Stepcraft M700 with 7i92TM
- xkonni
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20 Dec 2025 00:23 #340325
by xkonni
Stepcraft M700 with 7i92TM was created by xkonni
Hello! After fiddling with uccnc on my Stepcraft M700 for a while I thought linuxcnc does look good.
Unfortunately I have lots of troubles to get things up and running.
The uccnc config does not look overly complicated:
Or so I thought. Putting all this in pncconf does leave me with a non-working config, the axes just click when trying to move them. It seems that my machine has swapped dir and step pins but the firmware does not allow that.
After some trial and mostly error I found this:
- If DB25 Pin 2 is left disconnected ("open"), the spindle starts immediately
- The Y-axis Step signal is on Pin 6, not sure about the Dir
- The Z-axis Step signal is on Pin 8, not sure about the Dir
But I fail to make sense of it or get anything else to work. Did search through for forum for 7i92 or stepcraft machines, no luck so far. Wrong keywords maybe? Added my config, any help is appreciated!
Unfortunately I have lots of troubles to get things up and running.
The uccnc config does not look overly complicated:
Setting X-Axis Y-Axis Z-Axis A-Axis
Step Pin Pin 3 Pin 5 Pin 7 Pin 9
Direction Pin Pin 2 Pin 4 Pin 6 Pin 8
Steps per Unit 160 160 320 480Or so I thought. Putting all this in pncconf does leave me with a non-working config, the axes just click when trying to move them. It seems that my machine has swapped dir and step pins but the firmware does not allow that.
After some trial and mostly error I found this:
- If DB25 Pin 2 is left disconnected ("open"), the spindle starts immediately
- The Y-axis Step signal is on Pin 6, not sure about the Dir
- The Z-axis Step signal is on Pin 8, not sure about the Dir
But I fail to make sense of it or get anything else to work. Did search through for forum for 7i92 or stepcraft machines, no luck so far. Wrong keywords maybe? Added my config, any help is appreciated!
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- PCW
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20 Dec 2025 02:12 #340327
by PCW
Replied by PCW on topic Stepcraft M700 with 7i92TM
7i92t_benezanx2d.bin firmware will at least have the first 4 stepgen pinouts correct
so that will get you a bit further.
To get the stepcraft configuration fully working may require a new firmware configuration,
at least to get the PWMgen on the correct pin. Do you have a list of all DB25 pin functions?
so that will get you a bit further.
To get the stepcraft configuration fully working may require a new firmware configuration,
at least to get the PWMgen on the correct pin. Do you have a list of all DB25 pin functions?
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