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Re: Version R1.001 online.

 

--- In mach1mach2cnc@..., Art <fenerty@a...> wrote:
Hi All:

Veriosn 1.001 is online as the development version. R1.0 is still
available
and will be until 1.001 passes all tests. <snip>

4) Repeat is fixed and is located on the main screen. It seems
very stable now.

Sorry - it's not for me. Sometimes it does not repeat, sometimes it
repeats but does not decrement the Inhibit-Z value, sometimes it
runs once, once the pulse rate went down to 100. All with the same
test rectangle G-code as before. Never had it work as expected in
twenty+ tries. The controls are not on the main screen as indicated
so I thought I had wrong version (does not say 1.001 in Help) but
downloaded it again and M99999 works a treat.

Can anyone else make:

f100
g1 z-10
g1 x5
g1 y10
g1 x0
g1 y0
M30

work with Z-inhibit initially = -1 and Lower ZInhinit on each pass
set to 0.5 and 12 repetitions? (it's for Metric Units)

Best wishes

John Prentice


Re: stepper stall (to Art)

Art
 

Isak:

Still checking, but I cannot repeat it. When I set backlash on and command
a circle, for example, it rotates to the 90 degree points, ramps down,
backlash corrects, ramps back up and continues....
I continue to test...
Art
www.artofcnc.ca


Re: stepper stall (to Art)

Isak Levinson
 

Hi, Art.
Are there any new about the backlash correction problem ?
Thanks, Isak.

----- Original Message -----
From: "Isak Levinson" <isakl@...>
To: <mach1mach2cnc@...>
Sent: Wednesday, August 27, 2003 1:51 AM
Subject: Re: [mach1mach2cnc] stepper stall (to Art)


It has no difference if CV is enabled or disabled, via the menu or the
g61/g64 commands.
The effect is the same.

As I see your algorithm works as follows:
The G file is parsed and converted into a tool path list.
The kinematics algorithm calculates the motor speeds.
I think that your backlash correction is done in the RT (mach.sys)
service.
This R service does not have knowladge of the kinematics (only the final
speeds).

If I migh suggest an alternative that algorithm:
After you parse the G file you can scan it for direction changes.
Now you can insert the backlash corrections paths into the path list.
And now calculate the kinematics algorithm for the motor speeds on the
new
path, which include the bcklash corrections.

That way you will be able to use baclash correction reguardless of CV
setting (If CV is on there could be a slight drift from the optimal path)
You won't have to deal backlash in a special way.
The backlash corrections would comply with the same
acceleration/deceleration as all other moves.
You won't have to define a speed for backlash correction.

I think that all that has to be done is to scan the desired path list for
direction change, and insert the backlash compensation segments in those
points.

Isak.





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Re: "OT" Mainboard Recommendation / NO OBV

Servo Wizard
 

Garry,

The auction has closed so I cannot return to see what Jeff and
yourself are referring to. Having purchased four of the mainboards I
can tell you for sure that they have no onboard video. I will send
you both a link to Matsonics web site or you can simply search for
MS9307C+ (USB) and that will provide all you need to know about the
mainboard.

Servo


Re: Version R1.001 online.

Art
 

Steve:

I did find the problem with dwell, it could really screw things up in
threading due to the shift in encoder counts being calculated during the
spin-up or down. This has been repaired for next version. I am still looking
for the X problem....

Thanks,
Art
www.artofcnc.ca


Re: pause (ART)

Art
 

Josh:

Sorry, No. The Pause on the screen is a trajectory calculator pause, not an
interpreter one. This is used because it has ramp down capability. In MDI,
you can stoip a motion with "esc" key, or pause, but the pause will only
affect a move not yet fully calculated so it can be up to 1-2 seconds behind
the function call.

Thanks,
Art
www.artofcnc.ca


Re: Version R1.001 online.

Art
 

Steve:

Sorry, no. That means almost nothing has ben done to Lathe since last
version. Sorry, but too much developed this week in mill to get time for
lathe. I am looking into speed issues now.

Thanks,
Art
www.artofcnc.ca


pause (ART)

 

Hello

Pause is being used as a motion stop in program run mode. Yet it is
not a motion stop because it is not active in MDI. Could this be
changed?

Thanks
Josh


Re: "OT" Mainboard Recommendation

Garry & Maxine Foster
 

Servo
The link you posted to the board sure seemed to say the card has onboard video..

I was wondering the same thing Jeff was.

Garry

To: mach1mach2cnc@...
From: "Servo Wizard" <servowizard@...>
Date sent: Fri, 29 Aug 2003 22:26:31 -0000
Subject: [mach1mach2cnc] Re: "OT" Mainboard Recommendation
Send reply to: mach1mach2cnc@...

