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Thank you for your replies PCW and langdons,

You were on the money PCW! I had my MIN-Ferror set way too small - this made sense in my head, but clearly didn't work. Also swapped my A,B and Z polarities at the mesa. Thank you greatly for the tip!!

I've got the test motor running now, and am able to tune it with Tommylight's guide on the bench within 0.003mm ferror. Couple of questions for the next stage though:

- I assume I would get a baseline tune on the bench for all motors. Then instal motors, run the inertia calculator in the motor software (adust these parameters where fit), then finally re-tune/adjust my position tuning with motors under real loads?

Regarding wiring - I plan to use twisted pairs on the ANOout/GND control and each encoder channel. Can I have the 3 encoder twisted pairs in one shielded cable and the analog control in a seperate one? Or can I put them all in a common shielded cable?
Or do all encoder pairs need to be in seperate shielded cables as well?

Currently I'm just using some CAT6 cable for the encoder link and some shielded twin core audio cable for the analog voltage on the bench. However, I'd like to order the right stuff for the next stage of wiring.

Many thanks,

J

 

Looks good and great addition to qtvcp.
And thank you for all your efforts for creating and maintaining qtvcp.

This might help you: forum.linuxcnc.org/24-hal-components/418...thercat-etc?start=40

Thank you scotta, Im back early next week, I'll try it then and let you know.

parport_pc.so file missing

I don't know if the driver it's enabled, its hard to understand something with that display and buttons . But i'm trying to operate with motion studio that won't give me access to the driver, could be the chinese CH340 usb A to rs232 that i'm using . For the mesa i tryied boot up linuxcnc with the mesa offline and it didn't boot up(with the mesa online it boot fine), so the problem now is that i need to know what the driver it's doing and why i can't connect with it.
Tomorrow i try to check if i can enable the driver with the buttons .

@Murphy,

I've made some code changes which may help with the spindle issues. Would greatly appreciate your feedback.

github.com/scottalford75/Remora-RT1052-c...t1052-3.1.4.beta.bin

Thanks

Probe Basic

Not sure what you mean by tandem axis/joint. It's a mill so three axis, defined with axis_ and joint_

To that point, the issue is both before home and after, so joint and axis.

What error does LinuxCNC show?

What GUI?
Does the machine have tandem axis/joints?

I have soft limits on my axis and absolute encoders. If I power off the machine when I am on the limit (max or min), the machine may move by a 10th (0.0001) or so, once the servos release on power off.  This will cause the machine to "move beyond" the soft limit, even if just 0.0001.  Once this occurs, I can't jog the axis at all.  I have to edit the limits in the ini, jog and reset the limits back. 

I would expect you can jog toward the soft limit and beyond to get back into the limits.  How can I jog into the limits is I am just slightly over (but over)

You need to set large min-ferror and ferror limits (an inch / 25mm or so) so you can see
the motor behavior (you have about a 50% chance of the wrong feedback direction and
runaway so of course this needs to be addressed first.)

Also make sure you have working drive enables or motors disconnected from linear axis
as a runaway linear axis can be dangerous/destructive.
 

I am trying to upgrade linuxcnc to 2.9.3 I was running 2.7.x I am using all the same hardware but when the parallel port tries to load it gets the I/O ports at e000 [disabled] error. On the old version is was running a port 0xe000 and irq 3


cat /proc/interrupts
          CPU0       CPU1       CPU2       CPU3       
  0:          9          0          0          0   IO-APIC   2-edge      timer
  1:          0          0          0          4   IO-APIC   1-edge      i8042
  3:          0          0          0          0   IO-APIC   3-edge      parport0
  8:          1          0          0          0   IO-APIC   8-edge      rtc0

sudo modinfo parport_pc
filename:       /lib/modules/6.1.0-23-rt-amd64/kernel/drivers/parport/parport_pc.ko
license:        GPL
description:    PC-style parallel port driver

sudo dmesg | grep par

[    8.549490] ppdev: user-space parallel port driver
[    8.761564] parport_pc: unknown parameter 'auto' ignored
[    8.761730] parport 0xe000 (WARNING): CTR: wrote 0x0c, read 0xff
[    8.761736] parport 0xe000 (WARNING): DATA: wrote 0xaa, read 0xff
[    8.761736] parport 0xe000: You gave this address, but there is probably no parallel port there!
[    8.761750] parport0: PC-style at 0xe000, irq 3 [PCSPP,TRISTATE]
[    8.860174] lp0: using parport0 (interrupt-driven).

lspci -vv
05:00.0 Parallel controller: Nanjing Qinheng Microelectronics Co., Ltd. CH351 PCIe Parallel Port Adapter (rev 0f) (prog-if 01 [BiDir])
    Subsystem: Nanjing Qinheng Microelectronics Co., Ltd. CH351 PCIe Parallel Port Adapter
    Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
    Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
    Interrupt: pin A routed to IRQ 3
    Region 0: I/O ports at e010 [disabled]
    Region 1: I/O ports at e000 [disabled]




 

I'm going to check into the belt tension. I know too tight howls, but too loose?

Is this a lot?