I decided to use two quad differential line receiver SN75173 to convert step and dir signals from DDCS3.1 unit to work with Gecko step drivers
Wish me luck... I will report here if success.
Administrator - Please add DDCS3.1 separate forum and move this topic there to help others.
Success. I put two SN75173 on a small perf board. I ran each axis +-STEP +-DIR signals from DDCSV3.1 to differential inputs.
This provided a +5 to to ground output that is compliant with the Gecko drives.
This board runs on a separate 5v supply. 5v from this supply also went out to each Gecko driver board on the machine (pre-existing wiring I did not want to change). The supply shares the same ground COM- for I/O on the DDCS.
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