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Thanks guys! I changed the velocity settings and DPLL from -50us to -200us,
and added acceleration to my multi_mpg.hal and now it’s running like a clock.

I’ll add a selector switch for resolution 0.1 0.01 0.001 and a switch for incremental & Continuous jog later.

For now I need to fix limit switches, I read somewhere that only 1 switch per axis was good enough because softlimits will protect against overtravel in other direction.

I think I’ll make the machine home X- Y- and Z+ and then make X,Y jog back 50% of total travel so that the table center line up roughly with spindle center line.

I was hoping @tar_san could post his files, as he indicates he got homing with external limit and origin switches working. I had thought I had homing figured out back in January, but discovered it was only working for Z index pulse homing, not external switch homing. I then had to set the project aside for six months due to a high priority consulting project, and am back on my LCNC ethercat quest again.

-- Ralph

Yes, that should work.

You can use pncconf or MesaCT to created a configuration for the 7I92.

You can use a similar daugtercard if the Benezan card is not supported. 
 

Hello,

After some research, I came to the conclusion that a 7i92t could replace a parallel port. My old computer died and I purchased a mesa card and attached it to a computer running LinuxCNC 2.9.4. I flashed the 7i92t_benezanx2d firmware following suggestions in another thread. 

I'm trying to control a very simple CNC Lathe by Taig. The signals that it requires on a parallel port are:

ESTOP - Pin 1
XDIR - Pin 2
XSTEP - Pin 3, Inverted
ZDIR - Pin 4
ZSTEP - Pin 5, Inverted
SPINDLE - Pin 16. Just ON-OFF, no speed control.

Is it possible to make this work with a 7i92t? 

I'm attaching the parport .ini and .hal that I was using.

Thank you in advance.
 

just to be clear, the stepper motors do run when using the stepconfig wizard, the question I would ask is, will the joints Y, A run in tandem from the LinuxCNC job interface? Does the application recognize the two as one joint and move them accordingly.

Yes, if  they were selected as tandem axis during configuration.

They have single turn absolute encoder.
I don't think its a motor issue because all of them do it exactly the same, or they are all fine someimes. I put together a better b450 motherboard with a ryzen 3200g. Seems better than the $0.50 HP motherboard already. I think it does have realtek chip so I have an Intel card to stick in it too.

jimmyrig, I am very new to this and do not know much about altering the g-code, sorry not sure what to do there.

The Premier Plasma table table and computer setup all worked great when it was windows. The computer died and I chose to go the linuxcnc rout with CNC wood router. I did not know this was going to be a 2+ year setup. I would have sold this thing and bought a small wood router setup with everything pre-installed ready to go.

Now

CNC Interface Board ST-V3, and 4 WANTAI DQ542MA drivers for X,Y,Z,A from wantmotor.com
Low Profile Dell G1FN2 25 pin PCie  1-port IEEE1284 Parallel PCI Express Board.
Stepper motor Model: WT57STH115420A-X1-7000 there are 4 total.

just to be clear, the stepper motors do run when using the stepconfig wizard, the question I would ask is, will the joints Y, A run in tandem from the LinuxCNC job interface? Does the application recognize the two as one joint and move them accordingly.

Forgot to also include the nc_subroutines.

In manual_change.ngc (see attached zip file) there  are the lines:

; probe tool length
M64 P  #<_ini[pins]probing> ; turn on probing led

cat gladevcp.hal:

net tool-change  motion.digital-out-00   gladevcp.change-led
net tool-changed gladevcp.changed        motion.digital-in-00
net toolno       motion.analog-out-00    gladevcp.number


net probing        motion.digital-out-01  gladevcp.probing-led
net enable         motion.digital-out-02  gladevcp.enable
# net probe-contact  gladevcp.probe-contact motion.probe-input
# net probe-contact  gladevcp.probe-contact motion.probe-input

net reftool        gladevcp.reftool       motion.digital-in-01

net reflen         motion.analog-out-01   gladevcp.reflen
net currlen        motion.analog-out-02   gladevcp.currlen

I think the signals and pins for the lines with "net probing " and "net enable" are incorrect.

What to set here?
greez
chris

 

Gautham wrote:

Hi PCW,

I found a card locally that seems similar to the Sainsmart breakout you had mentioned. I'll add the link below. It says its for Mach3 and LinuxCnc, would this work with my Mesa 7i96s. Thanks so much for your help. Interface Board CNC 5 Axis
 

Yes, that looks exactly like a Sainsmart ST-V2 so 7i96s_5abobd.bin firmware
will work with that.

sivaraj wrote:

Any chance you used program numbers O9xxx or O8xxx .
 

No, from 5000-9000 are subroutines.

sivaraj wrote:

It should be in EDIT mode and EDIT key enabled.
 

Yes, of course.

sivaraj wrote:

Could you able to select different program to foreground or not? only the foreground program Number will run in Auto.
 

Yes, i can choose any existing program, and no, this one runs everything from the first program in memory, as noted in the manual.
This i understand why, it is a fully automated machine, so can have multiple programs run consecutively, for different materials and cuts.
-
My conclusion is there must be some setting that enables deleting those files/programs as a safety feature as not to accidentally delete them, i just have to find it.
Again, having the manual for the old control while the machine has new controls causes much more confusion than help.

That looks nice now!

Finally Fixed! Before and after pics attached.   



 

Hi all
After a couple of years, I am finally back and ready to making chips. I have a router, use steppers on parport. Linuxcnc is 2.9.4, debian:

Linux cnc0 6.1.0-35-rt-amd64 #1 SMP PREEMPT_RT Debian 6.1.137-1 (2025-05-07) x86_64 GNU/Linux

The router works, I can cut stuff etc. not the problem. The job that I want to do soon requires quite a few tool changes. So far I did it using the dowel method, but that is very time consuming. Sure an automatic tool changer would be perfect, but that's up for in a later stage. For now I have a tool length sensor, that I would like to use with my collet spindle to get tool length set after a manual tool change.

When I run tcdemo.ngc:

- goes to change position
- when I hit "Tool change complete", goes to zmax, tool sensor x and y, starts going towards the sensor.
- As soon as the sensor is touched, I get "Probe tripped during non-probe move" and program is stopped

How can I get over this?

I attach the relevant files in zipped folder "toollength_problem.zip"

Greez
chris






 

Hi, can you detail how you managed it, since other users have had problems? I'm having problems with rtai-modules-5.4.290_5.3.3-linuxcnc_amd64.deb
Another detail is that when I try to remove linuxcnc, I get another error. It says: Sub-process /usr/bin/dpkg returned an error code (1)