Advanced Search

Hi, there's some additional config parameters that can be used to configure the DMA stepgen. "Step Length", "Step Space", "Dir Hold" and "Dir Setup".

From the HBS86H data sheet:

PUL: pulse width should be longer than 10μs
DIR: signal should be ahead of PUL signal by 5μs at least

Therefore I'd suggest these settings in your config.txt as a starting point.

"Step Length": 10
"Dir Setup": 5

The normal stepgen runs at 40Khz so most drivers are happy with the step form being generated.

Seems easy enough, the board has all the pins written on it, so wire a power supply, get an old PC with parallel port and install LinuxCNC from the downloads page, wire the Xclk and Xdir and the rest of Y and Z, test.

Getting this working again.
Poor Phil has been sitting still for 6 years.
I dont know why its named phil.

Its a "training machine from back when.
real solid. Looks skimpy, but it suprised me when i got to test run it.

 

The hal/ini files look basically OK

If you start LinuxCNC, enable the spindle, and set a say 1/2 way up spindle speed

Then running this command in a terminal wndow should provide debug information to post here:

halcmd show all | grep spindle


 

PCW wrote:

Standard 7I96S firmware has 4 built in MPG quadrature counters
overlaid on the first 8 isolated inputs. This means you do not need
to decode individual inputs (which is important since they are typically
only read at the 1 KHz servo thread rate)

The MPG counters have names like:

hm2_7i96s.0.inm.00.enc0-count
hm2_7i96s.0.inm.00.enc1-count
hm2_7i96s.0.inm.00.enc2-count
hm2_7i96s.0.inm.00.enc3-count
 

That's great news.

Thank you