American Fibertek CX-6p-PoE - Manual (Page 20)

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the CX-6p-PoE will reset and re-open the port, and will wait for the connection to be re-
established.
An option is available to only permit incoming TCP/IP connections from a specific
source. If the user specifies an IP address for a server mode port, only connections
from that port will be accepted.
Serial Client Mode
In Serial Client mode, the CX-6p-PoE will actively attempt to connect to a pre-defined
server device over the network. When a valid IP address and target port are set through
the configuration screen, the CX-6p-PoE will attempt to open a TCP/IP connection to
that address. Once a connection is made, serial data received on that hardware serial
port will be transmitted to the target server device, and data returned by the target server
device will be returned to the hardware serial port.
Data flow between the hardware port and the TCP/IP connection is bidirectional. The
rate at which data on the RS232 port is transmitted and received can be set through the
configuration web page.
Each serial port can only send data to a single target server address at once. If the
connection to the target server is lost, the CX-6p-PoE will immediately attempt to
reconnect. If the reconnect attempt fails, the CX-6p-PoE will retry every 60 seconds
afterwards to re-establish the connection.
Alarm input forwarding
The CX-6p-PoE has four contact inputs which can be connected to customer supplied
contact closure devices such as motion detectors or door switches. Each alarm input
can be linked through the CX-6p-PoE to trigger an aux contact output on that device, or
another CX-6p-PoE device or other AFI devices elsewhere on the network.
The conditions which will be considered an alarm can be set through the configuration
web page. Thus the CX-6p-PoE can be used with alarms where a contact is broken
(such as a wire break or emergency stop switch) or where a contact is made (such as a
motion detector). The minimum duration that the contact must be made or broken
before an alarm is registered can also be set by the user, so that the user can set an
alarm to trigger only if an alarm condition has been present for a certain amount of time.
Each aux input may also be configured to operate in ‘supervised’ mode, where the
contact will only be triggered when a 1K resistance is detected across the input. Either
an open circuit or a short circuit will be detected as no contact made. This can be set by
the user through the configuration screen.
When an alarm is triggered, the CX-6p-PoE can be set to activate aux output contacts
either on that same CX-6p-PoE, or on other CX-6p-PoE or AFI devices on the network.
The user can set which output to set and whether to turn it on or off in response to the
triggered alarm. The user can also set the target aux contact out to be set on or off for a
specific duration in response to a local alarm condition. Alternately the user can set the
target aux contact out to be set on or off indefinitely in response to a local contact, so