Honeywell Centraline FALCON User Manual page 219

USER GUIDE
date/time is reached and ends at stop date/time. During trending the status is
active as indicated by the checked Active option.
r. To stop Trending, click the DISABLE LOGGING button
(Status: Enabled=unchecked, Active=unchecked).
Start and Stop Date/Time is defined under Trending Start / Stop Date and
Time.
Trend Parameter
Here you can define the time interval in which a parameter should be logged
s. Enter the time in h:m:s in the Log every fields.
NOTE: For the log interval setting, the following guideline should be
considered:
Based on the default log interval for time-based trending (1 minute)
and the max. no. of trend log objects (125), a maximum of 2 trend
records per second can be created:
125/60 = 2 (limiting factor)
For value-based trending, the default log interval should be estimated
roughly by noting the no. of value changes which occurred within an
appropriate time period.
Any calculations should result in a limiting factor of less than 2 (trend
records per second).
Example:
You have a trend setting of 40 trend log objects with 1 trend record per
minute plus 20 trend log objects with 1 trend record per 2 minutes.
The result is an addition of the values as follows:
40/60 + 20/120 = 0.833 => less than 2
Trending Start / Stop Date and Time
Here you can define the time range (start and stop date/time) of the trending.
To define the time range, do the following:
t. Click the Start Date checkbox and enter the start date into the fields or select
date by clicking the BROWSE button.
u. In the Time fields enter the time
NOTE:
If the checkbox is unchecked, the fields are disabled. This means, that trending
will occur on any date up to and including the end date.
v. Click the Stop Date checkbox and enter the end date into the fields or select
date by clicking the BROWSE button.
w. In the Time fields enter the time
NOTE:
If the checkbox is unchecked, the fields are disabled. This means, that trending
will occur on any date from the start date on.
NOTE:
If both fields are disabled, trending will occur instantly and all the time.
If clicking the ENABLE LOGGING button enables the trend logging, the trending
starts as soon as the start date/time is reached and ends at stop date/time.
During trending the status is active as indicated as checked Active.
Stop of Trending is done by clicking the DISABLE LOGGING button (Status:
Enabled=unchecked, Active=unchecked).
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FALCON
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