Counter Input mode
The following describes the counter input mode.
Input Method | A Phase Input | B Phase Input | Up/Down |
1 Phase 2 Multiplication | Direction Input (Low Active) | Pulse Input | When A phase is low : Up Count When A phase is high : Down Count |
1 Phase 2 Multiplication | Direction Input (High Active) | Pulse Input | When A phase is high : Up Count When A phase is low : Down Count |
2 Phase 2 Multiplication | A Phase Pulse Input | B Phase Pulse Input | When A is antecedent to B : Up Count When B is antecedent to A : Down Count |
2 Phase 4 Multiplication | A Phase Pulse Input | B Phase Pulse Input | When A is antecedent to B : Up Count When B is antecedent to A : Down Count |
1 Phase 2 Multiplication (Low Active)
The increase / decrease direction of the count is dependent on the A phase input state.
1 Phase 2 Multiplication input method is not recommended for a system that requires a frequent change in direction because count value is made by A phase signal. For a precise measurement, 2 Phase 2 Multiplication or 2 Phase 4 Multiplication should be used.
1 Phase 2 Multiplication (High Active)
The increase / decrease direction of the count is dependent on the A phase input state.
1 Phase 2 Multiplication input method is not recommended for a system that requires a frequent change in direction because count value is made by A phase signal. For a precise measurement, 2 Phase 2 Multiplication or 2 Phase 4 Multiplication should be used.
2 Phase 2 Multiplication
The count is processed when the input signal of the A phase changes. The increase/decrease direction of the count is dependent on the state of the phase B signal at the moment when the A phase signal changes.
2 Phase 4 Multiplication
The count is processed each time input signals for both A phase and B phase change. The direction of the changing signal and state of the opponent signal determine whether to increment or decrement the count.