Section 75 of 105
73. Data, Control and Communication Interfaces
Stable section ID: S05-CON-014-SECTION-75 · 21 content blocks
Data, Control, and Communication Interfaces shall provide structured, secure, and interpretable exchange among authorized System05 assets and services.
Specifications shall define:
- Identity and addressing.
- Data schema and semantics.
- Units and coordinate systems.
- Timing and synchronization.
- Message priority.
- Command and acknowledgment behavior.
- Error and retry handling.
- Authentication and authorization.
- Confidentiality and integrity.
- Logging and audit requirements.
- Offline and degraded operation.
- Version compatibility.
- Data retention and ownership.
- Safe fallback behavior.
- Data values shall distinguish measured, calculated, inferred, commanded, simulated, and unknown states.
A successful message exchange shall not itself prove that the corresponding physical action occurred. Required physical confirmation, sensing, inspection, or evidence shall remain defined.
Safety-critical control shall not depend solely on a remote cloud service or unbounded AI interpretation.
Unauthorized software, firmware, schema, or control changes shall not alter physical asset behavior or Building BIOS configuration.
Communication loss shall produce a defined operational state rather than uncontrolled behavior.