An Alarm message indicates that a feed in to Darwin has stopped, or has re-started.
The alarms sent are as follows:
|tdAreaFail||Darwin has detected that no data has been received from a single TD for a period of time|
|tdFeedFail||Darwin has detected that no data has been received from any TD for a period of time|
|tyrellFeedFail||Darwin has detected that its connection to Tyrell has failed|
Each alarm has a unique identifier, and may be cleared with an alarm being received with a 'clear' element and the same unique identifier.
<alarm> <al:set id="20669"> <al:tdFeedFail /> </al:set> </alarm> <alarm> <al:clear> 20669 </al:clear> </alarm>
<alarm> <ns11:set id="379654"> <ns11:tdAreaFail>E1</ns11:tdAreaFail> </ns11:set> </alarm> <alarm> <ns11:clear>379654</ns11:clear> </alarm>
|National Rail Enquiries Data Feeds|
|Data Feeds||About the Feeds • Darwin Webservice (Public) • Darwin Webservice (Staff) • Historical Service Performance • Push Port • KnowledgeBase • DTD • Locations (PoC) • Real Time Journey Planner|
|DTD||About • Fares • Timetable|
|Push Port||About • XML Schemas • Schedules • Associations • Train Status • Station Messages • Alarms • Train Order • Train Alerts • Formations • Formation loading|