PMDX Forum

General Category => SmartBOB controllers and dedicated accessories => Topic started by: Jawno on May 30, 2019, 01:36:22 AM

Title: newb question about wiring PMDX-424 board.
Post by: Jawno on May 30, 2019, 01:36:22 AM

Should I have my motors and drivers wired up to the PMDX-424 before I power it up the first time and before installing the USB cable? Can I power it up and plug in the cable with no wires connected and then connect them later?

Title: Re: newb question about wiring PMDX-424 board.
Post by: Steve Stallings on May 30, 2019, 01:47:25 AM

It is OK to connect your PMDX-424 to the computer and run Mach4 without your motor drivers or stepper motors attached.

Step pulses will still be generated and your DROs will react as if the motors were present because this is an "open loop" system.

You should leave the red jumper clip installed on the E-Stop input or replace it with a normally closed switch because the sample profiles expect the switch to be connected.