my 6040 experience (yeah, and problems) so far

[JAZZCNC]

Ok well I'm not a fan of those silly plugs and I'd wire to the terminals every time but your correct to wait untill seller responds.

That said if the problem moved then it won't be the BOB and chances are it's a drive or wiring to drive.? . . Again I would check the connections at the drives.

[jimbo_cnc]

I moved the outputs of the BOB to different drivers. So the problem changing axis shows that the driver is not the problem as the problem follows the BOB output independent of which driver it is wired to.

Here is a boring video of the 2 problems.
https://www.youtube.com/watch?v=IoAGHdbffnQ

[EddyCurrent]

Using the red LED's on the drivers as diagnostics, what happens when everthing is connected apart from all the motors ? i.e. just unplug all the motrs, does the fault still happen ? DO NOT unplug them with power on, it will probably blow the drivers.

[jimbo_cnc]

The LEDs behave the same with no motors connected (there was just 1 connected in the video)

[EddyCurrent]

Did you try a different computer ? Is it currently a desktop or laptop ?

[jimbo_cnc]

new findings: forget what I thought before about the drivers all being equal.

When I disconnect the inputs and outputs from the non-used drivers (easy with plug in modules :) ) I find that I only get the malfunctions when using driver2, drivers 1 and 3 can't be made to fault by pressing the jogs on the other axes.

I will go run this simple test on the BOB X and Z outputs in a bit (if driver2 doesn't fault on the X or Z axis then the BOB is also involved in the problem).

[EddyCurrent]

Obvious but it's got to be said, make sure all the drivers have the same settings/links re. this manual (which I guess will be the right one ?) http://www.leadshine.com/UploadFile/Down/M542d.pdf
Also make sure any wiring is well clear of the Enable pins.

[JAZZCNC]

This looks very much like Keyboard trouble so Try another keyboard.!!

Also one thing to try is another parallel port cable. Did this one come with the machine or is it one you've sourced.? I've seen many weird things like this happen and it be the parallel port cable.

Do all the axis move ok with G-code commands.

Also where did you get Mach3 from did it come with the machine.? Wgat version number is it.? You'll find it in the help under about.!