SSI Link Analyser User Manual
Contents
1. 5 1 Laptop PC ST 130 The Laptop PC is used to run the SSI Link Analyser user interface software ST 135 The PC needs a serial port 9 way D type plug for connection to the Master Module and a USB port for connection to the Peripheral Power Lead Minimum PC specification Operating system Microsoft Windows 2000 or later Pentium M Processor 900MHz 256MB Display 1024x768 pixels 16 million colours It is strongly recommended that no other applications are run at the same time as the SSI Link Analyser this is to preserve accurate timing measurements PS PSL RD 014 MAN 008 Issue 4 Park Signalling Limited 2006 Page 7 of 21 5 2 5 3 5 4 Master Module ST 101 Master Module The Master Module performs the low level decoding of telegrams from the data link and passes the telegram data to the PC It is powered solely from the PC The Master Module has the following connections e Optical SMA jack for connection to the Optical Fibre e Expansion port socket 25 way female D type for connection to the Trigger Module or any future modules e A flying lead terminated with a 9 way female D type for connection to the Laptop PC s serial port When no peripheral modules are in use the Master Module s only power source shall be the Laptop PC s serial port Optical Fibre ST 110 Optical Fibre The Optical Fibre provides the connection between the Master Module and the Test Point A2. the trigger sequence is shown at the bottom of the trigger setup window You can edit the sequence by clicking on any underlined parts of it and choosing from the pop up list OR Trigger Example 1 Repeatedly display reply telegram 23 on an oscilloscope This is the simplest trigger scenario for the SLA If you wish to see the waveform of reply telegram 23 follow these steps 1 Connect the Trigger Module s trigger output to the scope s trigger input and set the scope s trigger slope to falling edge The trigger module s telegram output should be connected to a channel of the scope Delete any existing telegram patterns by clicking on each pattern and then clicking delete 3 Create a pattern for command telegram 23 by clicking add The pattern s values should be Data Direction 0 System ID XX Address 23 Data XXXXXXXX Status XXXXX Parity Valid Manchester coding Valid Set the trigger mode to OR continuous and the trigger state to Active 5 Click on Send to Trigger Module The trigger output will be activated falling edge at the end of each valid command telegram having address 23 By adjusting the trigger delay on the oscilloscope the next telegram reply 23 will be visible OR Trigger Example 2 Trigger once when TFM 47 reports an input or output failure If you wish to output a single trigger pulse when TFM 47 reports either an input interface failure or an output interface failure follow these steps 1 Co
3. by double clicking on a telegram s data or status bits 6 3 SLA Statistics This window is opened from the Show Statistics menu and displays the following telegram statistics e Frequency of missed telegrams e Frequency of glitches e Number of received telegrams total and per address e Missing telegram count for each address e Percentage telegram error for each address The display can be updated by clicking the Refresh button If you wish to save a copy of the statistics the Save to file button will let you create a tab delimited text file for importing into a spreadsheet or text editor The information table can be sorted by clicking on any of the column headers PS PSL RD 014 MAN 008 Issue 4 Park Signalling Limited 2006 Page 12 of 21 7 1 Teas LOGGING The SLA provides time stamped logging of events to the Laptop PC s hard disk The time is based on the PC s internal clock and has a resolution of 10ms All log settings are made in the Log Options window opened from the Log menu The log options window allows you to change settings for the log file as well as start and stop logging Log Options Events The log options window lets you choose which events you would like to be logged to disk from the following e Erroneous telegrams Tick this option to log the occurrence of any invalid telegrams e Missing telegrams Tick this option to log when a telegram is missing e Glitches Tic
