Counter Up


The up-counter can be used to count the number of rising edge FALSE to TRUE transitions of the preceding logic and signal when a count has reached a maximum value. Each time the input CU is set to TRUE, the counter CV is incremented by 1, provided that CV is less than the maximum value PV. The output Q is set to TRUE when CV is greater than or equal to PV. CV is initialized to 0 when the application starts and resets to 0 when R becomes TRUE.