4.6 Data communication
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4.6 Data communication

  4.6.1 The data communication link should be continuously self-checking, for detecting failures on the link itself and data communication failure on nodes and should give an alarm in the event of an abnormal condition.

  4.6.2 When the same data communication link is used for two or more essential functions, this link should be redundant. Redundant data communication links should be routed with as much separation as practical.

  4.6.3 Switching between redundant links should not disturb data communication or continuous operation of functions.

  4.6.4 To ensure that data can be exchanged between various systems, standardized interfaces should be used.

Parent topic: 4 System Configuration
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