To configure a variable to get values from source, select System Setup, Edit/View Variables in WIMS and select the Interface tab.

Then click Interface To radio button. The drop down box next to the option is now enabled, click the drop down arrow and choose the  interface name (name given when configuring the interface).

• TAG: Required. The source identifier for the samples to retrieve results for this variable.

• Statistic: Required. The summary (aggregate) to calculate when pulling data from the source.  The Statistic Field is actually used by the Utility   This is a listing of all the statistics supported by this interface. 

WIMS Stat	Requested Statistic_Agg	Description
Average	AVERAGE	The time weighted average for the requested time period.
UVSET	TIME_SET	Time in seconds that the point was set.  Result is stored in the next WIMS data slot.  For example, data is requested for 1/1/2012, the value is stored for 1/2/2012.
UVRAW	RAW	First Raw value in the requested time period
FIRST	RAW	First Raw value in the requested time period
LAST	RAW	Last Raw value in the requested time period
MAXIMUM	MAXIMUM_VALUE	Maximum value in the requested time period
MINIMUM	MINIMUM_VALUE	Minimum value in the requested time period
TIMESET	TIME_SET	Time in seconds that the point was set.  Use Scale Factor of 0.01667 to convert to minutes, 0.000278 to convert to hours.
TIMEMAX	TIME_OF_MAXIMUM	Time of Maximum returned as a string. Format mm/dd/yyyy hh:mm:ss, example 01/17/2012 14:33:25
PREVMAX	MAXIMUM_VALUE	Maximum value in the requested time period
PREVMIN	MINIMUM_VALUE	Minimum value in the requested time period
PREVSET	TIME_SET	Time in seconds that the point was set
TOGS	TOGGLE_SET	Count of digital transitions to set state over interval
RESET	TIME_RESET	Time in seconds that the point was reset.
TIMEMIN	TIME_OF_MINIMUM	Time of Minimum returned as a string. Format mm/dd/yyyy hh:mm:ss, example 01/17/2012 14:33:25
TOG	TOGGLE	Count of digital transitions over interval
TOGR	TOGGLE_RESET	Count of digital transitions to reset state over interval

This is the value to multiply the result by when using parameter variable types. Commonly used to convert from one unit base to another. For example to convert gallons per minute (GPM) to gallons per day (GPD), set the scale factor to 1440 (1440 minutes per day).  To convert seconds to hours use a Scale Factor of 0.000278.

 The Filters are used to filter out unwanted values. Blank or the work 'None' means to ignore this option. A Low Range value tells the interface to use this value instead of the value returned. For example, if we set Low Range to 0 (zero), then any negative result returned is set to 0 (zero). A High Range value tells the interface to use this value instead of any values above the value. For example, if we set the High Range to 10, then any value greater than 10 will be set to 10.

NOTE:  The Filter is applied first and then the Scale Factor.  For example, if the DCS_POINTS_RETRIEVED value is 5 and our Low Range is set to 10 and the scale factor is 3 we will return 30.  The value 5 is below the low range of 10, so 10 is used, then the scale factor of 3 is applied (10 * 3) and 30 is returned.