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5-6 Operation MN1940
5.2.2.2 I/Oset tings view
TheI/O s ettings view shows two additional parameters for t he DSM:
ClockType
TheCloc k Type parameter configures the step and direction inputs for the type of inputsignals
beingsupplied to the mot or.
HStep/Diris thedefault setting. Awaveform s upplied to the step
input causes the motor to advance one step for each rising
edge.The direction input is heldeither high or low to determine
thedirec tion of motion.
HQuadrature requires a pair of waveforms, such as those
typically produced by an incremental encoder. The two
waveformsare at the same f requency but approximately 90°out
ofphase (i.e. ‘in quadratur e’). One is supplied to the step input,
theother to the directi on input. Eac hedge c auses the motor to
advance one step, with the direction being determined by the
relativetiming of the waveforms . Forexample, if the rising edge on the step input w aveform
isreceived befor e the rising edge on the direction input waveform, the motor will turn in one
direction. If the rising edge on the direction input is received first, the motor will turn in the
oppositedirec tion.
HUp/ Down requires a w aveform to bes upplied toeit her thes tep
inputor the direction input. If the waveform is supplied to the
stepinput, themotor will tur n in one direction. Ifthe wav eform
is supplied to the direction input, the motor will turn in the
oppositedirec tion.
ClockIOF
TheCloc k IOF parameter sets the frequency of the cloc k input filter. Valuesin the r ange 50 ns
to12.9 μs ( 10 MHz to 38.8 kHz) are available.
Step
Dir
Step
(CHA)
Dir
(CHB)
Step
Dir