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Very cool guys. .

Excellent work.

Greetings.

Funny, I just finished my Panel as well:



It communicates with LinuxCNC via Modbus, with a STM32 Nucleo board running a simple Modbus server: github.com/hansu/ModbusIO/tree/devel

 

 

You will need to widen the following error limits to be able to tune the joints.

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?

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.

PWM type must be 1

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.

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.

Not any real help but

[xcb] Unknown sequence number while processing queue

looks like the cause of the crash, possibly a GUI bug

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

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.

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.
 

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)

Hello,

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

Best regards, Frank.

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?