Losing steps/position, again

[JAZZCNC]

One for Jazz.
Got my PM25 clone running today and works brilliant but...
I used overkill Nema34 (the grief of my X2 knocked me a bit) seem good motors so that's all fine.

Anyway. If I hit my soft limits at 2000mm/min the motors slightly over travel and put my position out by 0.2mm.
I would say this is down to the rotor inertia of the overkill motors. Would you agree?

Simple solution... Don't hit the limits
I do have some decent nema23 size for it. I'll make some mounts so I can try them out.

Soft limits shouldn't be out by any amount. The point of them is that the controller controls the velocity/acceleration and position so it doesn't let you go past the soft limit value and brings the axis to a controlled stop, unlike when you hit a physical limit switch which just turns off the motor output. In this case, you always get over travel from inertia if moving quickly and even at lower feeds you should consider position lost if you hit the E-stop or limit sw.

[ngwagwa]

OK, Step pulses set to 2 - what about the Dir pulses (currently zero)

Regadng my rewire here is the bottom rail that wouldn't have been too clear on the previous pictures. I suppose I can use some of these for splitting the rectified output from the toroidal transformer?

[Doddy]

I'll bow out of the conversation on re-using DIN rail terminals - I'm not familiar with them enough to advise (Only recently realised there's such things as shorting links). If you have the rail installed (which you have) it feels like a good opportunity, but others here with more experience will offer a more accurate view.

About the DIR - probably best to be set similar - if you miss a DIR change then you might end up with a single step in the wrong direction - but as this would only be on change of direction the error is unlikely to accumulate.

I take your point though that you'll be migrating to UCCNC next week anyway... I wouldn't sweat it too much.

[ngwagwa]

[ngwagwa]

JAZZ I have just remembered the E-Stop switch stays in when pressed, I have to turn it (I think) to get it back out.

[Doddy]

This might not help at all, but for each of my 3 ethernet based motion controllers I installed a second ethernet port and created private LAN between control PC and the motion card without any switch (or hub?, really?, you really don't throw anything away :) ), subnetted accordingly. Now, I'll also say I've never used a cross-over cable but think that most PCs nowadays are auto MDI-X sensing and will sort that out for you.

[ngwagwa]

This might not help at all, but for each of my 3 ethernet based motion controllers I installed a second ethernet port and created private LAN between control PC and the motion card without any switch (or hub?, really?, you really don't throw anything away :) ), subnetted accordingly. Now, I'll also say I've never used a cross-over cable but think that most PCs nowadays are auto MDI-X sensing and will sort that out for you.

Thanks Doddy. PCI ethernet card on order! Have realised my laptop can use a standard patch cable and have tried that today but still disconnects.

[ngwagwa]

STUMPED!
Have installed a Startech PCI Ethernet Network Card and crossover cable direct to the AXBB.
It sometimes connects but often wont.
Utility V1.8 also sometimes does not see the AXBB and when it does it all is OK when I test the connection.
UCCNC V1.2111 sometimes connects to the machine and sometimes doesn't and sometimes it wants to start in demo mode.
No anti virus installed and Firewall turned off.
Have tried with onboard network card enabled and disabled and have tried with both my Windows 7 PC (crossover cable only) and with my windows 10 laptop (straight and crossover cable)
Turning off the AXBB for 5 minutes and/or rebooting either PC does not help.
During all the attempts pinging the AXBB does not lose any packets

[Doddy]

Two PCs, starting to sound more like a AXBB issue - but that's a very very premature conclusion.

Can you post the results of "ipconfig" from a dos prompt? And are you familiar with Wireshark? - it would be useful to know if the comms to the board is bring routed onto the correct interface... but it's not something that you can pick up in 2 minutes.

I'm hesitant but thinking I could pull my UC300ETH so that you can test your PC against that as a known quantity - just for consistent comms.

[ngwagwa]

Two PCs, starting to sound more like a AXBB issue - but that's a very very premature conclusion.

Can you post the results of "ipconfig" from a dos prompt? And are you familiar with Wireshark? - it would be useful to know if the comms to the board is bring routed onto the correct interface... but it's not something that you can pick up in 2 minutes.

I'm hesitant but thinking I could pull my UC300ETH so that you can test your PC against that as a known quantity - just for consistent comms.

I disabled the onboard ethernet.