Instruction manual

Designing and Planning an M2150 System
32 Access Control Design Guide
Six-State Supervision
Six-state supervision is applicable to monitor points connected to:
• Alarms controllers.
• 4in-8out or 8in-4out I/O modules fitted to M2150 controllers/database units with v3.0 or later
firmware.
Six-state supervision allows the status of a sensor tamper switch to be monitored, as well as both short-
circuits and open-circuits on the cable. Six-state supervision uses the cable termination shown in Figure
2-8.
Figure 2-8: Six-State Supervision