Questions: Mesa 7I92 Leadshine MX4660 4-Axis Step

I plan to use a Mesa 7i92M and a Leadshine MX4660 4-Axis Stepper Driver. The computer is an Intel NUC running the real-time kernel using a dedicated Ethernet to connect back-to-back to the Mesa card; I'll be using linuxcnc-uspace.

Can I use the Hostmot2 file 7i92_MX3660x2D.bit for the MX4660?

Does stepconf work for the above combination?

For the 5V to power the 7i92M card, I'm using a USB "power stealer" cable from the Intel NUC's USB port since the DC power supply for powering the Leadshine/Steppers only supplies 36V DC. Is there a better alternative?

Which getting started resources (if any) are available? Anything else I should be aware of as I'm starting out?

Thanks.

If you look at the .pin file you can check to see if the pin allocations match.

Looks like the MX3660 bitfile supports upto 3 steppers, but the MX4660 supports up to 4. So although the pins match for the first three steppers,
there is no support for the fourth.

Is this something I can fix via configuration or do I need to get a new bit file from Mesa?

Output of "sudo mesaflash --device 7i92 --readhmid"

Relevant page from MX4660 spec (www.leadshine.com/UploadFile/Down/MX4660hm_V1.1.pdf)

I have another follow up question. Since pncconf does not work for the 7i92, are there starter .hal and .ini files that I can edit? Creating them from scratch seems like a daunting task for a beginner. I downloaded 7i92.zip from mesanet.com but that only has .bit files -- no .hal nor .ini. I'm looking for starter files that can control 4 steppers. Thanks.

it's far easier to make a config for 3 axis , and just copy across for the fourth
pncconf is only to get you started , once you have a config , used a text editor and hand edit from then on

freeby.mesanet.com/7i92step.zip
is a basic example hal/ini file set for the 7I92

You cal also run pncconf for a 5i25/probrfx2 setup and edit the resulting files
(changing the card name to 7i92 and the hostmot2 config line to include the 7I92s ip address)

Here is a test bitfile for the MX4660 (and the changed source file)
freeby.mesanet.com/7i92_mx4660.zip

Update: The new bitfile for the Leadshine MX4660 (after download and reload), shows 4 steppers on P2. Also, I used the .ini and .hal files as-is (except for changing the IP address of the 7i92 back to 192.168.1.121) and linuxcnc basically comes up.

Thanks for all the help.

On to the next phase. Can I test the stepper outputs of the 7i92 (watching the step/dir pins on a logic analyser, for example) without actually connecting the MX4660? Say if I use the jog controls I should be able to see the corresponding activity on the 7i92's output parallel port, correct?

Sure, normal step/dir systems are open loop so step/dir signals can be watched on P2 pins
Also the sample config has no limit switch or or estop logic so does not depend
on any input states to run.