4. for connection to the Peripheral Power Lead e Expansion port plug 25 way male D type for connection to the Master Module The BNC outputs are TTL compatible and are electrically isolated from each other and all other components of the SLA The Trigger Module is powered from the PC s USB port via the Peripheral Power Lead Peripheral Power Lead ST 120 Peripheral Power Lead The Peripheral Power Lead provides the power connection from the Laptop PC to peripheral modules i e the Trigger Module or any future modules The Peripheral Power Lead is not needed for the Master Module alone It is only needed when peripheral modules are in use The Peripheral Power Lead has the following connections e Expansion port plug 25 way male D type for connection to the Trigger Module e USB type A plug for sourcing power from the Laptop PC s USB port PS PSL RD 014 MAN 008 Issue 4 Park Signalling Limited 2006 Page 9 of 21 6 1 6 1 2 DISPLAYS The SLA has two different display modes Normal View and Zoom View Additionally a data link statistics window can be opened Normal View This is the default view for the SLA and comprises three display elements Telegram Displays ES 43 5 os Data Stews Dats Emus u SS SS SSS 01 0100 0000 00000 1010 O000 11111 02 1000 0000 00000 1010 0010 11111 The telegram display shows the following e The state of the data link The frame is white when the data
5. into log Use this command to place the parity error count into the log file This command is only available if logging has been started Glitches Reset count Use this command to reset the glitch count to zero Place count into log Use this command to place the glitch count into the log file This command is only available if logging has been started Reset Hardware Use this command to reset the SLA Master Module and any connected peripheral modules The SLA will re learn which telegrams are present on the data link Reset All Use this command to reset the SSI Link Analyser All error counts will be reset and the SLA will re learn which telegrams are present on the data link Exit Use this command to close the SSI Link Analyser program If the log is active you will be given the option to cancel the exit command PS PSL RD 014 MAN 008 Issue 4 Park Signalling Limited 2006 Page 20 of 21 View Show Statistics Use this command to display the SLA Statistics window Toggle Address Highlight Use this command to toggle an address highlight on off The highlight can also be toggled by clicking on the telegram address Clear All Highlights Use this command to clear all the address highlights from the telegram displays To set or clear highlights for individual addresses use the Toggle Address Highlight command Zoom On Address Use this command to switch to Zoom View Log Log Options Use this command to open the Log Options window Star
6. two different display modes Normal View and Zoom View 4 2 Operation Overview The SLA detects Manchester coding errors parity errors missing telegrams and glitches Ifa coding or parity error is detected the data contained in the telegram is deemed invalid and is discarded this will also cause a missing telegram to be logged in addition to the coding or parity error If a telegram is missing or its sync or timing bits have been corrupted it will be reported and logged as missing the data and status display will be cleared until a valid telegram is received again Other features of the SLA are e Logging events to hard disk see section 7 e Triggering other test equipment see section 8 Y Note that only telegrams present on the local baseband data link can be monitored Thus for SSI schemes utilising LDTs not all reply telegrams will necessarily be visible when monitoring at a trackside location PS PSL RD 014 MAN 008 Issue 4 Park Signalling Limited 2006 Page 6 of 21 5 SLA COMPONENTS Peripheral Power Lead Trigger Module Master Module Optical Fibre 4mm plugs to q A Data Link test points Test Point Adaptor The SSI Link Analyser SLA comprises the following Laptop PC e Laptop PC ST 130 e Master Module ST 101 e Optical Fibre ST 110 e Test Point Adaptor ST 112 e Trigger Module sT 121 optional e Peripheral Power Lead ST 120 optional
7. SSI Link Analyser User Manual Park Signalling Limited www park signalling co uk E m Sys Sa Bes PS PSL RD 014 MAN 008 Issue 4 Park Signalling Limited 2006 Page of 21 SSI Link Analyser PS PSL RD 014 MAN 008 User Manual Issue 4 CONTENTS Tee INTRODUCTION uta ibid 3 A ro O TOS 3 12 RARAS 3 LBs Abbreviations init A At ia ad 3 LA DIO A A Ao rad 3 2 STORAGEAND HAN DON a da a es 4 3 SOFTWARE INSTALLATION id RA A acts 5 4 SSI LINK ANALYSER GETTING STARTED ooooooccconocccnonnncnnnnconnnaconnnacnonoccnonncnnonnccoonccnonnccnonncos 6 Avy Runne The SEA A A das 6 4 2 Operation OVervie Waona aa e r E a a A a a OTa olas das 6 5 SLA COMPONEN TS 1 EI LA T TA ilar alec 7 A Laptop PESTO e 7 5 23 Master Module ST VOL cs a at tia ta nec dt EA did A 8 did Optical Fibre STO di AAA A dali 8 54 Fest Point Adaptor STA ida 8 5 5 Trigger Module ST Td a oad dans E 9 5 6 Peripheral Power Lead ST 120 ccc ccccssccssecsseceseceeseseeeeeseseneeeseeeseeeseecsaecsaecaecaeceseeneeneeeseneeeaeeaaes 9 6 MAS A AS 10 Gals Normal Vi Wii A pane eRe eens M n 10 O25 ZOOM Vie W cies Ptah fete an ha feta ted alae Rabe cas dist A aon Ne sca as haa ot a T 12 0d SLATS tat Stes iss eie A dt Esa 12 Te SNS O A ilgek da abautes 13 TA Lo Options El A A iii 13 12 Logs Options Fl tit diia di de ea ae E EE EEE E 13 E A CA RN ON 14 Si TRIGGERING e ds td o 17 8 1 Trigger Setup Wind Wichor a a a a AA a a 17 8 2 OR Trigge
