Sequence Timing

This report has been specifically designed to meet the requirements of NR/SIN/137.

The report will provide a list of Level Crossing Warning Times for a given sequence and provide statistics to show how many trains fall into which time.

Access the Report

To access this report;

Login into Centrix
Click the Reporting tab on the main menu and select Sequence Timing
The list of current Sequence Timing reports should appear
Click Create New Report at the top of the page

Creating a New Report

To create a new report, fill in the input values (explained below) and click the Create Report button to generate a new report.

The report takes the following input parameters;

Parameter	Description	Example
Site Name	The level crossing site to generate a report for, select from the drop-down list.	My LX
Report Title	The title of this specific report, this will populate the "Line" field in the Excel report.	Up Fast
Time Range	The date range to run the report over. Select 'custom' to manually set a start and end date. To set these values, click the 'start date' and 'end date' boxes to bring up a date picker. The start date must be before the end date.
Channels	The unique sequence of events to extract the warning time. This must contain at least entries, one for the start event and one for the end event. For SIN/137 this should be the functions that represent the strike-in and arrival. Additional events may be added to guarantee a match on the sequence (specifically necessary for bi-directional lines). To add to the sequence, select the channel from the list, then click the + button. When you've added a channel to the sequence, you should select a State (either up or down). When you've added all the required channels, set the Start and End events using the radio buttons in the sequence list. The report will calculate the time between the Start and End event, this allows you to add sequence proving events before and after the start/end events without them affecting the sequence timing. There is a known limitation, any channels that are used in the sequence must have their states fully represented from the strike-in event through to the arrival event. This is especially important when using something such as a treadle as the strike-in, for example the following sequence will fail to generate any timings: 535b QNPR,DN,S 538 T1PR,DN,A By the time arrival event is fired, the train has already passed the treadle which caused the 535b QNPR channel to change state to UP. This extra event in between the strike-in and arrive causes the report generator to miss the sequence as the strike-in channel is essentially "disarmed" before the arrive event is encountered. To resolve this issue, simply ensure that all channels used in the level crossing sequence (535 QNPR and 538 T1PR in this example) have their states fully represented: 535b QNPR,DN,S 535b QNPR,UP,- 538 T1PR,DN,A The Event Replay feature in Centrix can help identifying the correct level crossing sequence.
Design Time	The minimum warning time (in seconds) from LX design	30

Dates

When selecting a custom date range, the time will be automatically set to midnight (00:00) on the start day and 23:59 on the end day.

Once you have specified the report parameters and clicked the Create Report button, you should be redirected back to the list. There, there should be a new report entry at the top of the list, with a loading spinner and a yellow indicator.

When the report has finished processing the indicator should change to green.

Viewing a Report

In order to view a report, click on the report, then press the green View button.

You will be taken to another screen, on the page you'll see a pair of graphs displaying the current distribution of time sequences for each bin. Each bin represents a particular sequence length in seconds, and the count is the number of sequences that have this length. These bins are automatically selected to fully contain all the available data. If you wish to reduce the number of bins this can be achieved by editing the minimum and maximum bin values below the graphs and pressing the View button.

The data used to generate these graphs is displayed below in the Sequence Data table.

Press the Raw Data link to see the raw event data which was used to generated the binned values. The Download .csv button allows you to download this data.

Duplicate a Report

If you want to run a new report with the same settings as an existing report but change only the dates (for example), you can click any report, then click the white Copy button.

This will copy the values from the selected report into the report generation form.

Download a Report

To download a .csv file with the raw data used by a report, click the report, then click the green View button. Once the report loads, press the blue Download .csv button.

You should then be prompted to download the report.

Delete a Report

To delete a generated report, click the Delete button on the report you wish to delete.

A confirmation dialog will prompt you to confirm the deletion.