Messages

2491

General Mach Discussion / Re: Wittsun 6040Z USB windows7

« on: May 18, 2019, 03:20:17 PM »

Hi,
can you post a picture of the back of the controller box where the cables plug in?.

Its quite common for Chinese controllers to use a USB cable from the PC just for a power supply to the breakout board.
The USB cable itself carries no data. The data is carried by the DB25 parallel port cable.

Its also possible that the controller is a genuine USB controller in which case it will still draw power from the USB socket
of your PC but also trajectory data which will be converted into pulse streams by your controller. If your controller
is of this type then the parallel port test you posted earlier is totally superfluous. In fact it suggests that Mach3 is using
the parallel port driver as motion control .dll when in should be using your controller .dll, and that is a fault.

Either way the confusion will be relieved if you post a picture of the cables from the PC to the controller.

Craig

2492

General Mach Discussion / Re: Wittsun 6040Z USB windows7

« on: May 18, 2019, 02:16:11 PM »

Hi,
I'm confused your post is titled 6040 USB and yet you have posted a picture of DriverTest.exe which is for a parallel port???

Is the controller USB input or DB25 parallel port input?

Craig

2493

General Mach Discussion / Re: Can't Install Mach3 on my PC

« on: May 18, 2019, 02:11:45 PM »

Hi,

Also, I have noticed that every now and then my machine goes haywire and wont move or spindle wont turn on. I reboot the operating system and everything works again. Do others have this problem ?(I have WinXP communicating through a USB cable)

Classic symptoms of electrical noise breaking USB communications. Ethernet is a better solution for noise immunity.

Craig

2494

General Mach Discussion / Re: Do you use a Charge Pump?

« on: May 18, 2019, 05:26:34 AM »

Hi All,
kool...we are starting to get some numbers.

I think we all know what a  charge pump is and what its supposed to do but what I wanted to know was how
many can be bothered with it.

I hope more people will vote.....the more who vote the more illuminating is the result.

Craig

2495

Mach4 General Discussion / Re: Servo spindle stops briefly - How do I diagnose problem?

« on: May 17, 2019, 10:09:08 AM »

Hi,
acceleration is proportional to torque.

Angular accel (radians/sec²) =Torque (Nm) x I (first moment of rotational inertia, kg/m²)

In a servo the torque is directly proportional to current and related to each other by the constant K_A, a figure
of merit of any given servo.

torque (Nm)= I (current,  Amp) x K_A (Nm/Amp)

Even if the DMM does not have a max torque (and therefore acceleration) setting it will certainly have a max current setting.
It is the norm to set the max current (and therefore torque/accel) to be 10% higher than the maximum acceleration equivalent
in Machs motor tuning. Therefore the max accel will still be given by Machs motor tuning but the drive itself will limit the torque
further at  some greater figure.

Craig

2496

Mach4 General Discussion / Re: Spindle RPM DRO doesn't work after migration to Build 4162

« on: May 17, 2019, 09:50:57 AM »

Hi,
before you updated Mach4 did you have an individualized copy of your screen set?

If not...and you were using wx4.set for example, when you updated you also got a fresh copy of wx4.set which would
have overwritten your original copy. I suspect that you had edited the original screen set to get the DRO to work but
that code is now gone.

https://www.machsupport.com/forum/index.php?topic=41078.msg269654#msg269654

You might get lucky and find a copy of the edited screen set still on your PC, but if not its lost and you'll have to do it again.
This time make a copy of your preferred screen set and give it an individualized name. Make that your screen set in your
profile and any edits to it will be retained across subsequent Mach builds.

Craig

2497

General Mach Discussion / Re: How do you apply a different offset from home on a slaved axis?

« on: May 16, 2019, 03:07:02 PM »

Hi,
I suspect that Mach4 offers features you can use for this purpose.

Like Mach3 you can slave one motor (in fact up to four motors) to another, the master. Like Mach3 the slave motors are
anticipated to have the same steps/per, accel and velocity as the master.

You can however programmatically un-link the motors. Say as part of the homing routine a slave motor can be temporarily
unlinked from the master, jiggled back and forth say and then linked together again. The slave motor does not have its own DRO
and it is less clear to me that it could have a separate offset, as an offset is associated with an axis, ie a master AND its slaves.

Still its worth experimenting. You can download Mach4 for free and try it out. If you don't load a motion control plugin
but use the Sim(ulator) Motion plugin the Demo version is time unlimited. If you load a motion plugin like the ESS
plugin for instance then Mach4 Demo will run unrestricted for six minutes before requiring a reset.

If you do want to have a look then in the API.chm document you might have a look at these functions:
mc.mcAxisUnmapMotor()
mc.mcAxisMapMotor()

Craig

2498

Mach4 General Discussion / Re: Mach4 TURN screen set

« on: May 16, 2019, 02:34:38 PM »

Hi,
to my knowledge there is only one lathe screen set, wxLathe.set, that is issued with Mach4.

No doubt there are many individualized lathe screen sets out there but guess most of them started out as wxLathe.set variants.

Craig

2499

Mach4 General Discussion / Re: how to press a button within a script

« on: May 16, 2019, 02:04:30 PM »

Hi,
not quite sure what you mean...'from within a script'?

If you are running a Gcode job and you call a macro. m100 say. Is this what you mean 'while running a script'?
If so the motion planner is under control of the Gcode interpreter and you can't jog.

To my knowledge Mach has always been this way.....you can run code OR you can jog but you can't do both at once.

Craig

2500

Forum suggestions and report forum problems. / Re: Registering to forum Captcha sucks

« on: May 15, 2019, 02:43:09 AM »

Hi,
I agree.

Craig