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  • Sziggy_NC
  • Sziggy_NC
11 Nov 2024 20:15
Replied by Sziggy_NC on topic +-10v setup 7i97 & .ini

+-10v setup 7i97 & .ini

Category: General LinuxCNC Questions

Thank you for correcting my mistake. The -10v is gone now.

I still have an issue though. Instead of jumping 0.0100in on enable it is now jumping 0.0015in. It is still enough to trigger a following error. I went ahead and checked voltages just to be sure. Before pressing F2 I am reading 0.008v after pressing F2 I am reading 0.010v. Is the voltage an issue?
  • Lcvette
  • Lcvette's Avatar
11 Nov 2024 19:54
Replied by Lcvette on topic probe basic - toolpath/file preview loading error

probe basic - toolpath/file preview loading error

Category: QtPyVCP

im not certain, it may be that it was a molested version. it initially started as an apt install from sudo apt install linuxcnc-uspace-dev mesaflash from the docs instructions and had been updated over the course of that pc build. for now i would say perhaps my install had been modified while troubleshooting dbtools work, so unless it pops up again, i would say assume it is relegated to 2.10.
  • PCW
  • PCW's Avatar
11 Nov 2024 19:45
Replied by PCW on topic +-10v setup 7i97 & .ini

+-10v setup 7i97 & .ini

Category: General LinuxCNC Questions

PWM type must be 1
  • Sziggy_NC
  • Sziggy_NC
11 Nov 2024 19:33
Replied by Sziggy_NC on topic +-10v setup 7i97 & .ini

+-10v setup 7i97 & .ini

Category: General LinuxCNC Questions

While I am sure that the ini changes needed to be done, they didn't effect the behavior of the analog out pin.

The current behavior is that once F2 is pressed to enable linuxcnc I am measuring -10v across pins 3 & 4. From what I understand this should be 0v until I attempt to jog. Max speed in one direction is -10v and max speed in the other direction is +10v.

I think I have something wrong with my pwmgen.

From reading pwmgen in the docs, I came to the conclusion that for a +-10v servo I needed output-type 2. This is what I have been attempting to use.
Is this correct?

I have tried comparing my hal and ini files to the basic7i97 hal and ini. I'm at a loss for what to try next, but I will keep looking.
  • PCW
  • PCW's Avatar
11 Nov 2024 19:31 - 11 Nov 2024 19:32
Replied by PCW on topic Mesa 7i96s connected but inputs not working

Mesa 7i96s connected but inputs not working

Category: Driver Boards

There is a RS-485 port on the 7I96S but its unrelated to the encoder input.

One thing necessary for the encoder input to work with your single ended encoder
is to jumper the 7I96S encoder input for TTL/Single ended signals. This means jumpers
W1,W2,W3 must all be in the left hand position.
  • PCW
  • PCW's Avatar
11 Nov 2024 19:25
Replied by PCW on topic Linuxcnc crashing randomly when pressing buttons

Linuxcnc crashing randomly when pressing buttons

Category: General LinuxCNC Questions

Not any real help but

[xcb] Unknown sequence number while processing queue

looks like the cause of the crash, possibly a GUI bug
  • JackRay
  • JackRay
11 Nov 2024 19:17
Replied by JackRay on topic Mesa 7i96s connected but inputs not working

Mesa 7i96s connected but inputs not working

Category: Driver Boards

hello ,
your video explains very well the basic connections and it's very welcome because at the beginning it's not easy to understand everything. I've just bought a 7i96s to replace my SV2 card (parallel port) mainly to add position feedback for my axes (encoders). The middle and end of travel connections for my 5 axes are operational and work very well with a Raspberry pi4. Where I'm having a lot of trouble is with the connections and signals from my encoder.
I want to connect the position feedback of my B axis to the only encoder port on the board.
My encoder is type A+,B+,0V,5Vdc . But I don't understand the documentation for the Mesa 7i96s board with TX/RX 422/485 ... I have no signal feedback in the halmeter.

Could you please guide me to the right connections and signals for my configuration? If attached the configuration of my B axis in my . Hal

---closedloop stepper signals---

net b-pos-cmd <= joint.3.motor-pos-cmd
net b-vel-cmd <= joint.3.vel-cmd
net b-output => [HMOT](CARD0).stepgen.03.velocity-cmd
#net b-pos-fb <= [HMOT](CARD0).stepgen.03.position-fb
net b-pos-fb => joint.3.motor-pos-fb
net b-enable <= joint.3.amp-enable-out
net b-enable => [HMOT](CARD0).stepgen.03.enable

# ---Encoder feedback signals/setup---

setp [HMOT](CARD0).encoder.00.counter-mode 0
setp [HMOT](CARD0).encoder.00.filter 1
setp [HMOT](CARD0).encoder.00.index-invert 0
setp [HMOT](CARD0).encoder.00.index-mask 0
setp [HMOT](CARD0).encoder.00.index-mask-invert 0
setp [HMOT](CARD0).encoder.00.scale [JOINT_3]ENCODER_SCALE

net b-pos-fb <= [HMOT](CARD0).encoder.00.position
net b-vel-fb <= [HMOT](CARD0).encoder.00.velocity
net b-pos-fb => joint.3.motor-pos-fb
net b-index-enable joint.3.index-enable <=> [HMOT](CARD0).encoder.00.index-enable
net b-pos-rawcounts <= [HMOT](CARD0).encoder.00.rawcounts


