Digital Microstep Driver DM556N
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Figure 3: Connection to PNP-type signal(common-cathode)
3.4 Timing Diagram of Control Signals
In order to avoid some malfunctions and deviations, PUL, DIR and ENA signals should observe
some rules, as following figure show.
Figure 4: Timing diagram of control signals
Remark:
(1). t1: ENA signal must be ahead of DIR signal by at least 5µs. Usually, ENA+ and ENA- should
be suspended.
(2). t2: DIR signal must be ahead of PUL signal falling edge by 5µs to ensure correct direction.
(3). t3: Pulse width is not less than 2.5µs.
