Generates a number output (result) based on a sine wave algorithm. min is the lowest number of the sinewave and max is the highest number of the sinewave. 
Period is in minutes and determines the amount of time it takes to complete one full cycle of the sinewave.  In the example below, the result will be a number between 70 and 90. The output will go up from 70 to 90 in 30 seconds; and then it will go back down from 90 to 70 in the next 30 seconds. That completes a full sinewave in a 1 minute period. The output is continuous.