Chapter 5 Memory and Parameter
4) PHASE A/B (x1)
Add operation is performed in case of the increase in A phase pulse when the phase of A phase input pulse is ahead of B
phase input pulse, and subtraction operation is performed in case of the decrease in A phase pulse when the phase of B phase
input pulse is ahead.
5) PHASE A/B (x2)
Count operation is performed when both increase and decrease in A phase input pulse. Add operation is performed when
the phase of A phase is input ahead of B phase, and subtraction operation is performed when the phase of B phase is input
ahead of A phase.