> On 2019-01-08, at 22:05, Gerrit Heitsch <gerrit@laosinh.s.bawue.de> wrote: > >>> A drive that turns on the motor without the drive select line being active too has a design flaw. Properly designed drives would let you control the motor only if the DS line is active too. >> That would require you to interrupt communication with one drive while starting or stopping the motor on another. >> As starting a motor takes an appreciable amount of time, it makes sense to overlap them. >> If starting the motor while the drive isn't selected causes problems, then that is a design error. > > It doesn't cause problems, it just means that you need 2 control lines per drive, one to select the drive and one to control its motor. AFAIR the common approach to the start-stop issue was a motor-off delay allowing consecutive accesses not to wait for the motor to spin up again. -- SD! - http://e4aws.silverdr.com/Received on 2019-01-09 12:00:29
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