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Chapter 7: Event Rules, Event Actions and Application Logs
133
Event types
Radio buttons
Numeric sensor
threshold-crossing
events, or the
occurrence of the
selected event --
true or false
Available radio buttons include "Asserted,"
"Deasserted" and "Both."
Asserted: The EMX takes the action only
when the event occurs. This means the
status of the described event transits from
FALSE to TRUE.
Deasserted: The EMX takes the action only
when the event condition disappears. This
means the status of the described event
transits from TRUE to FALSE.
Both: The EMX takes the action both when
the event occurs (asserts) and when the
event condition disappears (deasserts).
For connection state for USB cascading
and auxiliary/RS-485 devices, assertion is
displayed as "connected" and deassertion
as "disconnected"
Discrete (on/off)
sensor state change
Available radio buttons include "Alarmed," "No
longer alarmed" and "Both."
Alarmed: The EMX takes the action only
when the chosen sensor enters the alarmed
state, that is, the abnormal state.
No longer alarmed: The EMX takes the
action only when the chosen sensor returns
to normal.
Both: The EMX takes the action both when
the chosen sensor enters or quits the
alarmed state.
Sensor availability
Available radio buttons include "Unavailable,"
"Available" and "Both."
Unavailable: The EMX takes the action only
when the chosen sensor is NOT detected
and becomes unavailable.
Available: The EMX takes the action only
when the chosen sensor is detected and
becomes available.
Both: The EMX takes the action both when
the chosen sensor becomes unavailable or
available.