Re: [CAD_CAM_EDM_DRO] Re: Pacific Scientific Servo Motors and Drives

Chris Bruno wrote:

>>This is really simple. You take a gate package, such as the 74LS00
>>
>>
>and
>
>
>>use 3 gates for each axis.
>>
>>Direction signal goes to pins 1, 4 and 5
>>step signal goes to 2 and 10.
>>pin 6 is wired to pin 9
>>a negative-going step "one way" pulse comes from pin 3
>>a negative-going step "the other way" pulse comes from pin 8.
>>Ground pin 7, connect +5 V to pin 14.
>>
>>What this does is produce a complemented direction signal from
>>pin 6, and then AND the true and complemented direction signals
>>with the step pulse to produce step pulses going each way.
>>
>>If your software produces negative-going step pulses, then you need
>>to use a 74LS02 instead.
>>
>>Jon
>>
>>
>
>Thanks Jon! Do you think there would be any issues with time delay
>or pulse timing at 45 kHz?
>
>

Certainly not. These chips can go to 50 MHz, at least!

Jon