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For testing the individual inputs, setting them to single ended mode
allows you to test each signal by simply grounding the A+,B+,IDX+
inputs

if you jumper the 7I76 for TTL/single ended mode,
you can test each input by simply grounding each
encoder+ input (TB3 pins 7,10,13 = A,B,IDX) and
watching them in halshow.
 

W4, W5, W6 are in the right hand position. Mode is differential.

Hi, I am playing with qtdragon_hd and cannot seem to get a fourth rotary axis (XYZB) working in the preview in the way I would like. At the moment, in the simulation samples in the latest 2.9.3 release such as "qtdravon_hd_xyza", the rotary A-axis rotates the spindle. But in my setup, I want to rotate the stock. I've tried changing the "trivkins" in the INI file to other options, but then the machine doesn't even turn on for some reason! Does anyone have a working example they could share where the stock rotates rather than the spindle? Thanks! 

if you jumper the 7I76 for TTL/single ended mode,
you can test each input by simply grounding each
encoder+ input (TB3 pins 7,10,13 = A,B,IDX) and
watching them in halshow.

 

PCW wrote:

Are the glass scales differential out or single ended?

The 7I76 encoder input needs to be jumpered to match the encoder type

Output Signal: EIA-422
The glas scales works fine, no problems on 7i85

 

Not sure but what you can do is this:

1. Open you config the way you are used to.
2. Close linuxcnc
3. open terminal and run (note the minus + letter 'L' which should automatically open the last config you used):

Hmm. Could some one point me how to configue dual corexy ? For each side separate axis.

Hey Guys,

I have retrofitted a lathe and two Bridgeport Interact Mills using Mesa 7i76e's.  I am happy with the 7i76e and pncconf but due to their availability (or lack thereof) I am considering doing my new 'from-scratch' plasma table build using an Ethercat interface. 

My question is this: If I go down the Ethercat path will I be able to re-use all of the good work that has been done in the plasma area or will I be doing custom builds?  More specifically can I set up a plasma system using Ethercat by modifying .ini and .cfg files?  I am willing to recompile some fork of the main line of development but I don't really want to be on the 'bleeding edge' of the development effort.

Thanks in advance and Happy Thanksgiving!

JH

 

Are the glass scales differential out or single ended?

The 7I76 encoder input needs to be jumpered to match the encoder type

Kann ich damit auch was anfangen, ich brauche es nur für Gewindedrehen und vielleicht noch für den Vorschub beim Drehen, wäre praktischer als mit mm/min.

Nur ein Indexsignal wird leider nicht reichen.

Aciera wrote:

Since you seem to be loading some custom panels you may have a Python/Gtk version issue. Linuxcnc version 2.9 and up no longer supports Python2 /Gtk2 but only Python3/Gtk3.

I would suggest to open a terminal (Ctrl + Alt + t) and start linuxcnc from the comand line:

linuxcnc

Choose your config and check the terminal output for errors.

Then, the Linux CNC Configuration Selector appears, on the left hand side, when I click all the showed ini files, the right hand side shows "No details available". Obviously, it didn't refer to mine one ? The path location of my ini. and other files are : /home/my_user_name/linuxcnc/config/my_LinuxCNC_machine. Are there something wrong?

PCW wrote:

Can you try all encoder inputs with with one glass scale output?

Note that encoders are:

00  7I85 ENC0
01  7I85 ENC1
02  7I85 ENC2
03  7I85 ENC3
04  7I76 ENC
05  Aliased 7I76 (dont use)

Also you can debug with just a voltmeter across the A,/A B,/B pins
you can also check the input pins with halshow:

hm2_7i92.0.encoder.00.input-a
hm2_7i92.0.encoder.00.input-b
hm2_7i92.0.encoder.01.input-a
hm2_7i92.0.encoder.01.input-b

etc

I have now simply plugged the connector from the glass scale X (00 7I85 ENC0) into the encoder input of the 7i96 (04). When the X-axis moves, the yellow LED at A changes constantly between on and off, B remains on, Count changes between 0 and -1 during the movement, Velocity shows a value from time to time during the movement. I did not change anything on the HAL for the test.
Measured with the voltmeter at the outputs of the spindle encoder, there is no value, so A+ is measured with A- etc.
all this in the unplugged state. When the plug is plugged into the 7i76, I have values of 228 ohms.

I think I did the stupid thing that I copied old LinuxCNC startup icon from the old computer screen and paste to new one, I haven't create a new one instead. Let me check all the things first

Did you try from terminal? Is there any useful info there?

Can you try all encoder inputs with with one glass scale output?

Note that encoders are:

00  7I85 ENC0
01  7I85 ENC1
02  7I85 ENC2
03  7I85 ENC3
04  7I76 ENC
05  Aliased 7I76 (dont use)

Also you can debug with just a voltmeter across the A,/A B,/B pins
you can also check the input pins with halshow:

hm2_7i92.0.encoder.00.input-a
hm2_7i92.0.encoder.00.input-b
hm2_7i92.0.encoder.01.input-a
hm2_7i92.0.encoder.01.input-b

etc