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7I96S firmware with stepgen indexes 0,1,2 on isolated inputs 8,9,10

I figured 3 index inputs would be more generally useful and if you
just want 2 (0,1) indexes and need all 9 remaining isolated inputs
you can use  gpio.010 instead of inm.010




Note that there is standard firmware (7i96s_sdid.bin) that has all 5
stepgen index inputs on the P1 expansion connector (but these are just
unprotected 5V TTL inputs)

 

Here's another similar post:    forum.linuxcnc.org/qtvcp/40992-qtdragon-...tion?start=10#212164

I don't understand how or why var #5223 is being set to -321.00 in my VAR file. Makes no sense since my entire travel along Z is much less.

Still searching for a fix on this issue.

Setting tandem axes is done when homing. It is all covered in the documents under the heading "Homing Configuration"
You need to read it a few times before it sinks in.
each tandem joint needs a negative HOME_SEQUENCE

I would love to use NativeCam in LCNC as it seems like the best way to generate easy/moderately complex gcode for directly on the control.
Modeling the part and using CAM interrupts my workflow too much.

Keep posting here when you get it to work correctly

From inductive sensors, measuring from ballscrew pulley. Should be slow enough I think.

Here's the files.   I'll work on verifying the encoders shortly.  

The config is for metric units but velocities and accelerations seem to be set for imperial units as they are way to low for metric, max speed is 60mm/m as is.
Also, old config, so what version of LinuxCNC is being used, see the top border when LinuxCNC is running.

You can use backlash compensation for each axis/joint, see if that improves something.
Add to each joint in ini file:
backlash = 0.05
Or whatever that joint needs, and also add
Backlsh_velocity = 10
That value is units per second, so 10 is 600mm/m for metric or 600 inches/m for imperial ... that would be to much

See here:
linuxcnc.org/docs/html/gcode/m-code.html#mcode:m62-m65

You have clearly wrong limits set for your axes, see the [AXIS_l] sections of your ini file:

this here tells the controller that this axis can move one micron in the negative and 8 mm in the positive direction from the home position:
Also you seem to be missing the homing setup, but you use a rather old version of linuxcnc so I'm not sure how that was done in your particular version.

I would be grateful if you could give me a little more detail. I saw that synchronized movements can be made with M63 in the manual, but I could not find details.

IRQ to be set to last cpu. That had worked for me.

Its possible, but would need slow index inputs (at least 300 usec or so in duration)
what does you index signal come from?

Do you have 5V and field power on the 7I77

(four yellow LEDs and one red LED illuminated on the 7I77)

Also posting your hal/ini files may help

Good news.
I got it working in changing the control pins for Y-axis (from 3/16 original Y-axis, to 5/6 original A-axis) on the parallel port.
But it is really weird why 2.9.3 is not working in the original Y-axis config but the old config still works with this config.

Attached the original config. As said I just swapped 2 pins around...
btw. the old version I was running was 2.7.0 Pre, I did build them myself from sources.

Thanks a lot,
DeJe