8. The pattern s values should be Data Direction 0 System ID 04 Address 21 Data 1XXXXXXX Status XXXXX Parity Valid Manchester coding Valid 2 Rename the pattern just created to 21Red by slowly clicking twice on the existing name then typing the new name 3 Create a pattern for the signal being not red by clicking add The pattern s values should be Data Direction 0 System ID 04 Address 21 Data OXXXXXXX Status XXXXX Parity Valid Manchester coding Valid 4 Rename the pattern just created to 21 NotRed by slowly clicking twice on the existing name then typing the new name 5 Set the trigger mode to Sequential the setup window will expand to reveal the trigger sequence 6 Ifthe sequence is not clear click the Clear sequence button 7 Click on the line following Level 1 If and choose 21NotRed 8 Click on the line following then and choose goto level followed by goto level 2 9 Click on the line following else and choose goto level followed by goto level 1 10 Click on the line following Level 2 If and choose 21Red 11 Click on the line following then and choose trigger and goto level followed by trigger and goto level 1 12 Click on the line following else and choose goto level followed by goto level 2 13 Set the trigger state to Active 14 Click on Send to Trigger Module The trigger sequence starts at level 1 looking for the 21 NotRed pattern When 21 NotRed is seen t
9. as coding or parity errors the missing telegram count will be incremented Note that the SLA must have previously seen a telegram at a particular address before it can detect that telegram s absence Parity To provide protection from corruption a telegram has five parity bits at its end If the SLA detects an error in the parity bits the parity error count is incremented and the telegram is deemed invalid PS PSL RD 014 MAN 008 Issue 4 Park Signalling Limited 2006 Page 3 of 21 2 STORAGE AND HANDLING The SLA should be stored in a dry environment with a temperature range of 20 to 50 c When the PC is powered from its battery the SLA may be operated in the same environment as an SSI data link module If the PC is a c powered its power supply must be sheltered from any moisture It is recommended that any exposed connectors should have their covers placed over them in order to limit any damage to or dirtying of the connections The minimum bend radius of the Optical Fibre is 17mm further bending may damage the fibre causing unreliable operation As the SLA is electronic equipment please dispose of it responsibly when it is life 7 expired PS PSL RD 014 MAN 008 Issue 4 Park Signalling Limited 2006 Page 4 of 21 3 SOFTWARE INSTALLATION You will need administrative rights in order to carry out the installation and enter the licence code If the SLA software is not pre installed on the PC double click the SLA
10. cted The number of TFMs present This is the number of TFMs from which the SLA has seen reply telegrams The state of the logging When the log is active the log filename will be displayed along with its current file size Each time an entry is placed in the log the save icon will be briefly highlighted Peripheral modules present Peripheral modules can be connected to the SLA Master Module to provide enhanced functionality Mnemonics will be displayed on the status bar to show which peripheral modules are connected TRG SLA Trigger Module PS PSL RD 014 MAN 008 Issue 4 Park Signalling Limited 2006 Page 11 of 21 6 2 Zoom View It is envisaged that you will not always need to see all telegrams simultaneously The Zoom View provides a means to focus on a single telegram address In Zoom View the SLA displays e Data and status bits for the command and reply telegrams of one address only e The System ID of each of the two telegrams being observed e A missed telegram count for each of the two telegrams being observed When the data or status bits of a telegram change the SLA highlights the individual bits that have changed Note that Zoom View only affects the way that telegram information is displayed the SLA still monitors all telegrams and errors logging to file as required 11110000 Poapty Activean 18 e 111 1111 Zoom View is accessed from the Normal View window using the View menu or
