Messages

171

General Mach Discussion / Re: Another dumb question

« on: January 29, 2011, 08:59:39 PM »

On all the CNC's I have worked on, the feed hold is instant, I have never seen a feed hold where the axis just slows down and stops when you press it, you shouldn't loose postion if using Dc servo's with pulse coders right..
Is this that way because of the stepper motors loosing step or something even though mine does it and I'm using DC servo's.
I wonder if there is a parameter to change it.
I must admit, I do like this mach3. I went to Camsoft last year, but $5000...for the CD

172

General Mach Discussion / Re: Another dumb question

« on: January 29, 2011, 08:06:01 PM »

Now I see I can put the value in the speed DRO. If I use output 5 for m03 and output 6 for m04, what about m05? is that internal and allready to go?
Another topic: whats with the feed hold. Why have feed hold and stop? the stop works like a feed hold should, the feed hold is a bit wishy washy, don't see the point of it.

173

General Mach Discussion / Re: Another dumb question

« on: January 29, 2011, 07:39:08 PM »

Sorry, I should have said I am using DSPMC with analog +- 10v.
I have found the the screen now showing the outputs to use for m03/4.
Still need to know if I can control the speed from mach if I turn on the spindle externally.
On Fanuc If you just press spindle start, It will will not run unless a command had been put in through MDI then he start push button will run the spindle from the last commanded speed.
Ray.

174

General Mach Discussion / Re: Another dumb question

« on: January 29, 2011, 06:54:37 PM »

If I am running my spindle externally with the VFD using for/rev buttons but then want to control the spindle through Mach, where is the mach3 output for the m03/04.
Do I have to use a separate pot to control the spindle when using it externally or can i use the mach3 spindle override?
Does it operate like other CNC's where it uses the last MDI commanded speed when operating the spindle externally.
Ray.

175

General Mach Discussion / Re: Another dumb question

« on: January 23, 2011, 09:14:04 PM »

With the 32 inputs I have to work with and after I use one limit switch for +&- overtravel for the 3 axis, then zero return switch on 3 axis and e/stop, then  few others, can I use the rest for my own use, and can I modify the screen set to rename the others to suit my needs.
Thanks.

176

General Mach Discussion / Re: Another dumb question

« on: January 23, 2011, 07:31:49 PM »

Thanks Hood, With this first project I guess i can use some spare inputs.
I am using 24v from the dspmc to bob, also the hand held pendant should tale care of a few buttons.
Thanks.

177

General Mach Discussion / Re: Another dumb question

« on: January 23, 2011, 05:14:47 PM »

I am using dspmc. What about the poykeys board. What does that do?
ray.

178

General Mach Discussion / Re: Another dumb question

« on: January 23, 2011, 02:05:33 PM »

Thanks Hood, but I'm still at a loss. Lets say just one momentary cycle start button, do I have to supply power to it (24v) and use an input? or where do I get my signal from to emulate the keyboard. I here about the poykeys board and stuff like that and I know I can use the xbox buttons with the usb connection but I just can't get my head around the PC, still thinking like Fanuc...
Ray.

179

General Mach Discussion / Another dumb question

« on: January 23, 2011, 01:46:47 AM »

Ok, if i want to use external switches for cycle start, feed hold, feedrate override, what is the simplest way to do that? I can use up my limited supply of inputs, Do I use the brain thingy, then do I need a modbus doodad.
Go easy on me. Ray.

180

dspMC/IP Motion Controller / Re: dspmc error download encoder polarity, and down load aborted.

« on: January 20, 2011, 10:41:59 PM »

I was zero and Max error I was 315 I think, I didn't put that # in there.
Ray.