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  • Routerworks
  • Routerworks
20 May 2025 20:00
Replied by Routerworks on topic Calling next subroutine messes up offsets

Calling next subroutine messes up offsets

Category: General LinuxCNC Questions

"Then comes the dawn"!
Now I understand the difference between Axis' P0 and the others. Big help.

I just want to change the Z offset for the axis I am in. It seems that if I make a G54 offset change it affects the entire program. Moves the entire image.

The difficulty I am having is moving from the end of the 4th position of the first subroutine back to the start (first) position of the second subroutine (o103) and repositioning the Z axis.

Freecad may have added some unnecessary moves and offsets.
For example I don't understand G0 X0 Y0 F70.
Also don't understand why it adds G92 offsets at the beginning of the next set of subroutine axis.

Getting there. Greatly appreciate your help.
  • PCW
  • PCW's Avatar
20 May 2025 19:58
Replied by PCW on topic [SOLVED] MesaCT problems with 7i96 pwm spindle

[SOLVED] MesaCT problems with 7i96 pwm spindle

Category: Configuration Tools

Does that potentiometer on the PWM --> Analog module adjust the scale?
  • oddwick
  • oddwick's Avatar
20 May 2025 19:54
Replied by oddwick on topic [SOLVED] MesaCT problems with 7i96 pwm spindle

[SOLVED] MesaCT problems with 7i96 pwm spindle

Category: Configuration Tools

that is what i thought. it should just be a proportional voltage coming out, but there must be a small load on it because my pw
voltage drops about 0.5v when i plug it in and tye only way i can get 10v or close is to increase the input voltage to the module to 14v.

these are the new ones i have coming.
a.co/d/5rSxmMy
which is similar to tye board i have now.

i could just use rs485 to control the spindle, but this is a big machine and at least for now i use the same computer to control 3 machines and i dont want to have 2 cables running across the floor. i trip over one often enough, so i need to try and get this pwm running
  • Murphy
  • Murphy
20 May 2025 19:18 - 20 May 2025 19:19
Replied by Murphy on topic Remora - ethernet NVEM / EC300 / EC500 cnc board

Remora - ethernet NVEM / EC300 / EC500 cnc board

Category: Computers and Hardware

@ Thayloreing Looks like you have no Comms with the board. Which could be why you can't upload the config to the board. Look back in the posts there is steps there to change the IP address for the board to 10.10.10.10.

@scotta, have you tested the v5 boards with CSS ?. I'm having issues only in CSS mode. Signal keeps dropping when there is speed changes during CSS. Voltage newly drops to zero, once speed changes stop it goes to the required speed. I'm thinking it could be the 0-10v chips on the EC500's.
  • PCW
  • PCW's Avatar
20 May 2025 19:01
Replied by PCW on topic [SOLVED] MesaCT problems with 7i96 pwm spindle

[SOLVED] MesaCT problems with 7i96 pwm spindle

Category: Configuration Tools

Actually, the PWM --> analog circuit normally should not
care what the PWM input signal level is as long as it's enough
to drive the input circuit. That is, it should work identically
with a 4V signal as a 5V signal.
  • oddwick
  • oddwick's Avatar
20 May 2025 18:59
Replied by oddwick on topic [SOLVED] MesaCT problems with 7i96 pwm spindle

[SOLVED] MesaCT problems with 7i96 pwm spindle

Category: Configuration Tools

thanks tom for the words of wisdom as always. i have some new modules coming this afternoon and i will give those a go. ill also dig around and see if i have another 5v din psu floating around. i thought i had a 2a one somewhere here
  • oddwick
  • oddwick's Avatar
20 May 2025 18:55
Replied by oddwick on topic [SOLVED] MesaCT problems with 7i96 pwm spindle

[SOLVED] MesaCT problems with 7i96 pwm spindle

Category: Configuration Tools

250 mA is really marginal...

so what would you recommend?  am i under powering it? 
  • tommylight
  • tommylight's Avatar
20 May 2025 18:42
Replied by tommylight on topic [SOLVED] MesaCT problems with 7i96 pwm spindle

[SOLVED] MesaCT problems with 7i96 pwm spindle

Category: Configuration Tools

the 7i96 is powered with a dedicated 5v 0.55a psu. i adjusted the pot to 5.42v(i dare not go any more)

That is really, really not a good idea, 5V supply should be 5V+-5%, so 4.75V-5.25V.
Maybe Mesa can handle it, but i would not even try that without confirming first.
  • PCW
  • PCW's Avatar
20 May 2025 18:41
Replied by PCW on topic [SOLVED] MesaCT problems with 7i96 pwm spindle

[SOLVED] MesaCT problems with 7i96 pwm spindle

Category: Configuration Tools

250 mA is really marginal...
 
