Messages

4531

General Mach Discussion / Re: home sequence

« on: March 14, 2012, 05:40:13 PM »

HIYA Fred, Not a problem . We just get very enthusiastic when we get to test a function and we normally try to test it every way known to mankind. That way everything we find out about it is right here for anyone that is willing to do a simple search.

Heck someone MIGHT even update the manual you never know.

DO you have another funtion you want beat up on??? You done went and got us ALL wound up now with nothing left to do (:-).

(;-) TP

4532

Feature Requests / Re: CV bad behaviour need improvement

« on: March 13, 2012, 07:28:42 PM »

I would turn on CV and turn off all the extra settings, that puts it in native mode and it works 100% of the time.

Mach3 runs a bang bang tragectory (trapazoidal) it does NOT run an S curve. There are settings for accelleration of the motors as well as max velocity.

Perhaps you need to tune the motors DOWN a bit in accelleration to help avoid the sudden stops(;-) or plan your Gcode for a better use of the machine capabilities.

Just because a drive/motor combination can rattle the machine it doesn't mean you should.

Just a thought, (;-) TP

4533

General Mach Discussion / Re: home sequence

« on: March 13, 2012, 04:12:12 PM »

ARRGH  You just test a section then write it all down. Then do a little more the next day and before 2-3 years pass you will have tested it all.

Then Mach4 comes out and you get to start over again (;-)

(;-) TP

4534

General Mach Discussion / Re: Calling axis home/ref sequence from Gcode?

« on: March 13, 2012, 04:04:29 PM »

" It doesn't move when it's not supposed to. It just slowly loses postiton"  I call that moving when it is not suppose to(;-).

Did you turn ON and set up the A home switch in ports/pins ?

Does the A home led light up on the diagnostics page when you trip the switch?

IF you have Mach3 set up then "G28.1 A0"  will refhome the A axis.  You can choosee which direction it homes from in the config/homing section.

(;-) TP

4535

General Mach Discussion / Re: Calling axis home/ref sequence from Gcode?

« on: March 13, 2012, 02:55:02 PM »

YEP fix the turret so it does not need it. If it is moving when it is NOT suppose to it will ruin parts between HOMES so what is the point of refhome it???

(;-) TP

4536

General Mach Discussion / Re: home sequence

« on: March 13, 2012, 02:52:06 PM »

HIYA RUSS you have it correct. (;-)

Now don't forget to note how  it reacts IF you are in G91 mode when you call it



(;-) TP

4537

General Mach Discussion / Re: home sequence

« on: March 13, 2012, 01:44:57 PM »

IF you use a G28 X0 Y0 call then you get a straight traverse move (combined) to home. the X will NOT move first both move at the same time.

To get what you need (IF the G28 and G30 positions are the same) I would use

G30 X0

That will Home X first THEN home Z. That way you have Safe clearnance for all axis to travel.

Other wise you would need to do

G28 X0  (home X)
G28 Z0  (home Z)

Just a thought, (;-) TP

4538

G-Code, CAD, and CAM discussions / Re: Y axis goes crazy after tool change

« on: March 13, 2012, 01:32:35 PM »

OK had to track without all the Gocde BUT(;-)

The N1900 line is the culpret. When you do a RFH it resets all the modal values up to that point. At that point it leaves you in G91 inc mode. When the RFH runs the first thing it does is a traverse move to the restart position(;-) It is doing it in INC mode not abs mode as it should so instead of going to teh Y15.225 it is going to 15.225+15.225 or 30.45.

ALSO you ahould NOT be entering a tool change in INC mode(;-) It should have swithced back to abs mode before the tool change

That line is BAD programming on the post part.

Hope that helps, (;-) TP

4539

Feature Requests / Re: CV bad behaviour need improvement

« on: March 13, 2012, 01:01:05 PM »

YOU have been given ALL the info available on CV. It is what it is. FOr most applications It works BEST if you don't try to outsmart it.
AND again it is not there to FIX your machine from being FLEXABLE (floppy) .

Thousands of users all over the world use it successfully every day so something must be right about it.

Just a thought, (;-) TP

4540

General Mach Discussion / Re: nesting subroutines

« on: March 13, 2012, 12:54:23 PM »

Tool Compensation. G41/42/43/40

(;-) TP