PMDX Forum

General Category => Parallel Port breakout boards, motherboards, and dedicated accessories => Topic started by: lthomps on September 20, 2016, 12:33:18 PM

Title: Connecting PMDX-126 to ESS
Post by: lthomps on September 20, 2016, 12:33:18 PM
The instructions say "Connect the PMDX-126 to the smoothstepper using one or two 26-pin female to female ribbon cables"  It doesn't further expand on this.  Should I be using one or two.  My setup is as follows and I plan to draw 5V from the ribbon cable to power the ESS.

Setup:

PMDX-126 (Rev C)
PMDX-134
ESS
Title: Re: Connecting PMDX-126 to ESS
Post by: Steve Stallings on September 20, 2016, 01:35:49 PM
The PMDX-126 can operate with a single cable to the SmoothStepper, but
using the second cable will provide 4 more inputs and 4 more outputs
that show up on J11 and J5 of the PMDX-126 respectively.

The Ethernet SmoothStepper draws too much power to recommend powering
it from the PMDX-126. It can work if you do not have a PMDX-107 or any sensors
pulling power from the PMDX-126, but an independent regulated 5 VDC power
supply for the ESS is recommended. The PMDX-126 was designed at a time when
only the USB SmoothStepper existed and it draws much less power.
Title: Re: Connecting PMDX-126 to ESS
Post by: lthomps on September 20, 2016, 02:56:36 PM
Steve:  Thanks.  I just ordered a few cables from you guys about an hour ago.  I wil get it set up with the one cable I have until the new cables arrive.   Can you recommend a regulated 5V power supply?  Thanks in advance.
Title: Re: Connecting PMDX-126 to ESS
Post by: Steve Stallings on September 20, 2016, 03:22:03 PM
Jeff at Soigeneris does a good job of supporting SmoothSteppers so we recommend him.

http://www.soigeneris.com/meanwell_ps_05_power_supplies-details.aspx