Fig. 3-5: Incremental Counter: Single Mode; Fig. 3-6: Incremental Counter: Double Mode; Fig. 3-7: Incremental Counter: Quadruple Mode; Fig. 3-8: Incremental Counter: Direct Mode - Addi-Data MSX-E1701 Technical Description

Function description: Incremental counter inputs
a) Single mode
In single mode, if trace A of the incremental encoder signal is on "high", the system counts with each
rising edge of trace B.
b) Double mode
In double mode, the system counts with each rising and falling edge of trace B.
c) Quadruple mode
In quadruple mode, the system counts with each rising and falling edge of traces A and B.
d) Direct mode
In direct mode, the system counts with each falling edge of trace A, with input B serving as a gate
input. The system counts only if trace B is on "high".
Moreover, in direct mode, the direction of counting can be programmed through software.
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Fig. 3-5: Incremental counter: Single mode

Fig. 3-6: Incremental counter: Double mode

Fig. 3-7: Incremental counter: Quadruple mode

Fig. 3-8: Incremental counter: Direct mode

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MSX-E1701