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So which mesa board will I need as the one i have is 

Awesome thank you, I'll update and check that out tonight. 

I don't want to push my luck but would it be possible to have a dual timer plugin? It would be for lube pumps mainly, so generally they turn on when the machine starts, run for 10 seconds then off, and turn on for 10 seconds every 20 minutes after that. 

I guess the blink could be modified for longer frequency but both the on and off time needs to be adjustable.

Cheers.
Russell.

Hey guys I have been having a hell of a time trying to get closed loop pid tuning going, which i've done before pretty easily.The Z Axis seems to require over 500 P in order to have proper cmd-pos and fb-pos being in line or on target.No matter what I do I seem to get this crazy drift once im done pressing the job button.Maybe someone can help out?I have tried tuning to no end. The Z Axis has a shock which creates resistance from it falling downwards.Maybe my scale is incorrect or something else?The Servo Amplifiers use Digital PWM/DIR

   

the report from uname -a is
Linux Linuxcnc 6.1.0-30-rt-amd64 #1 SMP PREEMPT_RT Debian 6.1.124-1 (2025-01-12) x86_64 GNU/Linux

The 7I92 is intended to work with a separate breakout/daughtercard that
does things like buffer step/dir signals, accept 24V input signals from switches
etc etc.

You choose firmware that matches your breakouts (daughtercards) pinout.

When this is done, things like stepgens will be on the breakouts stepgen pins
and will be in a standard order like:

0  X
1  Y
2  Z
3  A
4  B

As long as you choose a similar daughtercard in pncconf or MesaCT, the
configuration should be usable. If the configuration utility does not have
a exact daughterboard match, there may be small details like GPIO pin
assignment for things like limit switches or spindle-on that require a
bit of hand editing of the hal file.

If you have a Benezan breakout, a G540 configuration should be close.

Thanks PCW. Sorry for the noobiness: I'm confused by the "daughterboard" terminology. I was hoping to be able to connect the DB25 male connector that comes from the lathe's control box directly into the DB25 female connector of the card. I'm confused because when I tried to use pncconf, I'm always asked about a daughterboard.

Is it correct to assume that in this case the daughterboard is the male connector from the lathe?

The benezan is not listed as firmware in the pncconf utility. Is it correct to assume that a firmware that has stepgens on pins 3 and 5 works? Or are there other criteria for choosing a firmware? 

i test it again.. 5v on pwm in gives 8-9v..same as from mesacard.. with 1khz 2khz and 3 khz..

i try it with 5v from a powersupply...

i think i must build a own circuit,,,,

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.