Building BIOS Architecture

Every registered Component and Cartridge shall follow a defined lifecycle and operational state model.

The general lifecycle states are:

proposed;

registered;

manufactured;

delivered;

stored;

assigned;

installed;

commissioned;

in service;

removed;

under inspection;

under repair;

refurbished;

approved for reuse;

decommissioned;

recycled or disposed.

The general operational states are:

unknown;

unavailable;

inactive;

standby;

starting;

active;

degraded;

faulted;

isolated;

maintenance;

emergency operation;

shutting down.

Physical connection state, lifecycle state, and operational state shall remain separate. A Cartridge may be Installed, Connected, and Inactive; or Removed, Under Refurbishment, and unavailable to the building.

Each entity shall declare:

supported states;

initial state;

entry conditions;

exit conditions;

permitted commands;

prohibited commands;

required dependencies;

safe state;

fault state;

recovery states.

Passive components may not communicate their state electronically. Their state may be established through inspection, installation records, physical indicators, monitored dependencies, or authorized human confirmation.

A component reporting Active while its required Interface is Disconnected shall create a State Conflict.

Safety-critical components shall not return from Faulted to Active without the required clearance, testing, and authorization.