This is the primary system unit, designed to provide the stakeholders with the system deliverables.
The following table provides links to methods for preventing hazards that might be generated in the functional unit:
Hazard type |
Prevention |
| Hardware faults | examine ... |
| Extreme deviation in the input received from external sources | examine |
| Unintended behavior due to specification and design mistakes and software bugs | examine |
| Problems in the coordination between the system units | examine |
| Problems in coordinating with external units. | examine |
The functional unit receives input from the operators (the stations ) through gates, and also functional input from external systems through various channels.
Besides, the unit gets the situation from the Scenario analyzer on demand.
Besides the functional processing, the functional unit does the following resilience-oriented processing as follows:
Beside functional output to external systems, the functional unit also events received and generated in the unit, with its situation .
Also, the unit updates the Scenario analyzer with this information.
Updated on 20 Mar 2016.