I think the forum will need some more details: Is this a rack based system with seperate 5Amp stepper drive cards ? My own knowledge of these is sketchy but I think we do have some of these in stock for service exchange. I don't know how you configure the step rate in software or hardware - sorry :o...

MrMagoo supplied some old machine cable diagrams you can download here:

http://www.denfordata.com/downloads/dos ... agrams.zip

Just another thought - have you got the correct machine selected ?

It tells you at the top of the VR Milling window which is the current active machines.

First try downloading the latest version of VR Milling 2: http://www.denfordata.com/downloads/VRMilling_V2_31_CD.zip (sorry but its a 160Mb file ) Could be that the updating mint file crashing was a bug in the version you are running. As regards the machine not doing what you want/ expect, I really ...

This sounds like: The axis could be tight (check the strips and/or remove the motor and test again) or The Stepper Motor has burnt out or The wiring to the stepper motor is damaged/broken Steppers tend to buzz (and don't spin): 1. If the load is too great 2. If the step pulse frequency is too high, ...

Not 100% sure about the older software, but I believe denfords have always favoured Fanuc style G-Code programming.

So, a standard, basic, Fanuc (say Fanuc 0-MC) post output should work fine (The basic codes will at least work G1,G2,G3,G4,G90,G91)

You can send any files for posting to Denford Forum Admin at technical@denford.co.uk

or just email the Denford Admin user (me) from here.

You must format a Dos boot disk and copy the fanumd.zip contents onto said disk for the VMC to run. For the Mirac PC you will need Mirac.zip extracting onto your standalone PC. This Zip will be in our downloads section shortly.

If v1.88 works, then send Denford Admin a copy and I can put it in the DOS downloads

The 16Mhz clock is ONLY necessary if you wanted to update the control firmware to run windows VR Milling/Turning. We just use the crystal just to help us identify the boards' processor and revision. The latest DOS control software should be matched with the latest EPROM version and the clock speed s...

And here is the latest Heidenhain software for you to download and try out:

http://www.denfordata.com/downloads/dos/heiden-tri.zip

It does sound like a bug - MrMagoo might know if there was a way around it. Can you output the program via a post that breaks the arc up into smaller linear moves ? Have you tried same thing in Fanuc ISO program format using I J or R ? It could be that the arc data to the machine is calculated diffe...

Personally, I can't help as I've never seen this control, let alone use one.

PM or email MrMagoo as he should know all about it.

Use the following cable diagram to continuity check your connections from the PC, directly to the 9way connector on the Baldor motion control card. Even try make up this cable in order to rule out cable/connector problems. http://www.denfordata.com/projectimages/rs232_9to9way.jpg This cable will wor...

We often have problems where a customer has used a different RS232 cable to link to our machines, or is having problems communicating because of faulty serial link cables.

Is this topic of any help ?

viewtopic.php?t=114

If I remember correctly, the Fanuc itself will choose the gear range according to the spindle speed programmed, by setting a gear change request flag to the PLC logic. It uses these parameters to decide which gear to pick. The logic will then confirm which gear it has changed to Because the first th...

There is an in-depth guide to creating Lithophanes using QuickCAM v3 or PRO here http://www.denfordata.com/pdfs/lithophane_tutorial.pdf This and other tutorials are available from the Help menus of the latest versions of software. When we machine plastic we clamp a good quality MDF / fibreboard to t...

Not for these parameters. My fault - I thought it was a lathe (OT) :oops: If you look at those parameters and the values make sense, then they are the ones - give it a try - you can't do any harm (famous last words :wink: ) If you change the 4000 to say 8000, then all your actual speeds will be half...

If you can, try changing the output format from ASCII to binary or vice versa.

Does it read smaller (lower triangle count) files from Inventor OK ?