American Fibertek Net I/O N-111 - Manual (Page 23)

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The N-111 has a watchdog feature which allows it to monitor the function of a network
connected device. The N-111 can monitor a network device by periodically sending ping
requests to the device over the network. After a number of pings without responses
from the target device, the N-111 takes an action which can be configured by the user.
This action can consist of either setting the aux contact output on the N-111 for a set
period of time, sending a TCP message over the network to a user-defined destination,
or sending an alarm email to a user-supplied address.
This feature permits the N-111 to monitor an external piece of network-connected
equipment, and on detection of a failure trigger an alarm, notify a technician, or power-
cycle an external device through a relay.
Pilot interface
The N-111 is intended to communicate over the network with up to four Pilot server
devices. The user will provide an address and port number for each of the Pilot servers
he wishes the N-111 to communicate with. The N-111 will automatically attempt to
connect to Pilot servers when a valid IP address and port number have been provided.
Once connected to a Pilot server, the N-111 will send updates of the status of all alarm
inputs and aux outputs to each Pilot server every 5 seconds. It will also send immediate
updates every time an alarm input or aux output changes state. These messages can
trigger events in the Pilot VMS software.