LS CHARM Discrete input parameters

None -- No effect on the input value. The input state equals the raw state. If the DeltaV system cannot obtain a reading for the raw state in 10 samples, it sets bad status

Delay -- The input state turns On or Off after the raw state has been on or off for at least the configured time duration.

Glitch -- The input state change is held for at least the configured time duration. A change to the raw state during the hold time causes the input state to respond to the change after the hold expires and then hold again for the configured time.

Average -- The CHARM samples input 1000 times per second. When the Average option is selected the counter is incremented or decremented once per sample. When the input is True the counter is incremented. When the input is False, the counter is decremented. If the counter decrements to zero, the output is set to False and the counter ignores further decrements. If the counter increments up to the threshold, the output is set to True and the counter ignores further increments. If the counter is between zero and the threshold, the output retains its previous state. The threshold determines the amount of filtering: a threshold of one performs no filtering and a threshold of N requires a signal to be present for N accumulated samples before the output changes state.