11. daptor The use of an optical fibre gives robust electrical isolation between the signalling system and the Link Analyser Test Point Adaptor ST 112 Aas Test Point Adaptor The Test Point Adaptor converts the electrical current loop data link signal into an optical signal and provides protection from reverse polarity connection to the data link The Test Point Adaptor has the following connections e Optical SMA jack for connection to the Optical Fibre e Two flying leads terminated with 4mm banana plugs for connection to the data link test points the current loop interfaces provided at the interlocking and lineside locations The 4mm plugs are colour coded red for signal and black for return PS PSL RD 014 MAN 008 Issue 4 Park Signalling Limited 2006 Page 8 of 21 5 3 5 6 Trigger Module ST 121 expansion port Trigger Module The Trigger Module is an optional component that allows the SLA to connect to and trigger ancillary test equipment such as an oscilloscope A connection is also provided for ancillary equipment to monitor the telegram patterns The Trigger Module has the following connections e Trigger out BNC jack for connection to ancillary test equipment e g oscilloscope When a trigger event occurs a falling edge will be present on this output e Telegram out BNC jack for connection to ancillary test equipment e Expansion port socket 25 way female D type
12. ddress information is available due to corruption of the telegram 13 31 24 87 Count coding err 63 This shows when the user inserted the SLA s Manchester coding error count into the log using the errors sub menu PS PSL RD 014 MAN 008 Issue 4 Park Signalling Limited 2006 Page 14 of 21 13 31 24 87 Count glitches 509 This shows when the user inserted the SLA s glitch count into the log using the errors sub menu 13 31 24 86 Count missed tgms 328 This shows when the user inserted the SLA s missed telegram count into the log using the errors sub menu 13 31 24 87 Count parity err 2 This shows when the user inserted the SLA s parity error count into the log using the errors sub menu 13 31 04 07 Data link active This shows when a previously idle data link became active or the Test Point Adaptor was connected 14 04 35 07 Data link timeout This shows when a previously active data link became idle or the Test Point Adaptor was disconnected 13 31 09 29 Glitch 127 gt 161 This shows when the SLA detected 127 glitches The glitches preceded reply data direction 1 telegram 16 13 31 04 11 Learn 03 O Follows 02 1 This shows when the SLA first saw command data direction 0 telegram 03 and that it followed reply data direction 1 telegram 02 14 05 27 54 Mem261271 27 0 09 1001 0000 00000 Displayed at the start of logging this shows the current state of command telegram 27 in the SLA s memor
13. he sequence will move to level 2 looking for the 21Red pattern When 21Red is seen the trigger output will be activated and the sequence will restart Thus the trigger output is only activated when a transition to the red aspect occurs PS PSL RD 014 MAN 008 Issue 4 Park Signalling Limited 2006 Page 19 of 21 9 MENUS This section provides a short description of each command menu item The menus are accessed from the SLA s Normal View Monitor Errors Reset All Error Counts Use this command to reset all the error counts to zero The counts for missed telegrams coding errors parity errors and glitches will be cleared Place All Counts Into Log Use this command to place all the error counts into the log file This command is only available if logging has been started The counts for missed telegrams coding errors parity errors and glitches will all be logged Missing Telegrams Reset count Use this command to reset the missing telegram count to zero Place count into log Use this command to place the missing telegram count into the log file This command is only available if logging has been started Coding Errors Reset count Use this command to reset the coding error count to zero Place count into log Use this command to place the coding error count into the log file This command is only available if logging has been started Parity Errors Reset count Use this command to reset the parity error count to zero Place count
14. k this option to log all glitches The log will show how many glitches were seen preceding a particular telegram e All valid telegrams Tick this option to log all valid telegrams Note that this option will produce a very large log file e Learnt telegrams Tick this option to log when the first telegram is seen from each address e Telegram changes Tick this option to only log telegrams when their Data or Status changes This option keeps log files to a reasonable size while still recording all state changes on the data link e Exclude address 0 Tick this option to NOT log any data status changes for address 0 Address 0 is used by the diagnostic processor module in the interlocking and changes every major cycle This option keeps log files to a reasonable size while still recording all state changes on the data link When logging is started a list of the event types to be logged will be saved in the log file Additionally the current state of all the telegrams will be saved in the log file this is useful when only telegram changes are being logged Log Options File To choose a log file click the Change button after choosing the filename will be displayed beside the button If the log is currently active the previous log file will be automatically stopped and the new file started no events will be missed from the log PS PSL RD 014 MAN 008 Issue 4 Park Signalling Limited 2006 Page 13 of 21 7 3 The following file