# ---setup home / limit switch signals---


net b-home-sw => joint.3.home-sw-in
net b-neg-limit => joint.3.neg-lim-sw-in
net b-pos-limit => joint.3.pos-lim-sw-in

Thank you very much
  • Aciera
  • Aciera's Avatar
11 Nov 2024 19:07
Replied by Aciera on topic probe basic - toolpath/file preview loading error

probe basic - toolpath/file preview loading error

Category: QtPyVCP 

 2.9.3-2099-g9f5a1c8f50
What/Where is this? We cannot reproduce this bug building the 2.9 branch of the linuxcnc github repo we can reproduce this only in master.
  • PCW
  • PCW's Avatar
11 Nov 2024 19:01
Replied by PCW on topic mesa 7i96s analog spindle

mesa 7i96s analog spindle

Category: Driver Boards

You can just turn the spindle by hand to check encoder counting,
direction, and scale (one forward turn should advance the encoder
position by 1.00)

Your hal/ini examples do not include the needed PID component/
connections/constants. Also note the the encoder feedback must come
from the -rpm pin as the plain encoder velocity will be in RPS.
 
  • langdons
  • langdons
11 Nov 2024 18:57 - 11 Nov 2024 18:59
Replied by langdons on topic New basic setup recommendations

New basic setup recommendations

Category: General LinuxCNC Questions

I have an extra parallel port card lying around.

Do you want it?

Price is $2. (CAD) ($1.94 for shipping + 6 cents for the card itself)
International shipping extra.

The card works perfectly but it is not power efficient.
(It uses an LM7805 voltage regulator that wastes >7/12 of the power as heat)
  • wusel0464
  • wusel0464
11 Nov 2024 18:57
Replied by wusel0464 on topic Macro automatic tool length

Macro automatic tool length

Category: O Codes (subroutines) and NGCGUI

Hello,

maybe the link will help.
forum.linuxcnc.org/qtvcp/39423-qtdragon-...-tool-change?start=0

Best regards, Frank.
  • Philip Lydin
  • Philip Lydin
11 Nov 2024 18:27 - 11 Nov 2024 18:44
Replied by Philip Lydin on topic mesa 7i96s analog spindle

mesa 7i96s analog spindle

Category: Driver Boards

i got it to spin now open loop but when i tried to add a encoder with closed loop control but when i try to get it to go a speed it goes full speed like it thinks that it doesnt move since when i write m3 s0 i doesnt do anything. how would i test to se if the encoder mesa card is receiving the encoder pulses?
 

File Attachment:

File Name: 7i96s.ini
File Size:4 KB
 

File Attachment:

File Name: 7i96s.hal
File Size:11 KB
  • domse
  • domse
11 Nov 2024 18:23 - 11 Nov 2024 18:24
Linuxcnc crashing randomly when pressing buttons was created by domse

Linuxcnc crashing randomly when pressing buttons

Category: General LinuxCNC Questions

Hello, so this same problem occurs on on two different machines. One is an old core 2 duo pc + mesa 7i96 with monitor, keyboard, mouse. The other one is a raspberry pi 4 + 7i96s with a vnc connection (no monitor, no mouse, no keyboard) running a plasma machine.

Randomly the program crashes when navigating the gmocappy gui. it happens while jogging in small increments, when switching to program mode, when searching for a gcode file. I'd say the raspberry crashes more often than the pc. When i manage to start a gcode file, even if it is hours long, it is stable.

i attached a report below, this time the machine was homed and the y axis was moved in small increments when it crashed.

Report:
Warning: Spoiler!


Thank you 
  • denhen89
  • denhen89's Avatar
11 Nov 2024 18:08
Replied by denhen89 on topic After switching from wheezy to Debian 12 only X axis runs smooth (sometimes)

After switching from wheezy to Debian 12 only X axis runs smooth (sometimes)

Category: General LinuxCNC Questions

Update: machines runs again, on Debian 12 with Linuxcnc 2.9.3.

Now something that might be interesting for anyone who had similar problems like me, so that e.g. wheezy worked perfectly (almost out of the box, just some typical bios settings that had to be turned off like power savings etc.), but huge problems on Debian 12.
I had to use different RAMs and set up the DDRam settings correctly like DRAM Frequency (AUTO didnt worked), and also the CPU settings like "AMD Turbo CORE technology: ENABLED" which i thought should be turned off. I played around for at least 2 hours. I used 4 x 2gb RAMs - all of the same type, but i could not use 1333Mhz as was written on the RAMs, but i went up from 800mhz to if i remember correctly 1100mhz.

I didnt run a program for long, but it looks like it works perfectly fine. When i run a code and open GLXgears then i get a latency message in Linuxcnc, but the machines works well, or at least i didnt noticed any strange behavior.
Latency:
Base Thread Max interval: about 30.000 - 32.000
Max Jitter: Below 10.000
(tested with youtube on and glxgears, but not for a long time)

Oh and before i forget:
The whole system was so slow, because i had that one 4GB ram mounted without the other 4GB ram of that pair (8GB), because it seems to be broken, as i mentioned earlier. After inserting other rams and use AUTO "DRAM Timing confirgurations" the system was running very good.
Tomorrow i will setup onedrive and do some milling tests in the coming days.
Hope that everything will work well.

Thanks for help and best regards,
Denis
  • PCW
  • PCW's Avatar
11 Nov 2024 18:01
Replied by PCW on topic New basic setup recommendations

New basic setup recommendations

Category: General LinuxCNC Questions

A 7I96 or 7I96S are stand-alone

(a 7I76 needs an additional FPGA card)
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