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ROC alarm scenario:
System measures stage every 15 min
ROC Alarm threshold is at 2ft
Tx Alarm Interval is 5min (not relevant)
If the most recent stage minus the prior sample is 2ft or greater, the system sends out an alarm
transmission.
No transmissions are sent until the next measurement time (15 min)
At the next measurement time, another ROC computation is made. If current minus prior is 2ft or
greater, another transmission is made.
Note how the Tx Alarm Interval is not relevant to this scenario.
10.7
Logging Settings
10.7.1
Logging Interval
Logging Interval
dictates how often to log sensor data.
Change the
Logging Interval
to measure sensors more frequently than to log them. This is useful for alarm
setups, in which you want to check the water level once a minute in order to detect fast-rising water, but
one only wants to log the water level data once an hour. For this scenario, the
Measurement Interval
would be one minute, and the
Logging Interval
would be one hour.
For alarm conditions, it is possible to set
Alarm Logging
to
Every Reading.
That would result in the water
level in the example above being logged once a minute when the system was in alarm, and logging once
only once an hour when not in alarm.
If
Logging Interval
is set to zero, the station will log every measurement. It is the same as having the
Logging Interval
equal to the
Measurement Interval.
LinkComm provides a
Log All
checkbox: when checked, the station will measure and log at the
Measurement Interval.
Having a
Logging Interval
that is shorter than the
Measurement Interval
is a bad setup.
Only logged readings may be transmitted.
It is not possible to entirely disable logging of measurement results. However, one can set the logging
interval as slow as once a day.
10.7.2
Log Error Value
When the system cannot get valid data from a sensor (more specifically, when a sensor failure error
occurs), the system will change the sensor reading to match the user-set
Log Error Value,
which defaults to
-
99999. Such atypical numbers are used to attract the user’s attention w
hen viewing the log.
Содержание SUTRON XLINK 100
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