15. le is connected The following options are available for the trigger setup e Trigger State This option allows you to set whether or not the trigger module is active This state will be sent to the trigger module when the Send to Trigger Module button is clicked or when a Reset All command is performed e Trigger Mode This option lets you choose between OR Single OR Continuous and Sequential trigger modes e Save Load You can save a trigger setup or recall a previously saved setup using the save and load buttons PS PSL RD 014 MAN 008 Issue 4 Park Signalling Limited 2006 Page 17 of 21 8 2 8 3 e Telegram patterns Up to eight telegram patterns can be created which the SLA Trigger Module compares against received telegrams You can add a new telegram pattern by clicking on the Add button this will open the pattern editor window You can edit an existing telegram pattern by clicking on the pattern and then the Edit button this will open the pattern editor window You can delete a telegram pattern by clicking on the pattern and then the Delete button Note that you cannot delete a pattern if it is currently used in the trigger sequence You can edit the name of a pattern by slowly clicking twice on its name When part of a pattern is X the Trigger module will not compare that part of the pattern with the received telegram i e it is a don t care condition e Trigger sequence When the Trigger Mode is Sequential
16. link is active The frame is hashed when no telegrams have been seen on the data link in the past 1 2 seconds e Data and status bits for all telegrams The data and status display is updated every time a telegram is received by the SLA The most recently updated information is marked with a small red dot in the centre of the data bits When any data or status bits change their background colour will change to yellow to highlight the change and then slowly fade back to grey If no valid telegram has been seen for a particular address its data display will show Sa Sa and its status display will show You can highlight telegram information for a particular address by clicking on the address label 00 to 63 Alternatively if you only wish to view one address information you can double click on the data or status information to switch to Zoom View To see the number of missed telegrams for an address rest the mouse pointer over its Data display for a moment e A single system ID of the received telegrams This is the System Identity of the received telegrams Error Displays The error displays show the following e Missed telegrams This is the total number of missed and or corrupt telegrams Double clicking the count will give the option of logging or resetting it PS PSL RD 014 MAN 008 Issue 4 Park Signalling Limited 2006 Page 10 of 21 Parity errors This is the total number of telegrams that have had pa
17. nd trigger ancillary test equipment such as an oscilloscope A connection is also provided for ancillary equipment to monitor the telegram waveforms The SLA provides three types of trigger configured in the Trigger Setup window e OR Single The trigger output is activated falling edge the first time any of the defined telegram patterns are detected only one trigger occurs irrespective of the number of patterns defined e OR Continuous The trigger output is activated each time any of the defined telegram patterns are detected e Sequential The SLA allows you to define up to eight trigger levels providing a logic analyser style of trigger Each trigger level has the form Level n If defined pattern detected then action 1 else action 2 where n 1 to 8 the trigger level where the sequence starts at 1 defined pattern is one of the eight user defined telegram patterns action can be goto level n trigger and goto level n or trigger and stop Note that no trigger options are available until the Trigger Module is connected and the SLA has been reset Trigger Setup Window The trigger setup window allows you to configure the SLA trigger The setup is sent to the SLA Trigger Module when the Send to Trigger Module button is clicked only available when the trigger state is set to active or when a Reset All or Reset Hardware command is performed Triggers can only be setup when the SLA Trigger Modu
