What is the meaning of interlock lockout in CSOSS?

• A. It signals a data mismatch.
• B. It means the system is locked for maintenance.
• C. It indicates a condition where a function is prevented from being executed due to safety or prerequisite not being met.
• D. It means the weapon is ready for engagement.

Answer: (C)

Interlock lockout is a protective condition that prevents a function from executing until safety criteria or required prerequisites are met. This mechanism enforces the correct sequence and safeguards, so operations only proceed when the system is in a safe, prepared state. For example, you can’t start a critical sequence or engage a weapon if a safety interlock indicates an unsafe condition or a prerequisite step hasn’t been completed. It’s not about signaling a data mismatch or simply being in maintenance mode; those are separate states, whereas interlock lockout specifically blocks execution to uphold safety and proper sequencing.