  • Aciera
  • Aciera's Avatar
20 May 2025 18:39
Replied by Aciera on topic Calling next subroutine messes up offsets

Calling next subroutine messes up offsets

Category: General LinuxCNC Questions

If you stop a subroutine (ie use the stop execution buttion) you are free to call another subroutine.

P0 just selects whatever WCS is currently active. If you want to change a specific offset system you would use P1 ... P9.

Yes axis gui's P0 issues G10 L20 P0 ...

If you need to change the Z offset for all operations regardless of WCS you would probably want to change the tool-offset instead.
  • Hastrh2o
  • Hastrh2o
20 May 2025 18:25
Retrieving parameters values was created by Hastrh2o

Retrieving parameters values

Category: Qtvcp

Hi,

I'm trying to retrieve several numbered parameters, but with a minimum of hal widgets. I know I should have tried to build a custom widget, but I never did it and thought it would be easier this way. I changed my point of view (using one hal widget per parameter), but I would like to know how this should have been written :
        ACTION.CALL_MDI("M68 E5 Q#1203")
        while not STATUS.is_interp_idle():
            time.sleep(0.1)
        self.w.paramEdit_MG_D.setText("{:3.1f}".format(self.w.lcdnumber.value()))
        ACTION.CALL_MDI("M68 E5 Q#1204")
        while not STATUS.is_interp_idle():
            time.sleep(0.1)
        self.w.paramEdit_MD_D.setText("{:3.1f}".format(self.w.lcdnumber.value()))

In postgui.hal I have :
net multivar   grimmui.lcdnumber <= motion.analog-out-05

The code is running, but don't do what I want. It seems lcdnumber.value() is not updated fast enough to have paramEdit_MD_D updated with the right text, both paramEdit_MG_D and paramEdit_MD_D are receiving the same text. The " while not STATUS.is_interp_idle():" does nothing.

Thanks
  • oddwick
  • oddwick's Avatar
20 May 2025 18:12
Replied by oddwick on topic [SOLVED] MesaCT problems with 7i96 pwm spindle

[SOLVED] MesaCT problems with 7i96 pwm spindle

Category: Configuration Tools

thanks jt, that was making me go bonkers trying track that one down. found that in one of my other machines configs and it worked!

as for the pwm voltages, i just got through checking everything and i shouldn’t have any load on the pwm at all. the 7i96 is powered with a dedicated 5v 0.55a psu. i adjusted the pot to 5.42v(i dare not go any more) and i get 5.31v between +5 and gnd and at 24k rpm which is max, i get same between gnd and pwm- when i have the cable to the vfd box disconnected. when i connect the cable it drops to 4.86v. is the converter actually pulling a load?  i can get close to 10v if i boost the input voltage to 14v which is within the range of the board, but is that just a hack or will that work?  or is the psu for the mesa board under powered? i saw that in a post that 250ma was enough without any loads. 

     
  • DarkPhoinix
  • DarkPhoinix
20 May 2025 16:15 - 20 May 2025 16:28
Replied by DarkPhoinix on topic Remora - ethernet NVEM / EC300 / EC500 cnc board

Remora - ethernet NVEM / EC300 / EC500 cnc board

Category: Computers and Hardware

I'd always recommend calculating the joint SCALE based on the hardware. ie steps per revolution of the stepper motor and then the leadscrew pitch etc. If the actual movement achieved is not correct I'd be suspicious of lost steps, especially if micro stepping.


the seller does not give me any documentation. The only things I have are:
Driver
Pulse/rev SW5 SW6 SW7 SW8
----------- ----- ----- ----- -----
Default    on on on on
800         off on on on
1600       on off on on
3200       off off on on
6400       on on off on
12800     off on off on
25600     on off off on
51200     off off off on
1000       on on on off
2000       off on on off
4000       on off on off
5000       off off on off
8000       on on off off
10000     off on off off
20000     on off off off
40000     off off off off

Stepper: Step angle1.8∘±5%

in the TXT file i have set: 
    "Thread": "DMA",
    "Type": "DMAstepgen",
        "Comment":            "Y - Joint 1 step generator",
        "Joint Number":        1,
        "Step Pin":        "P1_24",
        "Direction Pin":    "P1_31",
        "Step Length":        7,
        "Step Space":        2

Frame:
SFU2005 and SFU1605 ball screws Repetitive positioning accuracy: 0.05mm
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