Just trying to connect these two steppers to mach3 . Have to have something wrong.  Do you guys have settings for the 85bygh450d-008 stepper connected to DQ860MA to a generic "mach3 interface board"
I cant get them to move at all really. Few connections are as below:
red A+
green A-
YellowB+
BlueB-
Pins are set to X 2, 3
Z 6, 7
^steplow

25000hz

estop 1, 10 active low

motor tune
1600 400 200 0 0 on both

Follow wiring diagram at:
https://www.aliexpress.com/item/EU-Germany-Free-Shipping-1Axis-Nema-34-Stepper-Motor-878OZIN-motor-Driver-DM860A-peak-7-8A/1390801120.html

You did not connect Enable
One side is connected ti +5V and other?

on your Photo it Looks like ENBL+ is connected to PC5V

for a first try i would connect ENBL- to PCGND, and if it is working to a free OUTPUT of BOB and use the OUTPUT
for the enable.

I have small 3axis cnc with nothing connected to enable+ and - drivers.. but i think that is ok if your interface board shares the same power supply as the drivers. My Interface board is on its own 12v supply and the drivers on the 60v supplies. So imagine my problem is the power and ground setup. I guess I do need to use the enable+ and - then or something along those lines. Will try a few things. Thanks

from this Manual:

https://www.factorydaily.com/fdattachs/fdattachs7/112716014424312.pdf

Yea I had it connected to Enable+ which is all it sounds you needed to do. It wasnt working but the motors were like powered on and holding position or locked. Just couldnt get mach3 to run the motors.

I connected the Enable- to pcground and it didnt help.. the motors unlocked and spun by hand free like they were off.
Wish I had a extra "mach3 interface board" just to test. Ill prob order one or two up ha.

I peaked at this video and its the same parts for the most part and works for him so not sure what my issue is.
https://www.youtube.com/watch?v=8j9oOgNIbJc

I put the Enable- on driver to pin14 on IB and in Mach3 Output signals, set enable1 to port 1 pin 14 and checked green with no changes as if I just left enable- on drive disconnected.

I can hear the motors kinda respond with jog, but no major movement at all.

Found this video for the 5axis mach3 interface board... double checked everything for normal new setup.
https://www.youtube.com/watch?v=rcUoUkdcE18

I can hear the motors kinda respond with jog, but no major movement at all.

Please make sure that the microstep per rev at the DM860A are set to 1600 and nothing higher.
see attached