Walchem WebMaster ONE Instruction Manual page 140

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.
Datalogging Mode
If data needs to be logged at all times, select Normal.
If datalogging of some parameters needs to be suspended during an Interlock condition, or when a
generic digital input is in a certain state, or when a relay is on or off (as in during a Probe Wash
cycle, for example) or during an alarm condition, select Suppressed by Events. The data will be
suppressed for as long as the trigger is active.
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 Event
Triggered. The data will be collected for as long as the trigger is active.
Select items to log
You will be presented with a list of all of the parameters that can be logged, including sensor
readings, totalizers, drum levels, and 4-20 mA inputs. The contents of the list will vary depending
on what options you have installed or programmed. Click the "Yes" radio buttons of the
parameters that you want to log, and the "No" radio buttons of the parameters that you do not want
to log.
Suppresses Datalogging
This only appears if the Datalogging Mode is set to Suppressed by Events. A column to the right
of each parameter will show a link to a page listing each event capable of suppressing the
datalogging of that parameter. Place a check in the box to suppress logging of that parameter if
that event is active.
Triggers Datalogging
This only appears if the Datalogging Mode is set to Event Triggered. Columns to the right of each
parameter will show a link to a page listing each event capable of triggering the datalogging of that
parameter. Place a check in the box to trigger logging of that parameter if that event is active.
Log Files
Links to the last two copies of the log files are saved in the event that the emails fail to be sent
successfully. Click on the link to manually retrieve the file.
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