Ports & Devices - Axis 250S User Manual

The System Options
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The final multicast setting is the Time to live value. If IP packets (i.e data) fail to get
delivered to their destination within a reasonable length of time (which could be for
various reasons), this setting tells network routers when to discard the packet. The value is
usually measured in "hops", i.e. the number of network routers that can be passed before
the packet arrives at its destination or is dropped.
Important!
Note that some network routers may need to be configured to allow RTP traffic.
Ports & Devices
IO Ports
This page allows you to enable and configure the four inputs and one output supported by
the server. Ports can be enabled or disabled, given descriptive names, and their Normal
state can be configured.
The normal state describes the inactive state for the port. It is also an indication of the
function of the connected equipment and how it is activated. For example, if the activation
circuit in a door switch connected to an input is normally closed, this means that as long as
the door is closed then the state is also closed (inactive). When the door is opened the door
sensor will be active and the input will no longer be in its normal state. This is how events
based on external equipment are triggered.
Thus, in the I/O port list, if the Normal state for an input is set as Open, but the Current
state is shown as Closed, then the port has been activated, and vice versa.
Important!
Please note that some external devices may behave incorrectly in the event of an error
condition, e.g. a power cut.
COM-Ports
The COM ports on the AXIS 250S are accessed via the serial connector (RS-232) and
terminal block B (RS-485) on the rear of the unit. Select the port from the links in the main
menu.
Devices (Pan/Tilt/Zoom devices, etc.) connected to the COM-ports on the AXIS 250S can be
controlled via Generic TCP/IP or Generic HTTP. Settings are managed and configured
directly from the user interface.
AXIS 250S User's Manual