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thank you, good to know

I’m using the QTDragon_HD UI and Probe Basic with a 3D probe.  Hopefully this may lead you to the Ah ha moment.  All values are in inches.These are the settings I have in my .ini, .hal, and qtdragon_hd.pref files..ini file

[PROBE]
# pick basic probe or versa probe or remove for none
#USE_PROBE = versaprobe
USE_PROBE = basicprobe.hal file

#3D Probe debounce & Tool-Setter-Debounce
setp debounce.2.delay 100 #this sets the delay 100 iterations of the servo-thread
addf debounce.2 servo-thread
 
#3d Probe
net deb-probe-in debounce.2.0.in <= hm2_7i76e.0.7i76.0.0.input-11-not
net probe-in debounce.2.0.out
net probe-in  => or2.probe_in.in1
 qtdragon_hd.pref

[PROBE OPTIONS]
Probe tool = 99
Probe diameter = .138
Probe rapid = 60
Probe feed = 10
Probe search = 30
Probe max travel = .3
Probe max z = .2
Probe extra depth = .1
Probe step off = .2
Probe xy clearance = .25
Probe z clearance = .25
Probe edge width = .2
Calibration offset = 0
Cal x width = 0
Cal y width = 0
Cal diameter = 0

John

Note that the 7I76EU does require an up-to-date LinuxCNC version, at least 2.9.3

 

The image below is where I'm getting the idea to use Stepgen to convert my fanuc encoder data to AB quadrature for outputting to the drives, but I could use some insight as to whether or not it will function or if I'm missing some important details.. Does anyone know?  



Within the HAL, is there a possibility of connecting the fanuc encoder data position output to the 'position in' port of Stepgen as it runs in quadrature output mode, to then output the quadrature pulses to my AB Ultra3000 drives to provide the position feedback to them? Or is there some major flaw in this concept.. 

Thanks

 

Hallo, Mesa bietet das 7i76eu als Ersatz für das normale an.
store.mesanet.com/index.php?route=produc...83_85&product_id=399

Kann ich es genauso verwenden wie das normale 7i76?

vielen Dank im Voraus

Thanks! I just want to prevent current through the spindle coils. I found parameters in the VFD to suppress low frequencies, so I think its solved. Thanks for your hints!
Hanno

An analog circuit with a 0V negative reference cannot swing all the way down to 0V
so the 45 mV 0 level is expected. Also linearity of the output should be better than 1%.

Normally the 0 level is not too important as the spindle enable should be false so the
drive is disabled at that point. If you want to improve the accuracy, you can use the
lincurve component, but note that spindle speed accuracy is not terribly important
for most applications.

Well, my tests yesterday showed tiny problems with the frequency. If I set the output to zero/stop, the voltage at TB4, Pin 2 Spindle Out is 0,045V and the VFD shows 1,56 Hz. The Input voltage at Pin 3 is 9,99V.
Next inaccuracy is frequency setting at S3000 ->50Hz, output is at 2,3V and 45,8 Hz instead of 2,5V and 50Hz.

What can I do to put Pin 2 to zero Volt? Is this a problem of the 7i76e/Lcnc or do I have to calibrate my VFD?

Thanks for your help, again!
Hanno

Für open loop kannst du den stepgen als position feedback verwenden. ZB:

That's been very successful! Thanks! MY spindle is turning! Just in the wrong direction but that's no problem. I can wire it up so that its CW. The next days I will check how to configure the pendant for spindle control. But today, Iam very happy that the spindle is turning!
Thanks a lot, PCW!
Hanno

net spindle.0.on => hm2_7i76e.0.7i76.0.0.spinena

should be

net spindle-enable => hm2_7i76e.0.7i76.0.0.spinena
 

Mon24 13:59: hm2/hm2_7i76e.0: Watchdog has bit! (set the .has-bit pin to False to resume)

Indicates relatively huge network latency (>5 ms if the watchdog setting is the default 5 ms)
That sounds like maybe a power management issue so you might try adding pcie_aspm=off
in your kernel command line.

What is the current kernel command line?
 (cat /proc/cmdline)



 

Ok, I tried your lines out and LCNC gives me this erroro out:
"twopass: Error in file ./Hanno_Nr5_Neuer_Versuch1.hal:
Signal name 'spindle.0.on' must not be the same as a pin. Did you omit the signal name?"

The actual lines in my .HAL:
# ---digital potentionmeter output signals/setup---

setp hm2_7i76e.0.7i76.0.0.spinout-minlim [SPINDLE_0]OUTPUT_MIN_LIMIT
setp hm2_7i76e.0.7i76.0.0.spinout-maxlim [SPINDLE_0]OUTPUT_MAX_LIMIT
setp hm2_7i76e.0.7i76.0.0.spinout-scalemax [SPINDLE_0]OUTPUT_SCALE
setp hm2_7i76e.0.7i76.0.0.spindir-invert true

#net pdnt.spindle-speed-abs => hm2_7i76e.0.7i76.0.0.spinout
#net pdnt.spindle.is-on => hm2_7i76e.0.7i76.0.0.spinena # raus wg Problemen

net spindle.0.on => hm2_7i76e.0.7i76.0.0.spinena
net spindle-cw => hm2_7i76e.0.7i76.0.0.spindir
net spindle-vel-cmd-rpm-abs <= spindle.0.speed-out-abs => hm2_7i76e.0.7i76.0.0.spinout

# ---setup spindle control signals---

#net spindle-vel-cmd-rps <= spindle.0.speed-out-rps
#net spindle-vel-cmd-rps-abs <= spindle.0.speed-out-rps-abs
#net spindle-vel-cmd-rpm <= spindle.0.speed-out # raus wg Problemen
net spindle-vel-cmd-rpm-abs <= spindle.0.speed-out-abs
net spindle-enable <= spindle.0.on
net spindle-cw <= spindle.0.forward
net spindle-ccw <= spindle.0.reverse
net spindle-at-speed => spindle.0.at-speed

# ---Setup spindle at speed signals---
sets spindle-at-speed true

Did I do sth wrong?

Greetings,
Hanno
        

Thanks.  The first issue is the output to control the spindle speed. I use a mesa 7i76e card with 0-10V as reference voltage on the spindle port TB4. The output won't go higher than +5V or for that matter, 50% of any reference voltage that I use.  The spindle also starts turning at 50% of the maximum spindle speed output setting when I use the slider in manual mode to control the spindle speed.  (The spindle only starts to run when the slider is in the middle.) The reason why I suspect that the issue is related to the qt_lathe gui is because when I do the exact same setup with pncconfig selecting AXIS as gui, the maximum output is the the same as the max+ reference voltage. 

The output is similar to "bipolar mode" as descibed in the 7i76e manual p15:as in the screenshot of the manual..     

I also noticed that the -5V to +5V (or 0-10V) output setting in the Spindle section of pncconfig for qtdragon has no influence on the output voltage of the spindle speed control. Whether the box is selected or not it makes no difference. 

My current goal is to get the lathe running with the correct axes and spindle control.  Once that is sorted I'll inform you of the other issues as I find them.

Remark:
The issue was resolved by changing the OUTPUT_SCALE parameter in the .ini file to a value of 1000.  As I read through the comments in the forum regarding the OUTPUT_SCALE value I realised that this is not an absolute value.