ohm sensor

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25 Jan 2022 04:27 - 25 Jan 2022 04:28 #233035 by rodw
Replied by rodw on topic ohm sensor
its not enough to have physical wiring correct. You also need to have hall set up correctly.

I never use pncconf
ohmicsense.ohmic-on is your probe input

Currently it is commented out with a # so on my brief look its not connected to anything.
You also have an enable pin that needs to be connected to 
ohmicsense.is-probing

It is also commented out.

Its good you are seeing 24 volts. Everything is working OK then, you just need to sort out the probe connections.
Last edit: 25 Jan 2022 04:28 by rodw.

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25 Jan 2022 15:55 #233082 by chuben
Replied by chuben on topic ohm sensor
-How can I connect ohmicsense.ohmic-on to the PC?
-How can I enable ohmicsense.is-probing.
For more information I'm looking for I can't find anything, call me stupid. Thanks

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25 Jan 2022 19:53 #233098 by rodw
Replied by rodw on topic ohm sensor
you should try uncommenting the lines I referred to.
If you get load errors, place the comments back to the lines in turn until you find which line generates the error.
run linuxcnc from the command line so you see the error messages.
share the error if you get stuck.

Pncconf will not help as it does not know about this.
 
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27 Jan 2022 01:32 - 29 Jan 2022 22:55 #233245 by phillc54
Replied by phillc54 on topic ohm sensor
If you want to continue to use PnCconf to edit the main hal file then you could move all the ohmic component related stuff to custom.hal.

Remove all the following from PLASMA_LinuxCNC_machine.hal:
# --- Load the Component ---loadrt ohmic names=ohmicsense
addf ohmicsense servo-thread

# --- 7i76e ENCODER 2 SETUP FOR OHMIC SENSING---
setp hm2_7i76e.0.encoder.01.scale -1
setp hm2_7i76e.0.encoder.01.counter-mode 1
setp hm2_7i76e.0.encoder.01.filter 1

# --- Configure the component ---
setp ohmicsense.thcad-0-volt-freq 136500
setp ohmicsense.thcad-max-volt-freq 965900
setp ohmicsense.thcad-divide 32
setp ohmicsense.thcad-fullscale 5
setp ohmicsense.volt-divider 4.9
setp ohmicsense.ohmic-threshold 22.0
setp ohmicsense.ohmic-low 1.0
net ohmic-vel ohmicsense.velocity-in <= hm2_7i76e.0.encoder.01.velocity


# --- Replace Plasmac’s Ohmic sensing signal ---
#unlinkp db_ohmic.in
#net ohmic-true ohmicsense.ohmic-on => db_ohmic.in
#net plasmac:ohmic-enable => ohmicsense.is-probing


Add the following to custom.hal:
# --- Load the ohmic sensing component ---
loadrt ohmic names=ohmicsense
addf ohmicsense servo-thread

# --- 7i76e ENCODER 2 SETUP FOR OHMIC SENSING---
setp hm2_7i76e.0.encoder.01.scale -1
setp hm2_7i76e.0.encoder.01.counter-mode 1
setp hm2_7i76e.0.encoder.01.filter 1

# --- Configure the ohmic component ---
setp ohmicsense.thcad-0-volt-freq 136500
setp ohmicsense.thcad-max-volt-freq 965900
setp ohmicsense.thcad-divide 32
setp ohmicsense.thcad-fullscale 5
setp ohmicsense.volt-divider 4.9
setp ohmicsense.ohmic-threshold 22.0
setp ohmicsense.ohmic-low 1.0
net ohmic-vel ohmicsense.velocity-in <= hm2_7i76e.0.encoder.01.velocity
net plasmac:ohmic-probe <= ohmicsense.ohmic-on
net plasmac:ohmic-enable => ohmicsense.is-probing

Edit: Fix typo (ohmicsense.ohmic-on)
Last edit: 29 Jan 2022 22:55 by phillc54.

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28 Jan 2022 14:08 #233373 by chuben
Replied by chuben on topic ohm sensor
Hello, I have done what you have told me and I still do not have an Ohminco sensor, what else can I do? I'm going crazy.

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28 Jan 2022 17:14 #233387 by Aciera
Replied by Aciera on topic ohm sensor
Seeing that you are struggling with your hal setup, you might want to attach your current hal and ini files to your posts. Otherwise it's impossible for anybody to figure out what you have done and where the problem could be.
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28 Jan 2022 21:06 - 28 Jan 2022 21:08 #233409 by chuben
Replied by chuben on topic ohm sensor
Esta es mi configuración de Hal e Ini a ver si alguien me puede ayudar. Gracias  .

File Attachment:

File Name: custom_2022-01-28.hal
File Size:1 KB

File Attachment:

File Name: PLASMA_Lin...1-28.ini
File Size:6 KB

File Attachment:

File Name: PLASMA_Lin...nsor.txt
File Size:14 KB
Attachments:
Last edit: 28 Jan 2022 21:08 by chuben.

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29 Jan 2022 05:12 #233419 by rodw
Replied by rodw on topic ohm sensor
There seemed to be some language issues.
Some pin names had been changed which made no sense as the code is only in english

rename the attached to custom.hal and see how you go.
Attachments:

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29 Jan 2022 18:58 #233463 by chuben
Replied by chuben on topic ohm sensor
 

File Attachment:

File Name: Errorlinuxcnc.txt
File Size:9 KB
If I change what you tell me I get this error.
Attachments:

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29 Jan 2022 19:37 - 29 Jan 2022 19:37 #233471 by rodw
Replied by rodw on topic ohm sensor
Sorry, there was a typo in the example Phil suggested that I did not pick up.
Try this one.

 

File Attachment:

File Name: custom.hal...1-29.txt
File Size:1 KB


When you are setting up a machine, always run linuxcnc from the command line so errors are printed on the display.
Linuxcnc will usually tell you the line number and error.

./custom.hal:41: Pin 'ohmicsense-on' does not exist
Attachments:
Last edit: 29 Jan 2022 19:37 by rodw.
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