Walchem WebAlert WA500, Инструкция по эксплуатации

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5.10 Manual Datalog
You may either download data files automatically, or manually. To have the data automatically sent to
you via email, set up the data log in the Auto Reporting page (See Section 5.9).
The Manual and Auto Reporting data logs are dynamically connected to each other. For each data log,
select the parameters to log, and the maximum time frame of the data log and submit the changes. The
controller will calculate the minimum interval between data points based on available memory, memory
required for each data log, and the settings for each data log.
Note that if you have a data log building, and you change the parameters to log, log duration or logging
interval, any data previously gathered will be lost! If the changes to one log results in less memory
being available for the other data log, the other log’s minimum logging interval may change, erasing the
other data log as well.
The data is collected into a log file until the end of the maximum duration, or until a user downloads the
file, (if the Delete Log After Download feature is enabled) whichever comes first. Once the log file is
downloaded, it is erased and a new log file is started. If the file is not downloaded by the end of the
maximum duration, or if the Delete Log After Download feature is disabled, the log file is saved and a
new file is started. No more than two files may be stored at any time, so if the file is not downloaded by
the time the second file is full, the first file is erased.
Maximum Log Duration
Select the maximum duration of the data log by selecting the time frame from the pulldown list. The
choices are 1 Month, 2 weeks, 1 week, 1 day, 12 hours and 1 hour.
Logging Status
For information
Minimum Logging Interval
The minimum time between data points will be calculated based upon the number of parameters
selected to log between the Auto Report Datalog and the Manual Datalog, and the log durations.
Logging Interval
Type in the text box the time required between data points. If this is set to a particular value, and
changes to the logging parameters results in a larger minimum interval, the time previously set will be
replaced by the new minimum interval.
Delete Log After Download
If you want the datalog file to be automatically deleted once it is saved, leave this selected as ‘Enable’.
Event Triggered Logging
If the data needs to be collected only when triggered by an external event, such as an alarm condition or
a signal from a dry contact switch connected to a digital input, click Enable. A link to a list of possible
triggers will appear once the changes have been submitted. Click this link, select the events to use to
trigger data logging, then go back to the Auto Reporting page. The data will be collected for as long as
the trigger is active.