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I think you will find that absolute encoders are considerably more expensive

A 7I73 will work as well (and is 3.3V full scale)

Well, I'm already (after all that experimenting with modbus) running the the machine from the analog and isolated outputs -- I was hoping to get additional feedback into linuxcnc -- somwhen next week an isolated rs485 adapter will arrive and I will try it that way.

Bur after having all this trouble maybe I should warn others about the EMI problems with the "SAKO SKI780" VFD

Refining @cmorley's suggestion...perhaps you could use two scale components to manage the adaptive feedrate.

Step1: scale.0.gain => programmed feedrate down to -1/+1 range
Step2: feedrate adjustment based on arc voltage
Step3: scale.1.gain => back up to desired output

The operator/programmer, as well as your control loop, wouldn't see the backstage math fiddling.  I know it's not 'elegant', but should be easy to do in HAL until someone can edit the adaptive feedrate programming.

you probably could add a 7i84 to get a few analog inputs, then link them in the Hal to feed override. you would have to hook it up to the serial port on your 7i96s. there would be a lot to consider for the HAL, but think there some math components that should work, would want a 36v power supply to use the full scale

Thanks for the reply but I'm not well versed in linuxCNC and was looking for how to stop it from happening.
What do I change or add?????

> Wenn ich das richtig verstanden habe, werden die Koordinaten nach einer bestimmten Zeit gespeichert und nicht auf Knopfdruck?

Varianten zum Loggen (auch in Kombination):

- 'Manual Log' Button clicken
- Zustand eines definierbaren 'motion.digital-in-xx' oder 'motion.digital-out-xx'
Halpins
- Wert eines definierbaren 'motion.analog-in-xx' oder 'motion.analog-out-xx' Halpins
- Zeitinterval
 
 

-- en
Hello support team,

I have noticed that currently the website icon (favicon) is reverting to the official Joomla version. I understand that there are some challenges in the forum that are not so easy to fix. However, this should not affect the website icon.

Would it be possible to use a special LinuxCNC icon instead to more clearly identify the website as a LinuxCNC project?

Kind regards
Mücke

-- de
Hallo Support-Team,mir ist aufgefallen, dass derzeit das Icon der Webseite (Favicon) auf die offizielle Joomla-Variante zurückgreift. Ich verstehe, dass es im Forum einige Herausforderungen gibt, die nicht so einfach zu beheben sind. Allerdings sollte dies das Icon der Webseite nicht betreffen.Wäre es möglich, stattdessen ein spezielles LinuxCNC-Icon zu verwenden, um die Webseite klarer als LinuxCNC-Projekt zu kennzeichnen?Mit freundlichen Grüßen
Mücke

Leider komme ich erst Montagabend oder Dienstag wieder an meine Maschine und meinen Linux-Rechner

Aber ich werde es ausprobieren, denn ich habe das Gefühl, dass es mir viel Arbeit ersparen kann.

eine Frage hätte ich schon.
> Wenn ich das richtig verstanden habe, werden die Koordinaten nach einer bestimmten Zeit gespeichert und nicht auf Knopfdruck?

 

None of the PWM enables are true (and all PWM values are 0)
So no analog output is possible:

30 bit IN FALSE hm2_7i97.0.pwmgen.00.enable <== joint-0-enable
30 float IN 0 hm2_7i97.0.pwmgen.00.value <== joint.0.output
30 bit IN FALSE hm2_7i97.0.pwmgen.01.enable <== joint-1-enable
30 float IN 0 hm2_7i97.0.pwmgen.01.value <== joint.1.output
30 bit IN FALSE hm2_7i97.0.pwmgen.02.enable <== joint-2-enable
30 float IN 0 hm2_7i97.0.pwmgen.02.value <== joint.2.output
30 bit IN FALSE hm2_7i97.0.pwmgen.03.enable
30 float IN 0 hm2_7i97.0.pwmgen.03.value
30 bit IN FALSE hm2_7i97.0.pwmgen.04.enable
30 float IN 0 hm2_7i97.0.pwmgen.04.value
30 bit IN FALSE hm2_7i97.0.pwmgen.05.enable
30 float IN 0 hm2_7i97.0.pwmgen.05.value
30 s32 OUT 0 hm2_7i97.0.read-request.time
30 s32 OUT 134983 hm2_7i97.0.read.time

Note that on initial setup of analog servos you will need to widen the following error limits
as you will likely trigger an immediate following error with such narrow limits

I would start with say 10 mm for FERROR and MIN_FERROR. You may also find that
you get an instant runaway because the feedback polarity is backwards.
YOu fix the by reversing the sign of the PWM scale
 

It currently runs LinuxCNC with a Stepperworld FET-3 board (see attachment) that I got for Christmas of 2006.  Amazingly the entire setup still works perfectly with a PCIe parallel port card.

I'm happy to get a Mesa board, they look very nice.  I'm also happy to upgrade the stepper driver board, I've definitely gotten good value out of mine.  Do you have any recommendations for drivers that are easy to use with the Mesa boards?  If I'm buying new hardware I definitely want to go with whatever will work well with LinuxCNC and a Mesa board.  Perhaps the 7I32, but that is only 2 motors?

My understanding of TTL glass scales is that they are all incremental encoders.  Is there a version which is absolute?  Or am I overly worried about this and I should just accept that I should home it and basically leave it on all the time?

Habe ich das richtig verstanden und kann man auch Kommentare dazu schreiben?

Ja,
'Preferences' -> 'Show Log Comment'
dann den Kommentar im Textfeld eingeben:
 

 

UPDATE:
building the 6.12 rpi kernel (patched with RT) on bookworm, has the display and touchscreen working correctly.
But, now wifi is broken

I'm going to look through the notes and try another kernel that is a bit closer to 6.6

Thanks for the suggestions!

I just did the first cut with the CNC. It appears that it's not just keys, the Y axis is mirrored...

1. Zip Ordner runterladen (grüner '<> Code' Button clicken -> 'Download ZIP') und entpacken (zb nach '~/linuxcnc')
github.com/Sigma1912/lcnc_logger

2. Linuxcnc Konfiguration starten

3. Terminal öffnen ins Verzeichnis wechseln wo du den Ordner entpackt hast und 'lcnc_logger.py' starten:
Handbuch gibts keins. Wenns Fragen gibt kannst du dich gerne hier melden.