18. nnect the Trigger Module s trigger output to your ancillary test equipment 2 Delete any existing telegram patterns by clicking on each pattern and then clicking delete t Note that if monitoring at an interlocking using LDTs reply telegram 23 will follow command telegram 24 PS PSL RD 014 MAN 008 Issue 4 Park Signalling Limited 2006 Page 18 of 21 8 4 3 Create a pattern for reply telegram 47 input interface failure by clicking add The pattern s values should be Data Direction 1 System ID XX Address 47 Data XXXXXXXX Status XXXOX Parity Valid Manchester coding Valid 4 Create a pattern for reply telegram 47 output interface failure by clicking add The pattern s values should be Data Direction 1 System ID XX Address 47 Data XXXXXXXX Status XX0XX Parity Valid Manchester coding Valid 5 Set the trigger mode to OR single and the trigger state to Active Click on Send to Trigger Module The trigger output will be activated falling edge the first time that either of the status bits 2 or 3 are zero in reply telegram 47 These bits represent input and output interface failures respectively Sequential Trigger Example Trigger each time a signal is changed to red Using the sequential trigger you can output a trigger each time a signal is commanded to change to red This example assumes that the red aspect is on TFM 21 output 7 and the system ID is 04 1 Create a pattern for the signal being red by clicking add
19. options are available e Append new entries Tick this option to append new events to the selected log file If this option is not ticked any previously stored events in the log file will be deleted when logging is started e Single file Select this option to place all log entries into a single file e Multiple files Select this option to automatically change the log file after it reaches the defined Max size in Mbytes The size can be set to any integer from 1 to 100 inclusive When the multiple files option is selected the chosen log file will become the log index having the filename start time and stop time of each individual file written to it The individual files will have names based on the index file For example if the chosen log file is newlog sla then the first file containing log entries will be newlog 001 sla the second newlog 002 sla and so on Log Entries An example of each type of log entry is given below listed alphabetically All log entries except for date changes have their times in the format hh mm ss ss 27 03 05 This shows when a new day began 13 31 04 59 Change 39 0 09 0100 0000 00000 This shows when the SLA saw either a data or status change for command telegram 39 39 telegram address 0 data direction 0 command 09 system identity 0100 0000 data bits 00000 status bits 13 31 09 74 Coding err This shows when the SLA detected a Manchester coding error in a telegram no a
20. r Example 1 Repeatedly display reply telegram 23 on an oscilloscope 18 8 3 OR Trigger Example 2 Trigger once when TFM 47 reports an input or output failure 18 8 4 Sequential Trigger Example Trigger each time a signal is changed to red cceceeseeeteeeteeeeeeees 19 9 MENU Sisa da aid E ESER E EEE E 20 PS PSL RD 014 MAN 008 Issue 4 Park Signalling Limited 2006 Page 2 of 21 1 INTRODUCTION 1 1 Purpose This document provides user instructions for Park Signalling s SSI Link Analyser SLA 1 2 Scope This document covers operation of the SLA To prevent duplication of information it is assumed that the user has read all the warnings cautions and safety information provided by the manufacturer of the PC 1 3 Abbreviations ID Identity LDT Long Distance Terminal part of SSI PC Personal Computer SLA SSI Link Analyser SSI Solid State Interlocking TFM Trackside Functional Module part of SSI USB Universal Serial Bus 1 4 Definitions Glitch A glitch is a high to low transition on the data link that is not part of a complete telegram Manchester To provide protection from corruption telegrams are Manchester coded coding each bit is represented by two line states of opposite polarity If the SLA detects an error in the coding the coding error count is incremented and the telegram is deemed invalid Missing telegram Ifa telegram is absent or deemed invalid i e h
