Chapter 6: Using the Web Interface
168
Position
Serial
number
Type
Channel (for a sensor package with contact closure or dry
contact channels)
Whether the sensor is an 'Actuator' or not (if yes, this icon
appears in the Actuator column)
Reading
State
States of Managed Sensors
An environmental sensor shows the state after being managed.
Available sensor states vary depending on the sensor type -- numeric or
discrete sensors. For example, a contact closure sensor is a discrete
(on/off) sensor so it switches between three states only -- unavailable,
alarmed and normal.
Note: Numeric sensors show both numeric readings and sensor states to
indicate environmental or internal conditions while discrete (on/off)
sensors show sensor states only to indicate state changes.
Sensor state
Applicable to
unavailable All
sensors
alarmed Discrete
sensors
normal All
sensors
below lower critical
Numeric sensors
below lower warning
Numeric sensors
above upper warning
Numeric sensors
above upper critical
Numeric sensors
Summary of Contents for PXE
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