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Messages - DaWiz

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1
General Mach Discussion / Re: Home Offset Proble
« on: May 22, 2013, 07:32:04 PM »
OK, all offsets are based on machine coordinates which is what you set when you reference the machine.  When you fire Mach up do you jog to a known location and hit the reference all button?  Setting your work coordinates 0 and your reference (machine) zero are 2 totaly different things.

Brett


OK, all offsets are based on machine coordinates which is what you set when you reference the machine.  When you fire Mach up do you jog to a known location and hit the reference all button?  Setting your work coordinates 0 and your reference (machine) zero are 2 totaly different things.

Brett



I don't mean to sound dense but I am now confused.  I do the following and, until the problem starts, it usually gives the desired results:
1.  Turn on the computer and drive electronics.
2.  Turn the machine on.
3.  Load Mach3.
4.  Click Reset.
5.  Mount the material in the desired location.
6.  Jog the tool to where I want X0 and Y0.
7.  Set the homing plate on the op of the material and clip to other circuit wire to the bit.
8.  Click Ref All Home.

At this point the Z axis will descend until it touches the plate then back off slightly.
It is supposed to set the Z axis to the value in Home Offset for Z Home (+0.2300).
I then set X and Y to 0.

Currently it is setting the Z axis to some value like +2.3950 even though Z Home Offset is set to +0.2300.

I am unsure as to what a "known Location" is.  I assume machine 0 is the position of the tool when the machine is at the limit of travel in the negative direction for each axis.

It appears that the program is using the values from the last known position before the crash as a base number and adding the value in home offset to it.  Jogging to a position does not affect this behavior.

Glenn
 

2
General Mach Discussion / Re: Home Offset Proble
« on: May 22, 2013, 05:49:12 PM »
I do not use home switches.  I use an aluminum plate on top of the material as 1/2 of the Z axis home circuit.  The other half is a wire with an aligator clip for cliping on the bit.

3
General Mach Discussion / Home Offset Proble
« on: May 22, 2013, 01:48:03 PM »
I have spent days searching the forum for information on a problem I am experiencing.  I have not been able to find an answer.

I use a plate and clip on the end mill for the Z axis home.  After setting up the homing an home offset it works fine for a while.  If Mach3 terminates abnormally (power failure etc.), the ref all home function et the Z axis to a different value from that on the homing/limits screen.  It is acting like there is a value stored somewhere else that is added to the value on the homing/limits screen.

Replacing the XML config file and redoing the Z axis home does not help.  So far the only way to get it working correctly again is to uninstall Mach3. Delete the C:\Mach3 folder, install Mach3 and redo the Z axis home setup. 

This is getting to be very frustrating to me.


4
General Mach Discussion / Re: Y axis moving in the wrong direction
« on: April 26, 2013, 01:44:49 AM »
Thanks very much.

5
General Mach Discussion / Y axis moving in the wrong direction
« on: April 25, 2013, 10:31:35 PM »
I am using VcarvePro, Mach3 with CRP4896 profile and Gercko G540.

I set sll azis to 0 in the lower left corner then enter G0X1Y1 on the MDI screen.  X moves in the correct diretion.  Y slams the bumper.  I have the same problem with g-code - the Y moves in the wrong direction.

I have searched the Mach3 help and cannot find any way to reverse the default direction of the Y axis.  Is there a way to handle this in Mach3?

6
General Mach Discussion / G540, Huangyang VFD and soindle control
« on: April 02, 2013, 02:53:26 PM »
I know this is probably a heavily discussed topic and apologize to those of you who are tired of it.  I have spent days searching here and on the internet for information on how to control a spindle motor from Mach3 via a Gecko G540.  What I have found leads me to believe it can be done without requiring additional electronics.  My problem is the information is not very clear.  I have a few questions for clarification.
First my hardware:
CPU Athlon 64 X2 2.63 ghz
Parallel port.
2.2kw spindle
Huanyang VFD

I am still building the CNC machine (CRP4896) but have tested Mach3 and the G540 and Nema 23 motors.  All seems to work fine (I was worried because I have integrated video).

The first question:
The G40 manual lists 3 pins for VFD output: 7 – VFD Ground, 8 VFD Output and 9 VFD +10V.  The Huanyang Manual lists: DCM (VFD Ground), 10V (VFD +10V) and what I need to verify; VI (VFD Output).  Is VI the correct connection?

The second question is Spindle start and stop.  I don’t see any other pin(s) that reference the VFD.  How is run/stop handled/wired?  Is this handled via the FOR/REV/DCM connection?  If so is the signal available from the G540?

Thanks in advance for any assistance and for your patience.


7
General Mach Discussion / Re: Configuration Question
« on: March 29, 2013, 04:28:32 PM »
Thanks!  Difficult to find things when your viasion is bad.

8
General Mach Discussion / Configuration Question
« on: March 29, 2013, 03:22:22 PM »
Are there configuration settings for the toolpath display to change the colors?  I am classified as "low vision" and the black background of that display makes it almost impossible to see anything in the display.  I realize there is a way to programs screens but I am not familiar enough with Mach3 yet to be comfortable working with that.


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