Option

Determines how each channel is counted.

Code	Description
0	X1 - Counts will increase on rising edge of Channel A when Channel A leads Channel B. Counts will decrease on falling edge of Channel A when Channel B leads Channel A.
1	X2 - Counts will increase at each rising and falling edge of Channel A when Channel A leads Channel B. Counts will decrease at each rising and falling edge of Channel A when Channel A leads Channel B.
2	X4 - Counts will increase at each rising and falling edge of both channels when Channel A leads Channel B. Counts will decrease at each rising and falling edge of both channels when Channel B leads Channel A.

Type: Constant