21. rity errors The missed telegram count will also be incremented every time this count is incremented as the telegram is deemed invalid Double clicking the count will give the option of logging or resetting it Manchester coding errors This is the total number of telegrams that have had Manchester coding errors The missed telegram count will also be incremented every time this count is incremented as the telegram is deemed invalid Double clicking the count will give the option of logging or resetting it Glitches This is the total number of glitches detected A glitch is defined as a high to low transition on the data link that is not part of a complete telegram Double clicking the count will give the option of logging or resetting it Status Bar Vondcang Date Link Acie Te 59 Or Bi ates TAG The status bar shows the following from left to right The state of the SLA ar Waiting for SLA to initialise The PC is trying to detect the SLA Master Module Waiting for reply from SLA hardware The PC has detected the SLA Master Module and is waiting for a reply from it should last no longer than 1 second SLA hardware error check and reset An initialisation error has occurred Reset All should be pressed Monitoring Data Link Active The SLA is monitoring telegrams on the data link Monitoring Data Link Idle The SLA is active but no telegrams have been seen in the past 1 2 seconds or the data link is not conne
22. t Logging Use this command to start logging events to disk This command is only available if a log file has been chosen in the Log Options window and logging is currently inactive Stop Logging Use this command to stop logging events to disk This command is only available if logging is currently active Trigger Setup Trigger Use this command to open the Trigger Setup window The trigger setup window is only available when the SLA Trigger Module is connected to the SLA Master Module Help SSI Link Analyser Help Use this command to open this help file at the contents page What s This Use this command to change the mouse pointer to R Help text will then be displayed for a particular area of the screen by clicking on it About SSI Link Analyser Use this command to display the version numbers of the SLA software and the SLA Master Module PS PSL RD 014 MAN 008 Issue 4 Park Signalling Limited 2006 Page 21 of 21
23. x _yy msi file on the installation CD where SLA version x yy and follow the on screen instructions When the SLA software is first run it will provide you with a licence request code to quote to Park Signalling this will allow a licence code to be generated for you Note that the SLA will not function until a valid licence code has been entered PS PSL RD 014 MAN 008 Issue 4 Park Signalling Limited 2006 Page 5 of 21 4 SSI LINK ANALYSER GETTING STARTED The SLA is a PC based test tool providing a means to observe and record all messages being transferred on an SSI Trackside Data Link in real time Additionally the SLA detects line glitches and corrupt absent telegrams 4 1 Running the SLA e Ensure the SLA components are in good condition and have no visible damage e Ensure the SLA is not and will not be exposed to rain sleet or snow though limited splashes of rain will not affect the SLA s operation e Connect all the SLA components see section 5 e Run the SSI Link Analyser program on the laptop PC if the program is already running select the Reset All command from the Monitor Menu e The SLA program will start in the Normal View The SLA is operational when the status bar shows that the SLA is monitoring When the SLA starts monitoring it will learn which command and reply telegrams are being transmitted on the Data Link this information is necessary for detection of missing telegrams The SLA has
24. y Mem current memory 261 the preceding telegram in the major cycle is address 26 reply data direction 1 271 the proceeding telegram in the major cycle is address 27 reply data direction 1 09 system identity 1001 0000 data bits 00000 status bits PS PSL RD 014 MAN 008 Issue 4 Park Signalling Limited 2006 Page 15 of 21 13 31 09 29 Missing 58 1 This shows when the SLA detected that reply telegram 58 was absent 13 31 09 74 Parity err 11 0 09 1110 0001 11111 This shows when the SLA detected a parity error in command data direction 0 telegram 11 As a parity error deems the telegram invalid the system identity data bits and status bits are shown for information only 14 05 30 24 Reset All This shows when the user executed a Reset All command 14 05 32 38 Reset Hardware This shows when the user executed a Reset Hardware command 13 30 57 09 Start log 26 03 05 This shows the time and date when logging started 13 31 29 71 Stop log 26 03 05 This shows the time and date when logging stopped 13 31 05 00 Tgm 07 1 09 1010 0001 11111 This shows when the SLA saw reply telegram 07 but no data or status changes occurred 07 telegram address 1 data direction 1 reply 09 system identity 1010 0001 data bits 11111 status bits PS PSL RD 014 MAN 008 Issue 4 Park Signalling Limited 2006 Page 16 of 21 8 1 TRIGGERING With the addition of the Trigger Module the SLA can connect to a
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