Thats a very nice explanation Brad, and that is what exactly I had in mind too.

RGDS
Irfan

Brad just one more thing - do you have a optoisolator in between the VFD and the BoB (G540) or just have it directly connected.

RGDS
IRfan

I have optoisolators in between the VFD and BoB, but they are furnished by the design of the G540. The G540 optoisolates both the parallel port, and the spindle speed control output. For the estop, I'm running that via the relay on the VFD, which is then programmed on the VFD to provide the 'run mode' output; the relay provides isolation.

Update
 

was asked over in another thread.

The answer is that it's been working beautifully for my weekend warrior projects. It's currently configured at 420 IPM rapids on X and Y, 180 IPM Z; homing runs at 180 IPM X,Y and 30 IPM Z.

I've had zero problems with the G540, the OM7.2s or with EMC2. I had a cold solder joint in one of my DB-9s that eventually failed and was redone. I had some misery with getting waterflow through the chinese spindle with long tubes running through the cable chains.

Thanks bradm !!
 

Good to know.

Nice info..!!

I have just downloaded this package
UBUNTU-8.04-DESKTOP-EMC2-AJ13-I386.ISO,

And I will use the DIY belt drive gear.

Later on when I "understand :)" EMC2 the G540 will be ordered.

Thanks again.!!

/oopz

Brad, how is your g-code project going?

Ries

Very well for basic stuff; it's just the usual defending against weird cases that I'm wrestling with. For example, cutting sloped faces, and dealing with models that have uncuttable geometry (like voids underneath solid surfaces). I should spend a little time and package up what I have so far.

Brad, I would love to sign up your beta version.

OHHH S@#t !!! SOOO SOO NICE !!!!
 

[QUOTE=bradm;39013]was asked over in another thread.

The answer is that it's been working beautifully for my weekend warrior projects. It's currently configured at 420 IPM rapids on X and Y, 180 IPM Z; homing runs at 180 IPM X,Y and 30 IPM Z.

I've had zero problems with the G540, the OM7.2s or with EMC2.

Do understand your statement above. To be frank I have not paid attention
to EMC2..and Im the one who lost on that. (I Love MACH3 don´t think otherwise) ....

But Today
I could manage true EMC2 my 5+-axis card in all directions an with a bad but functional tool.. change message.. more to do and understand maby only 5-axels motion BUT THATS NICE... !!! even with out toolchange ! Like IT !!

THANKS BRADM guy's like U and ALL U Others U make it so NICE !!

/oopz