)R Nil

High load detectors Test _TEST Nil

Cancel _CANCEL Nil

Mastership Go master CTR_SYS_MASTER See Note B2 Nil

Non-stopping train function Enable NON_STOP_TRAIN_(R)R Nil

Disable NON_STOP_TRAIN_(N)R Nil

One control routes Request RSR pulsed QRname See Note B3

© State of NSW through Transport for NSW Page 25 of 26

T HR SC 01250 SP Interfaces Between Signalling And Control Systems

Version: 1.0 Issued date: 12 June 2015

Equipment Control name

Interface type

Relay / Microlok SSI / Westlock

Cancel UNR pulsed QXSname

Points Centre (C)R steady QPnameKC

Normal (N)R steady QPnameQN

Reverse (R)R steady QPnameQR

Releasing switches Lock (N)R steady Nil

Release (R)R steady Nil

Track sequencing alram Reset Nil QSEQRESET

Note B1: Preferred that these functions are performed wholly within the control system.

Note B2: Not to be used for new work.

Note B3: <name> indicates the location name.

© State of NSW through Transport for NSW Page 26 of 26