Raritan PXE, Руководство пользователя

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Chapter 6: Using the Web Interface
169
"unavailable" State
The
unavailable
state means the connectivity or communications with the
sensor is lost.
The PXE pings all managed sensors at regular intervals in seconds. If it
does not detect a particular sensor for three consecutive scans, the
unavailable
state is displayed for that sensor.
When the communication with a contact closure sensor's processor is
lost, all detectors (that is, all switches) connected to the same sensor
package show the "unavailable" state.
Note: When the sensor is deemed unavailable, the existing sensor
configuration remains unchanged. For example, the ID number assigned
to the sensor remains associated with it.
The PXE continues to ping unavailable sensors, and moves out of the
unavailable
state after detecting the sensor for two consecutive scans.
Connected sensors always show
unavailable
if they are NOT under
management.
For DPX2 or DX sensor packages, all of the connected sensor packages
also enter the
unavailable
states if any of them is upgrading its
VHQVRU
firmware.
"normal" State
This state indicates the sensor is in the normal state.
For a contact closure sensor, usually this state is the normal state you
have set.

If the normal state is set to Normally Closed, the
normal
state means
the contact closure switch is closed.

If the normal state is set to Normally Open, the
normal
state means
the contact closure switch is open.
For a Raritan's floor water sensor, the normal state must be set to
Normally Closed, which means no water is detected.
Note: See Environmental Sensors Guide for information on setting the
normal state or dip switch. This guide can be downloaded from the
Raritan website's
PX2 Support Files page
( ).
For a numeric sensor, this state means the sensor reading is within the
acceptable range as indicated below:
Lower Warning threshold <= Reading < Upper Warning
threshold
Note: The symbol <= means smaller than (<) or equal to (=).