Jeff,

The MS9307C+ (USB) does not have onboard video. It has been my
experience that boards with onboard LAN and video can be kind of
QUIRKY due to the shared memory. Graphics adapter cards work from
their own memory and most generally do not cause conflicts with other
processes. I would suggest that you stay away from mainboards that
have onbard LAN and video. Onboard sound is not an issue due to the
fact that it is not a key component. Mach2 has no use for music and
will not share resources with sound.

Servo

--- In mach1mach2cnc@..., "rs274d" <rs274d@c...> wrote: >
Servo, > > Are you using the onboard video on the motherboard you
suggested? > > Jeff E. > > > --- In mach1mach2cnc@...,
"Servo Wizard" > <servowizard@y...> wrote: > > Hi, > > > > The
mainboard is manufactured by Matsonic and the model number is > >
MS9307C+(USB). The mainboards are currently available on eBay for > >
$49.??, just search for (9307C+), include the parentheses. The >
seller > > is a company by the name of Abertek and they are solid. (as
oposed > to > > being flakes) I have purchased four of these boards
and while they > > are somewhat lowend their performance is excellent.
They are easy > > builders and I'm very pleased with the ones that I
purchased. > > > > Servo


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Re: Version R1.001 online.

Steve Blackmore
 

On Sat, 30 Aug 2003 16:00:05 -0300, you wrote:

Hi All:

Veriosn 1.001 is online as the development version. R1.0 is still available
and will be until 1.001 passes all tests. Nothin new in Lathe, but a few bug
fixes and changes..
HUhh?? Does that mean there is nothing new in lathe, or there are a
few bug fixes?

What happened to buggy spindle or is it still there?
--
Steve Blackmore


Debugging Yahoo! software - was Mach2Mill Manual - **OT**??

John Prentice
 

Hi

Well I think I understand some of the issues after about an hour of testing - however it's much more fun testing when chip and suds are flying ;=)

Yahoo have changed terms of service so that even if a group declares Public access to everything (which Mach1Mach2 did) the non-members cannot access files etc. This was well advertised but I did not see implications.

I run with the "Remember my id on this computer" checked so normally when I click the Favorite I get straight into the group and am logged in. If one uses several Yahoo identities on one machine then this does not work. A different login clears the "memory".

If you follow the file link from an e-mail then one might not be logged in. In this case if you have not remembered an ID then the right click, Save Target As... ends up saving an webpage which is the Sign In screen!

If I have a remembered ID as an ordinary user then the Save fails stating that the file is unavailable. This must be a bug. If I have remembered my japrentice Sign In then I can access the file (either because I am a moderator or because I was the creator - I do not know which).

So my advice (apart from getting your manual from the "mirror sites" is to ignore the link in the message and to login and navigate in Yahoo! through the Files section.

My future notification will say something like:

In Yahoo! click on the Files link and move down the folder tree to end up right clicking on the file M2DocDrafts>M2MA2.3.pdf Choose the Save Target As... option and save the manual on your hard drive.

If you have time to experiment, apart from Quota Exceeded errors, does this formula work for you? Do let me know please.

Best wishes

John Prentice


Version R1.001 online.

Art
 

Hi All:

Veriosn 1.001 is online as the development version. R1.0 is still available
and will be until 1.001 passes all tests. Nothin new in Lathe, but a few bug
fixes and changes..

1) Rutex button in Motor tuning should read PID variables in real time.
Please let me know how stable this is if you use rutex drives. Only handy
for setting pots at this point.

2) SendSerial will no longer send when loading or simulating the file.

3) Macro's may now be from M100 to M99999

4) Repeat is fixed and is located on the main screen. It seems very stable
now.

5) New Macro command GetParam( param ) and SetParam( param,value);

Only 6 commands are in Get and SetParam, but this macro command will be
added to constantly. It is used as follows:

X = GetParam "XScale"
SetParam "XScale" , 2.45

So far only the 6 scale variables are added, but more will appear shortly.
Any requests in this area will get their wish on next release. These macro's
have the ability to get you almost any variable in the program, from
scaling, spindle speed, current offsets, feedrate, your printer port
address, steps/unit..whatever. They can be very powerfull if enough commands
are added. This gives a macro the capability to get the current DRO reading,
repeat number, Z-Inhibit, Safe_Z, tool length settings...etc... and set them
all as well.
The ability to call an OEM code will appear shortly so you can press any
screen button from a macro, this means the macro's can switch screens, set
DRO's, send messages, etc....

I'm working on the other reported bugs from this week for the next
verison.

Thanks,
Art
www.artofcnc.ca


Re: One dump encoder pulse question more...

gittt2000
 

--- In mach1mach2cnc@..., "Mika Salmi" <mika.salmi@p...>
wrote:
I got nice differential pulses whitout problem but the edge of >
pulse is only 3,3V which maybe is too low for my Rutex drives.
Does enyone know if I can make similar pull up with 5v and resistor
as step and dir pulse line sometimes need?
portions of this message have been removed]
Mika - you really need a 26C31 line receiver chip or similar. This
will take the differential pair and give you a single ended output,
with all the noise rejection advantages of the differential line.
Each 26C31 chip has 3 receivers.


