Multismart Functions & I/O Blocks - MultiTrode MultiSmart Installation & Operation Manual

MultiSmart Installation & Operation Manual
24.3 MultiSmart Functions & I/O Blocks
In order to support the greatest power and flexibility of a MultiSmart unit, a number of functions and function
blocks have been defined.
MultiSmart function blocks can be categorized in one of two groups:
High level – function blocks for controlling pumps, determining the current level of the well, etc.
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Low level – function blocks for interacting directly with the MultiSmart tag database.
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24.3.1 High Level Functions & Function Blocks
24.3.1.1 CurrentLevelPercent
This function returns the current level of well 1 as percentage.
24.3.1.2 This function returns the current level of well 1 as percentage. CurrentLevelScaled
This function returns the scaled level of well 1.
With a MultiSmart unit, it is possible to redefine the scaling of the level of the well. For example, it is possible
to express the level of the well in feet, with the full depth of the well defined as 10ft. It is also possible to
define an offset, or datum point. The CurrentLevelScaled function takes all of these definition into
account for its calculations. If no scaling has been defined for a unit, then this function returns the same
result as CurrentLevelPercent.
24.3.1.3 CurrentTime
This function returns the current time of the MultiSmart as seconds (UDINT) since 1/1/1970.
24.3.1.4 CurrentTimeOfDay
This function returns the current time of the day in ISaGRAF TIME format.
24.3.1.5 DateTime
This function takes the number of seconds of the particular time since 1/1/1970 as input (UDINT) and outputs
the year, month, day, day of the week (0= Sun, up to 6=Sat), hour, minute and seconds. All outputs are
Unsigned Integers. This function is especially useful when used with the CurrentTime function.
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