Across
- 3. ------- Unit: The Level 1–Level 2 interface transfers real-time process data upward and operator commands downward
- 4. Acts to prevent Main line protection functions actuating
- 6. Siemens networking gear securing plant communications
Down
- 1. Network used for communication between AP and FUM
- 2. Supervisory system managing distributed controllers
- 5. ------- Bus : Used by PAS