Messages

8291

General Mach Discussion / Re: Power Supply upgrade 24-48 G540 the Bad Pins?

« on: November 09, 2009, 06:17:17 AM »

Pins 18 to 25 inc. are all ground.

Tweakie.

8292

General Mach Discussion / Re: Power Supply upgrade 24-48 G540 the Bad Pins?

« on: November 08, 2009, 05:32:42 AM »

Yes - that is the way to test the input pin functions - thanks Hood.

Tweakie.

8293

General Mach Discussion / Re: Power Supply upgrade 24-48 G540 the Bad Pins?

« on: November 08, 2009, 04:56:03 AM »

Sorry Hood the answer should have been No you can't Sir. (my first mistake of the day).

Tweakie.

8294

General Mach Discussion / Re: Power Supply upgrade 24-48 G540 the Bad Pins?

« on: November 08, 2009, 04:51:39 AM »

Yes you can Sir.

Tweakie.

8295

General Mach Discussion / Re: Power Supply upgrade 24-48 G540 the Bad Pins?

« on: November 08, 2009, 03:10:50 AM »

Using Parmon:-

With nothing connected to your PC parallel port, if you can toggle the state (by clicking on them) of the pins you suspect (the ones the limit switches were connected to) then your parallel port is OK and can be ruled out as being the cause of the problem.

Tweakie.

Update:- JigSaw please disregard this as it will not help identify bad input pins on the LPT. It is only for output pins (my mistake).

8296

General Mach Discussion / Re: Power Supply upgrade 24-48 G540 the Bad Pins?

« on: November 07, 2009, 02:30:17 AM »

Sounds to me like you may have blown the pins on your computer port with perhaps too high a voltage getting in there.
Test the parallel port input/output operation using Parmon which can be downloaded from here:-
http://www.geekhideout.com/parmon.shtml
That will at least rule out one possibility.

Tweakie.

8297

General Mach Discussion / Re: CNC drivers fighting...

« on: November 06, 2009, 09:06:00 AM »

To get the best results from Mach, it is like Rich has said, you should use a dedicated PC running Mach and nothing else. This way no problems will be experienced.

Tweakie.

8298

Show"N"Tell ( What you have made with your CNC machine.) / Re: Experimenting with my rotary axis

« on: November 05, 2009, 09:45:20 AM »

Looks very good to me too. Excellent work Greg.

Tweakie.

8299

General Mach Discussion / Re: touch plate question

« on: November 05, 2009, 03:04:05 AM »

There are quite a few explanations for use of the touch plate here on the forum but, if you wish, you can see how I set up my tool positioning here:-
http://www.cooperman.talktalk.net/files/17.htm

Hope this helps.

Tweakie.

8300

Show"N"Tell ( Your Machines) / Re: The Laser Project.

« on: November 04, 2009, 04:04:04 AM »

I have now constructed the header/expansion tank (which has been fitted to the rear of the laser tube enclosure) and an inline filter (fitted at the circulating pump inlet). The cooling system has been filled with antifreeze and is being tested for leaks (none so far, but don't hold your breath  ).
I was pleasantly surprised to find that the system cleared itself of the trapped air after the circulating pump had been running for approx. 15 minutes.

Now to make a start on the control electronics.

Tweakie.