Richard


One dump encoder pulse question more...

 

Hi, to all

I just tested pair of new encoders I got cheaply.
The encoders are made in Taiwan by Hontko Co. Type is: HTR-HB-8-1024-3-L.
Spec says they are 5V, 1024 pulses per rev, with line driver cirquit.
When I hook them up top my new oscilloscope I got nice differential pulses whitout problem but the edge of pulse is only 3,3V which maybe is too low for my Rutex drives.
Does enyone know if I can make similar pull up with 5v and resistor as step and dir pulse line sometimes need?

Thanks in advance,

Regards Mika.


Re: Mach2 Relase 1.0

Art
 

Steve:

There a ew trying it, but I suspect your the only true step/dir spindle
using it.

I am busy with a couple of other things at the moment, I will be updating
it shortly...

Thanks,
Art
www.artofcnc.ca


Re: Mach2 Relase 1.0

Steve Blackmore
 

On Wed, 27 Aug 2003 22:54:43 -0300, you wrote:



I don't think anything runs Lathe well yet. ;) (Also, start calling it Turn
or I'll sick John on you...)
Any news on "TURN" ?

Is there only me having problems with speed control, or is there only
me trying it?
--
Steve Blackmore


Re: Digitizing

Michael Milligan
 

Art

Many years ago we developed a general digitising package for
use
on machine tools, this package was able to capture data from
both
3D and 2D unknown forms.

As part of this package we developed standard macros which
resided
On the CNC controller and were used to capture the basic
data.

We had a macro for 2D shapes which was very effective :-

Initially the probe moves onto the profile and
takes its
first hit.

It then moves off the profile in a circular
move.

The probe continues on the circular move until
triggered
or it gets back to the initial point.

If it gets back to the initial point (very rare)
the circular movement
parameters are altered and the operation
repeated.

If the probe is triggered the XY point is sent
back to the PC and
the operation is repeated.

In this manner the probe will work its way round the profile
until it gets
back to the start point (within a preset tolerance).

The set of XY points can then be passed through a Curve Fit
routine
to produce a tangential profile.

The parameters of the macro can be varied depending on the
profile
to be captured.

Michael

-----Original Message-----
From: rainnea [mailto:rainnea@...]
Sent: 29 August 2003 14:35
To: mach1mach2cnc@...
Subject: [mach1mach2cnc] Digitizing

Hi Art,

If you're doing any more work on the digitizing functions, could I
please put in some requests;

1. Teach Mode - Jog the machine around a part and press a button,
either on the keyboard or an external switch, each time the button is
pressed the current coordinates are saved to file.

2.a. File Mode - Load and run a G-Code file as normal except on every
move, do a Z-plunge till the touch probe is triggered and capture
coordinates. Would work similar to your current digitzing function
but users would have the flexability to load a spiral path, or index
the A-axis to digitise a ring, etc.
2.b Trigger a laser range finder instead of doing a Z-plunge.

Thanks,

Rab





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Re: Need info on lathe spindle speed sensor

Servo Wizard
 

Dan,

These are the two photoelectric sensors that Art recommended.
EE-SY671 or EE-SY672.

Servo


Need info on lathe spindle speed sensor

 

Hello all, I have been searching the archives for info on the
spindle speed sensor and checked the files folder without any luck.
Hopefully I didn't miss it, I have been known to be blind while
searching for things. I am going to "enhance" my old 1946 clausing
lathe with addition of steppers to make things more interesting
around here. Notice that I said enhance not destroy. I figure that
I will be able to add the motors without giving up my ability to use
it manually if needed. I have just reassembled it after tearing it
down for a tune-up, and what a difference it has made. I want to be
able to cnc up some spindles for a tool post grinder that I have
designed, and it will require threading. I originally was going to
use a metric thread for the retainer nut, but the old clausing just
sat there saying "sorry, I don't know metric".

Thank you in advance, Dan


Re: PWM Schematic

Servo Wizard
 

Hi,

The PWM spindle speed circuit consist of (1) 1k Ohm resistor (10k
Ohm) and (1) 200 MFD capacitor (20MFD). The values in parentheses can
be substituted with no gain or loss, just physical size. My
preference is to use a polarized capacitor. A simplified explanation
for the circuit is to select the spindle step pin at the parallel
port and attach one end of the resistor to that pin. Next selecting
pin number 18 through 25 you will attach the negative pole of the
capacitior to that pin. That leaves you with two ends, one the
resistor and two the positve pole of the capacitor. Connect those two
ends and you will have an approximate analog +4.9VDC. That is the
voltage that most PC will ouput however I have been advised that the
newer sysytems might output only 3.3VDC. Most AC VFD drives will work
from the 0 to +4.9VDC signal, however if you need the full 0 to
+10VDC scale then I have hardware that will get you there.

Servo