TCW220_R4.15
–
November 2022
Page 19
7.2.4.
Conditions
This section is used for parameterization of the trigger and alert conditions for 1-Wire sensors,
analog inputs, virtual items and digital inputs.
7.2.4.1.
1-Wire sensors, analog inputs and virtual items
For every sensor two type of fields are presented
–
one is for setup
of trigger conditions (“Min”,
“Max” and “Hys.”) and
another for
alert notification (“
If out of range
”).
“Min” and “Max” indicate
the border of working range for the observed parameter.
A “Max” trigger condition occurs when the value exceeds the trigger set point. A “Min” trigger
condition occurs when the value is lower than the trigger set point. In both cases, the monitored
parameter goes out of range.
Coming back in range for the observed parameter is considered when the value goes higher
than (Min + Hys) or lower than (Max
–
Hys).
Hysteresis (“Hys”) is used to prevent excessively
triggering when the value vacillates around the trigger point.
Summary of Contents for TCW220
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