Help with 7i92T for just step and direction

Hi,

I'm new to LinuxCNC (and still pretty much new to CnC in general).  I have a Taig CnC I bought used off Craigslist that currently uses the MicroProto DSLS 3000 controller via parallel port and Mach 3 running under Windows XP.  It works, however, the PC I'm using is 20 years old and crashes quite regularly which messes up parts.  I have a 2013 iMac that I've installed LinuxCnC 2.9.2 on and I bought a Mesa 7i92T.  I want to just configure LinuxCnC to use the same pins for the parallel port (via the 7i92t) that were used in Mach 3.  This thread: forum.linuxcnc.org/39-pncconf/50339-sett...o-on-steppers#282890 looks very similar to my needs and so I went ahead and flashed the mx4660d firmware onto the 7i92t.  But when running PnCConf, I can't figure out the right combination of things to select to see tell the Wizard that I'm using the Mx4660d firmware (I only see option for the 7i76 or 7i77 daughter cards or g540x2).  I'm attaching a couple images of the pin settings I need just to give an idea.  Any help would be appreciated.  

Thanks,
Dean

That looks close to the PMDX 126 pinout

 

What I would do is:

1. Write the pmdx126 firmware to the 7I92t with

mesaflash --device 7i92t --write 7i92t_pmdx126d.bin --reload

2. Use pncconf's discover option to read the configuration data from the card

3. Set the number of stepgens to 4, pwmgens to 0, encoders to 0
and the press "Accept components changes"

Then assign stepgen 0 to X, stepgen 1 to Y, stepgen2 to Z, and stepgen 3 to A
 Then assign the desired I/O but note that pncconf uses the GPIO names
not DB25 pin names so you need to use the pinout file (7i92t_pmdx126d.pin)
that is included in the zip file to translate these
 

Thank you for the quick responses!! I'll give it a try this weekend.

Thanks,
Dean