Tandem Axis on 2.8

I was running my 3 axis router linuxcnc 2.7 on Debian Wheezy with 1 stepper motor per axis.
I've replaced it with a new router which has a tandem X-axis - but kept the same control system (using Mesa 5i25 + 7i76 card combo) adding one more stepper drive. I've upgraded the PC to Debian Stretch & linuxcnc 2.8 to use the gantry squaring feature.

I used Pncconf to generate the HAL & INI files. The Z & Y axes home and jog properly but I can't get the tandem X to move or home. When I click "home all" in the Axis GUI the DRO for X changes as if the axis was moving but there is no actual movement.

I've attached my HAL & INI files & would be grateful if anyone could point out anything I have overlooked or done wrong. These files are as generated by Pncconf - except I deleted "kinstype=both" from the following line:

Thanks for your help,
Nathan

From a quick glance i can not find anything wrong with the files, but there are some things you can change to make sure the drives will work properly, like setting the step space and step length to 5000, although if you are using the same drives for all axis it should work as is.
Just to be sure, the X drive should be wired to TB2 pins 1 to 6 and X2 drive should be wired to TB2 pins 19 to 24.

Many thanks Tommy - that worked!

I changed step space and step length to 5000 - the drives are DM542T.

Strangely the old shorter settings for step space & length worked when I tried a dummy configuration with one motor per axis (XYZA) - but not when two motors were in tandem.

So I can confirm that the PnCConf generated HAL & INI files worked perfectly without any further editing required.

Nathan

Nice, thanks for reporting back.