Messages

211

General Mach Discussion / Re: Rotary Axis softlimits

« on: August 24, 2007, 05:58:16 AM »

I've now updated to the very latest version, my version was about a month old, and it now shows a check box for rotary axis limits.
I presume this means with a tick in the box the limits are activated?

Also I don't know if it's a bug but with the shortest path ticked a G0 move does indeed get the table to go the shortest path but a G1 move always goes round the whole table in the positive direction, even if the move is 0.1 degrees in the negative direction it'll take the table 359.9 degrees in the positive direction. Is it meant to do this?

Steve

212

General Mach Discussion / Rotary Axis softlimits

« on: August 23, 2007, 12:59:56 PM »

Hi all

I've done a search but didn't find an answer to the following questions.

I've converted my rotary table to stepper control, it's all setup in Mach 90:1 worm, 16 microsteps = 800 steps per Degree. Axis A setup as rotary, not sure about the degree box being ticked.

I'm having a problem with soft limits stopping the table and can't find how to disable them for the A axis, is it possible or does the degree box do this or do I just set the limit to 999999 (or whatever the limit is)

Also when using the rotary axis what does the F word do, does it set degrees or mm (tied in with the work peice dia setting)

thanks
Steve

213

General Mach Discussion / Re: Z Axis not zeroing to switch

« on: July 19, 2007, 07:37:47 PM »

Cables for mouses, keyboards, etc are shielded.

Get a 12 ft. extension, whack the ends off.

Lotsa pretty wires.

Ashby

I din't know that!

By the way shouldn't it be micees :-)

Ok I'm a little drunk.

Steve

214

General Mach Discussion / Re: Z Axis not zeroing to switch

« on: July 19, 2007, 04:42:07 AM »

Hi Hood

I'm couldn't find any shielded wiring so it's not grounded at either end.

Steve

215

General Mach Discussion / Re: Z Axis not zeroing to switch

« on: July 18, 2007, 03:53:45 PM »

Thanks Hood

Just came in to say I'd found it was signal noise.

I had a bit more time tonight so I went through it consistantly instead of last night when I'd just got them fitted and wanted to get them working immediatly :-)

The Z axis limit switch wires run with the Z stepper wiring for most of the distance back to the control box, I've run seperate wiring now. This was also the problem with the limit switch being detected when I have the home switches as limits as well.

I'm still getting intermitent noise on the X or Y when it's used as a limit but I'll try the debounce level or just run the wires through a different route.

My home switches are also the axis limits in the + direction hense the mention of + limits.

Thanks again
Steve

216

General Mach Discussion / Z Axis not zeroing to switch

« on: July 18, 2007, 12:23:33 PM »

Hi all

Quick intro, I'm new here and have a Denford Easimill converted to Mach 3 and micro stepping drivers.

Everything has been ok so far but last night I set up my home switches using the N/C contacts on 3 micro switches, all wired up and set the machine to home, it went the wrong way so I changed it back to home positive, my home is top right corner of the mill table.

Z axis moved up homed and off by the 3 mm as set, the same with the X & Y.

Now though if say I restart with the Z down any amount then try homing the Z moves up by a few mm and stops then the X & Y home properly, I can keep doing this until the Z actualy does hit the switch and then it all work correctly. Wierd.

Anyway I've tried setting it back up and also tried setting the home switches as + limits, and that doesn't work either, I just get a constant limit switch activated.

Is this something I'm doing wrong or is it a bug.

Mach 3 version 2.0.065.

Thanks
Steve