Alarm Port
The Alarm port requires a male DB-9 connector. The following table lists the signal for each pin.
Table 6: Alarm Port Pin Allocation
Pin Number Signal
1 Critical Alarm (See Note 2)
2 Critical Alarm Return (See Note 2)
3–
4 Major Alarm
5 Major Alarm Return
6 –
7 Minor Alarm
8 Minor Alarm Return
9–
Notes:
1. Contact closed when alarm is present.
2. Loss of power to the controller trips (closes) the Critical Alarm relay on the alarm port. The alarm
port is not available on the AX, CX/CXi, and CX II/CXi II.
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