Xylem System 5000 User Manual - Manual (Page 48)

OUTPUTS
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The following Log File functions are available:
avg
Returns an averaged value of all values in the given range.
delta
Returns the difference between two values: the current Task value and the previous n
measurement, 1 being the previous measurement, 2 being two measurements previous,
and so on. For example, to record the change between the current scan value (x) and the
previous scan value (y), setting the Prev. n Measurements to 1 would yield the result of x
- y.
max
Returns the maximum value of all values in the given range.
min
Returns the minimum value of all values in the given range.
sum
Returns the summation of all values in the given range.
timofmin
Returns the date and timestamp of the minimum value of all values in the given range (e.g.
MM/DD/YYYY HH:MM:SS).
timeofmax
Returns the date and timestamp of the maximum value of all values in the given range (e.g.
MM/DD/YYYY HH:MM:SS).
intervalmin
Prints the date, timestamp, and minimum value in the previous output interval. Proper use of
this function requires the Output rate to be much larger than the Input rate. For example, if
the Input Scan Rate is set to every five minutes (00:05:00) and the Output Timed Rate is set
to every hour (01:00:00), at the end of each hour, a new line would be printed containing the
date, timestamp, and value of the minimum value found within the previous hour’s worth of
data.
intervalmax
Prints the date, timestamp, and maximum value in the previous output interval. Identical to
intervalmin, rather returning the maximum value. Please refer to the example given in the
above intervalmin function description.