Messages

131

General Mach Discussion / Re: New guy frustration LOL

« on: April 03, 2019, 10:35:34 AM »

Where in Michigan are you? I'm in the northern Detroit suburbs.

132

General Mach Discussion / Re: New guy frustration LOL

« on: April 03, 2019, 10:34:15 AM »

I can't guarantee that it will, but I do have a set of alternate macros without the GetVAR() that seem to work for most people with Chinese controllers. They are available for download separately on my site.

133

General Mach Discussion / Re: New guy frustration LOL

« on: April 03, 2019, 10:15:41 AM »

His assumption that all GetVar(NNNN) functions are NOT supported is probably NOT CORRECT.)

Or maybe it is. 

Gerry. On your signature line, you have listed a 2010 screenset. What is that?

It's a different screen for Mach3. It also comes with macros that automatically zero the tool after a tool change. Click the link.

134

General Mach Discussion / Re: New guy frustration LOL

« on: April 03, 2019, 09:08:31 AM »

His assumption that all GetVar(NNNN) functions are NOT supported is probably NOT CORRECT

I have several thousand people using my 2010 screenset, and a large number of them with Chinese motion controllers find that the GetVAR is often not supported by most chinese controllers. I do not know which ones specifically do or do not.

ZProbePos = GetOEMDro(802)


Should work with all of them.

If it works, there's no need to change it. If it doesn't, then make the switch.

135

General Mach Discussion / Re: New guy frustration LOL

« on: April 02, 2019, 07:24:36 PM »

Change this:
ZProbePos = GetVar(2002)

To this:
ZProbePos = GetOEMDro(802)

136

General Mach Discussion / Re: Stepper motors that shudder.

« on: April 02, 2019, 03:17:55 PM »

You won't find any drives that can handle 100V DC. I've seen a lot of people run those motors at 72V, with an 80V drive.

Another option are some Leadshine drives that run on AC, and don't need a DC power supply. I believe that they actually supply over 100VDC, but they're not cheap.


Are you saying it used to work fine, then something changed? How fast was it running before?

How fast do you want it to go?

137

General Mach Discussion / Re: New guy frustration LOL

« on: April 02, 2019, 10:46:57 AM »

Then make sure you do NOT use a macro that has GetVAR() in it.

138

General Mach Discussion / Re: New guy frustration LOL

« on: April 02, 2019, 09:36:04 AM »

Are you using the parallel port, or a motion controller?
If a motion controller, which one.

Most chinese motion controllers do not support the GetVar command properly, which most autozero macros use.

139

General Mach Discussion / Re: Stepper motors that shudder.

« on: April 01, 2019, 07:03:44 AM »

Most 425oz Nema 23 motors really need close to 100V to get the best performance out of them. They just can't spin very fast with 36V. And the 5mm pitch screws require high rpm to get any speed.
You need the lowest inductance motors you can find, preferably around 2mH or less. And run the highest voltage you can.

140

General Mach Discussion / Re: Bad Circles

« on: March 31, 2019, 04:46:28 PM »

1600 oz motors are the worst possible choice, and 5mm pitch ballscrews are not far behind.
Those motors lose most of their torque as soon as they start spinning, and the 5mm pitch screws require them to spin fast.
What drives are you using, and what voltage are you running them at?

Why it only stall while cutting circles would lead me to think that there's some binding in the machine somewhere.