User's Manual

Chapter 3 - Operation and Administration Using the CLI NPU Configuration
4Motion 403 System Manual
3.3.15.5 Managing Dry-contact Output Alarms
Dry-contact output alarms are raised by the system to notify an external device
connected to the 4Motion unit about a change in the system state. The external
monitoring entity may take the appropriate action after receiving the notification
from the 4Motion system.
You can use the CLI to raise an alarm to the external entity that is connected to
the dry contact output pin. After the system returns to its normal state, you can
clear the dry contact output alarm that you had raised.
Dry contact output alarms are connected to the 4Motion system via a 25-pin
micro D-Type ALRM-IN/OUT connector on the NPU front panel. The following
figure depicts the ALRM-IN/OUT connector, and the pin numbers assigned to
each pin:
Figure 3-3: 25-pin Micro D-Type ALRM-IN/OUT Connector
You can configure upto three dry contact output alarms, each mapping to a
different pin number. This section describes the commands used for:
 “Raising Dry-contact Output Alarms” on page 403
 “Clearing Dry-contact Output Alarms” on page 405
3.3.15.5.1 Raising Dry-contact Output Alarms
You can raise a dry contact output alarm to any external entity that is connected
to the 4Motion unit via the 25-pin micro D-Type jack on the NPU front panel. To
raise a dry contact output alarm, run the following command:
npu(config)# dry-contact OUT <alarm_num (1-3)> alarm <alarm name >
In this command, the alarm_num parameter maps to a specific pin of the micro
D-Type ALRM-IN/OUT connector. The following table lists the pin numbers of the