YSI WaterLog Series, Owner'S Manual

Page: 42 / 174

Output Rates and Conditions
Outputs have a variety of options available through their Properties screens. The Properties
screens are accessed through either adding a new Output or pressing the Edit Output button, after
selecting the desired Output, on the Edit Task screen.
Type: The majority of Outputs run on the same schedule as their Inputs. This option can be
changed, however, if the Output should be run at a different rate and/or based on the true/false
evaluation of a Conditional statement.
Run with Input: Sets the Output to run on the same schedule as the Input. The Input’s
measurement schedule can be viewed by pressing the View button.
Timed Rate: Sets the Output to run on a specified schedule, regardless of the Input Scan Rate.
Note that this interval should be a multiple of the Input’s Scan Rate. If the Timed Rate is faster
than the Input’s Scan Rate, values may not be available for the Output to use. To modify the
Timed Rate (or other Advanced Scanning Options), press the Edit button next to the listed rate.
Rates are in a 24-hour format of HH:MM:SS. Timed Rates can be useful, for example, with a
Log To File Output when processing functions (such as minimums and maximums) are being
used. An Input could be set at a 1-minute (00:01:00) Scan Rate with a Log To File Timed Rate
set to 5-minutes (00:05:00). In the Properties for the Log File, the Tasks could be given
functions to avg, min, or max the previous five (1-minute) values.
Conditional: A Conditional statement can be used to determine if the Output should be run. If
the resulting value is greater than zero, the Output will proceed. Otherwise, the Output will not
be run and the next Output or Task will be processed. A logical statement that evaluates to true
or false (e.g. Battery > 0) can also be used and is processed accordingly. The setup of a
Conditional statement is nearly identical to that of a Custom Function, minus the RawValue
reading of the current Task (as the measurement will have already been made and calculated at
this stage).
4-16 Managing Tasks
System 5000
TM