25 Interface requirements for alert related communication
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Resolutions - Maritime Safety Committee - Resolution MSC.252(83) - Adoption of the Revised Performance Standards for Integrated Navigation Systems (INS) - (Adopted on 8 October 2007) - Annex - Performance Standards for Integrated Navigation Systems (INS) - Module C - Alert management - 25 Interface requirements for alert related communication

25 Interface requirements for alert related communication

  25.1 Connected sources, sensors and systems taking part in the alert related communication should follow a standardized communication concept. Internal alert related communication within an individual source, sensor and equipment may use an alternative communication concept.

  25.2 The communication protocol should allow the implementation of the functions described in these standards. In particular, this includes:

  25.2.1 Transmission of all relevant alert priorities, states, associated quality information, additional alert message information for, e.g., explanation of alert, decision support.

  25.2.2 Transmission of alert source identity so that originator component and/or function can be determined, as well as it being possible to differentiate between alerts originating from the same device but at different time and also between alerts indicating different conditions from the same device at the same time.

  25.2.3 Transmission of acknowledgement and silence signals between the device where the alert was silenced or acknowledged and the device where it originates and where it may also have to be silenced/acknowledged.

  25.2.4 Transmission mechanisms that avoid that signals in one or the other directions are lost (by fully reliable transmissions or by suitable retransmissions).

  25.2.5 Mechanisms that allow consistent reconnection of a component of the INS system to the system after disconnect at any time and in any alert condition.

  25.2.6 In general, mechanisms that allows consistency in the complete INS with regards to alert management.


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