Messages

1

General Mach Discussion / Re: Feed rate over ride problem

« on: May 30, 2016, 07:07:12 AM »

Thanks Tweakie, I agree, I'll leave alone for the time being and concentrate on learning.

Next job is to set up my flood coolant system on the machine.

Thanks for the help.

Andrew

2

General Mach Discussion / Re: Feed rate over ride problem - with resolution

« on: May 29, 2016, 12:34:22 PM »

OK. I have discovered the root cause and fixed it.

It was a simple config change on the motion card set up.

in config / config plug-ins - I selected the motion card (yellow box) with the CNC connected to the PC. I changed the setting for the Ratio FRO% from "external" to "internal".

The override controls immediately took effect in my session of Mach 3 and normal control was resumed. I ran the G-code file I'd been experimenting (learning) with and it ran beautifully with the correct feed rates and I was able to adjust the feed rate using the normal FRO controls in the programme.

I'm not sure exactly what its done but I think that with the setting on "external" the program allows an external control of feed rate using a knob on the CNC control box. This seems to have been locking out the ability to allow Mach 3 controls in the programme to do so. Now its set on "internal" it is not looking for an external input to the FRO. Does that sound logical?

In any case - I'm up and running.

Would you still recommend I upgrade to 3.043.062 ?

Andrew
 

3

General Mach Discussion / Re: Feed rate over ride problem

« on: May 29, 2016, 11:25:28 AM »

Many thanks for the reply. I will try this and report back.

Before I do so I have tried one more thing, which was as follows. I have another PC - running the same version of Mach 3 and on Windows XP OS.

Used this PC to drive the CNC and it behaved normally - i.e. the FRO is not locked down to 2%.

My thinking was - how can I compare the settings on the XP laptop / Mach 3 (which works) with the settings on the Win7 laptop (which has the problem)?  - it may be that this could identify some differences that might explain the issue.

With regards to the xml file that defines my profile. In my c:Mach3 folder I have a text document called profile.txt. When I open this the content says "Mach3Mill". It this same folder there are 3 files that have an xml extension. One is called - Mach3Mill.xml - is this my profile or xml file that I see referred to in various posts?  (sorry if this is a really basic question).

Andrew

4

General Mach Discussion / Re: Feed rate over ride problem

« on: May 28, 2016, 04:09:55 PM »

The machine is a X6-1500GT by www.cnc.carving.com.

Its a basic 600x400mm Chinese router.

The controller is titled "Xulifeng-Mach3-USB-Motion-Card" - See also image attached.

Link here to manufacturers website:

http://www.omiocnc.com/x6-1500gt/

5

General Mach Discussion / Re: Feed rate over ride problem

« on: May 28, 2016, 11:32:04 AM »

I'm connecting to the machines control box that has a motion controller and the connection is via a USB.

6

General Mach Discussion / Feed rate over ride problem

« on: May 28, 2016, 10:06:46 AM »

Hi

I’m hoping someone can offer some pointers to help me solve a feed-rate problem I am having. I have a 600x400 CNC router running Mach 3 (Version 2.63) and my PC has a 32-bit Win7 OS.

The problem is with the feed-rate seems to be locking itself down to 2% of the set value and is constantly saying it is over ridden.

Observations:
My PC is not connected to the CNC and I load some G-code with a feed rate of 732mm/min and run the programme. The set feed-rate can be seen as set at 732mm/min by the code – the actual feed-rate can be seen following the set feed-rate more or less. There is no Feed-rate over-ridden LED lit up.  – in other words -  it behaves normally.

I then try the same thing when connected to the CNC. When the machine is connected the software always flashes the feed-rate over-ridden LED – it indicates a 2% FRO in the top right corner of the Feed rate box. The feed rate creeps along at a fraction of the 732mm/min in the code (2%?) . If I press the reset button whilst running the feed-rate momentarily speeds up to the target value but then resets back down again. The reset button and the up and down buttons have no persistent impact. They do work however if I am not connected to the CNC.

It kind of feels like I have a setting somewhere that is forcing the feed-rate down when connected to the machine. I can’t for the life of me find it however.

Any suggestions on what to look at to get this running correctly please? Any suggestions greatly appreciated.

Thanks

Andy

7

General Mach Discussion / Re: Feed Rate Over Ride - can't turn it off

« on: January 30, 2014, 02:34:33 AM »

Hi Hood.

Thanks for taking the time to reply.

I've had a browse through the various config' screens but could not see anything obvious that might be causing the override. I confess I dion't really know what I'm looking for however. Searching the user manual didn't help too much either.

Can you give me a bit more info on where and what to look for please?

Also - do you think I may better off just downloading a full purchased license and re-installing? I will need a full icense long term so will probably have to do this anyway.

Any pointers very much appreciated, I'm very keen to learn.

Andy

8

General Mach Discussion / Feed Rate Over Ride - can't turn it off

« on: January 29, 2014, 12:49:10 PM »

Hi all

Another newbie here. . .   just taking my 1st steps into CNC with a small desktop mill. I have my first question I hope someone can help me with.

I have the machine set up, running under jog control, and soft limits set.

I have a problem with the Feed Rate Over Ride preventing the machine from feeding at the set federate.

The g-code has a federate of 300mm/min. The program runs fine when not attached to the machine. But when ever the machine is attached to the PC I get the red LED for Feed Rate Over Ride come on and it down regulates the feed so something ridiculously low. If I click reset it jumps up momentarily but then gets overridden. It does the same even if there’s no toolpath loaded – as soon as it’s connected to the PC.

I can’t find anyway to turn off the feed rate override.  (It’s a demo / trial version of Mach 3 currently while  I learn my way around).

Any suggestions where I go look for settings that may cause this please?

Andy

9

Mach4 General Discussion / Re: New people welcome !! <<< and a Feed Rate Over Ride question >>>

« on: January 29, 2014, 05:35:41 AM »

Hi
Another newbie here. . .   just taking my 1st steps into CNC with a small desktop mill. I have my first question I hope someone can help me with.

I have the machine set up, running under jog control, and soft limits set.

I have a problem with the Feed Rate Over Ride preventing the machine from feeding at the set federate.

The g-code has a federate of 300mm/min. The program runs fine when not attached to the machine. But when ever the machine is attached to the PC I get the red LED for Feed Rate Over Ride come on and it down regulates the feed so something ridiculously low. If I click reset it jumps up momentarily but then gets overridden. It does the same even if there’s no toolpath loaded – as soon as it’s connected to the PC.

I can’t find anyway to turn off the feed rate override.  (It’s a demo / trial version of Mach 3 currently while  I learn my way around).

Any suggestions where I go look for settings that may cause this please?

Andy