Messages

121

General Mach Discussion / Re: Modbus spindle control questions...

« on: November 08, 2011, 02:22:21 AM »

I run a Hitachi via Modbus with brains.

Just forward and speed.   Had reverse going but deleted it because I never run reverse. (router spindle)

But I have not a clue about TECO.  The Hitachi manual is fairly comprehensive.

I have doubts that this will be of any help to you, but here is some info,

http://www.machsupport.com/forum/index.php/topic,17190.msg117422.html#msg117422

Greg

122

General Mach Discussion / Re: A axis ignoring moves

« on: November 06, 2011, 08:21:25 PM »

We all need a little nudge sometimes, to get the brain looking in the right direction.

Glad you got it sorted out.

Greg

123

General Mach Discussion / Re: Modbus spindle control questions...

« on: November 06, 2011, 05:34:42 PM »

Okay guys,
    Twenty some odd views and NO posts is not very helpful.

I viewed your post.  For me to reply saying "I know nothing of TECO VFDs" would not aid you much, don't you think?

A lot of very helpful and knowledgeable folks here but sometimes a little patience might be appropriate.   

Greg

124

General Mach Discussion / Re: A axis ignoring moves

« on: November 06, 2011, 04:49:46 PM »

The only A position calls I can see in the code are all "A45"

As there is a "G90" in the preamble, you are in absolute coordinate mode.

So the first "A45" call will position the A axis at 45 degrees, and subsequent "A45" calls will not move the A axis because it is already at that position.

Greg

125

General Mach Discussion / Re: An other "Auto Tool Zero" question.

« on: October 21, 2011, 09:00:01 PM »

The code relies on the Z axis being above -3 when started.

If for example the Z DRO read -4 when starting the code, it would travel up to -3.  Perhaps this is what you are seeing.

If that was the case then adding some lines like this could help

DoOEMButton (1010) 'zero the Z axis so the probe move will start from here
Sleep 100 'Pause for Dro to update.
Code "G90 G31 Z-3 F20"

Greg

126

VB and the development of wizards / Re: Ref All Home script

« on: October 05, 2011, 04:11:44 PM »

You did not say, so I will ask..........you are using the printer port right?   Not an external controller like a SmoothStepper?

Greg

127

General Mach Discussion / Re: Tweaking constant velocity mode (laguna smartshop)

« on: September 08, 2011, 05:21:16 PM »

First thing I would be looking at is the acceleration in motor tuning.

Manufacturer may be setting acceleration too conservatively. 

Not saying this is so, just where I would be looking first.

Then if you can not get better machine performance, look at the CV notes PDF for guidance.

There are a few settings that can be tweaked to try and get better CV outcome for lower performing machines.

Greg

128

Promote and discuss your product / Re: *** Back to School Sale on G-Wizard Feeds and Speeds Calculator ***

« on: August 21, 2011, 04:59:02 PM »

Sorry Bob but the reference that you gave supports the fact that you made an error.

I'm afraid I do need to disagree, and my understanding is sound. 

For some years I have operated both a CNC three axis router (moving spindle) and a CNC three axis milling machine (moving table), so I do understand the difference.

I quote from the text in the CNCexpo.com,

The thumb represents X axis, the index finger Y axis, and the middle finger Z axis.

As opposed to your article,

Those three fingers are now pointing in the directions of positive X (second finger), Y (index finger) and Z (thumb).

As I said not a big deal but I thought you might like to have it read correctly.

Greg

PS here is a clip of the supporting picture on the CNCexpo page,

129

Promote and discuss your product / Re: *** Back to School Sale on G-Wizard Feeds and Speeds Calculator ***

« on: August 20, 2011, 05:58:27 PM »

No big deal Bob.  We can agree to disagree.   

Quote from your first paragraph,

Hold up your right hand with the index finger extended and the thumb up, like you're simulating a gun.
Now extend your second finger at right angles to the index finger.
Those three fingers are now pointing in the directions of positive X (second finger), Y (index finger) and Z (thumb).

Great work on the tutorial by the way.

Greg

130

Promote and discuss your product / Re: *** Back to School Sale on G-Wizard Feeds and Speeds Calculator ***

« on: August 20, 2011, 07:43:38 AM »

Bob

You might want to take another look at your explanation of the Right Hand Rule in the Gcode course.

Greg