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I just gave it a second thought.
a relay with a 220 volt coil on the compressor is a bit risky. 
If your business grows and you employ people an uninformed person could connect 220  volt on the wrong wire and then probably blow the mesa board.

i think I will go with the pressure sensor. 
So far all the analog inputs of the mesa board are free. Advantage I have full control of hysteresis of the compressor as well. Disadvantage I need to put an electric unloaded valve. I guess any normally open pneumatic valve will do.

I am getting this error when I try to install the main package

sudo apt-get install '/home/dylan/Downloads/linuxcnc_2.9.3_amd64.deb'
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Note, selecting 'linuxcnc' instead of '/home/dylan/Downloads/linuxcnc_2.9.3_amd64.deb'
The following packages were automatically installed and are no longer required:
  libgpiod2 python3-serial python3-yapps
Use 'sudo apt autoremove' to remove them.
Suggested packages:
  onboard
The following NEW packages will be installed:
  linuxcnc
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/25.5 MB of archives.
After this operation, 89.9 MB of additional disk space will be used.
Get:1 /home/dylan/Downloads/linuxcnc_2.9.3_amd64.deb linuxcnc amd64 1:2.9.3 [25.5 MB]
(Reading database ... 185376 files and directories currently installed.)
Preparing to unpack .../linuxcnc_2.9.3_amd64.deb ...
Unpacking linuxcnc (1:2.9.3) ...
dpkg: error processing archive /home/dylan/Downloads/linuxcnc_2.9.3_amd64.deb (--unpack):
 trying to overwrite '/usr/share/applications/linuxcnc-documentation.desktop', which is also in package linuxcnc-doc-en 1:2.9.3
Errors were encountered while processing:
 /home/dylan/Downloads/linuxcnc_2.9.3_amd64.deb
N: Download is performed unsandboxed as root as file '/home/dylan/Downloads/linuxcnc_2.9.3_amd64.deb' couldn't be accessed by user '_apt'. - pkgAcquire::Run (13: Permission denied)
E: Sub-process /usr/bin/dpkg returned an error code (1)

The whole battle here is to stop LinuxCNC before compressor starts, so you do need another sensor set to trigger at a bit higher than the compressor low pressure, then you can use the existing switch to trigger when compressor stops.

Thank you so much 
You come faster than I could work out a concept. 
I do not fully understand the code.

does it stop at the end of a cycle?

Is there any code to start the compressor?

I was thinking of a simple way to use the original pressure switch on the compressor. 

I could add two Relais on the compressor. 
one with a 24V coil in series with the pressure switch.
one with a 220 V coil that closes when the pressure switch wants to start the compressor. 

So when the pressure drops the 220V relay is activated and sends a signal to Linuxcnc. 
linuxcnc pauses the program. And turns on the second relay. To start the compressor. 

Is full the The 220v relay gets turned off by the pressure switch. 

linuxcnc turns off relay2 and resumes cutting. 

The only question is will the Relay with the 220Volt coil turn off when the voltage drops during compressor startup?

 

Thanks for your answers, I'll try it tomorrow.

Yes it would work, just get a bunch of 1MOhm resistors 2W each, at least 6 to be on the safe side, should be very cheap.

The spindle and servo should be identical connections. but the toshiba version i remember are different than sanyo. There is another thread on a 211 here than might help.

As for vibrating, If you have no signal connected it is floating, and it could be seeing the noise as a motion command. So I think you need to connect a signal.

I don't know what r/s210 are, ET is enable I think. Sadly I only have the user manual for the 225/215, but not the electrical diagram.

Keep this one, it has pictures and less "techno babble".

I don't think I saw the pwmgen 04 enable being connected
in your hal file

Cant do this anymore bye all wrote:

tommylight wrote:

ytutgfhfgfghfg

 
Is that the i5 or Core Duo one ?

LOL

Cant do this anymore bye all wrote:

I tried the same thing a year or 2 ago.

Where is it?
I did search for that and another one with "duzie" in the tittle but could not find them, strange as i did find the "duzie" one a few days back!
I can try to gather all those into one topic, and yes i am aware this would be better in the wiki, but i do not need anymore logins, have to much as is.
-
Will delete this post and other "non related" later as we get a chance to read them.

See at the bottom of the picture, it does support SPP, tristate and EPP.
This is the PCI-E version from the link i posted before, there is also where to find such cards.

1. do not use sudo, i do not think it is required
2. try this
mesaflash --addr 10.10.10.10 --device=ETHER --readhmid
If you did set the jumpers for 10.10.10.10 and the PC network accordingly.

tommylight wrote:

ytutgfhfgfghfg
 

Is that the i5 or Core Duo one ?

Regarding Lenovo ThinkCentres this is the low profile part number for a cable 45j9598

Prices can vary from USD $10 - $20, may seem on par or a little more than a physical card, but way way easier to setup. Beware a std 2x13 to db25 cable will not work as there is the cable would seem to short a pin or some other such trickery that I just haven't looked at. what happens is that the Super IO chip, lacking a better description, is informed there is a cable attached and then enables the Parallel Port setup in the BIOS.

Below is a link to an example.



www.ifixit.com/products/45j9598-lenovo-parallel-cable-280mm

If you have a ThinkStation and want a simple solution and don't want to have a Black Mass under a full moon, unless of course you're Norwegian and you have a bent for a particular genre of Music, this is the way to go. If you are one of the above mentioned, you still can have your Black Mass and use the cable.