[CROSSHATCH]

Hello, I'm running a Taig cnc using EMC2. I'm in the process of install my new BOB from cnc4pc, a multifunction board that will control everything. As far as I'm concerned, I think too run my coolant after it's hooked up too my BOB is in each of my files, too place the command for turning coolant on and off.

Is m8 correct coding that will work with EMC2 for coolant or is there something I'm missing?

Please let me know.


-Jason

[ger21]

Not sure about EMC, but M7 is usually mist coolant, M8 is flood coolant.

[CROSSHATCH]

Ok, Just making sure. I thought it was M8.


-Jason

[cyclestart]

If you're running the typical ubuntu install this is easy to find.

applications > cnc > g code quick reference

should open up in the web browser

[Al_The_Man]

M8 is commonly Coolant on, M9 coolant off, but it is what ever the MTB makes it.
Al.

[CROSSHATCH]

Did some tests. EMC skips m8 and m9 in my file allowing no coolant too turn on or off? What the heck? Coolant is designate too Pin 1 and Pin 1 works because when I set it as E-Stop, and enable/disabled it, the coolant turned on and off.

-Jason

[samco]

How is your hal file setup?

should have 2 lines similar to this
net coolant-flood <= iocontrol.0.coolant-flood
net coolant-flood => parport.0.pin-01-out

[CROSSHATCH]

I need too access my Hal, but saying this like a Noobie, I have never really got into it and changed anything. How too I view my Hal file.


-Jason

[cyclestart]

How too I view my Hal file.

Same as any other text file, a gui for this is still in development unless I'm behind the times.

I'm still using hand written configs so take the following fwiw. Look in the emc2/configs/ for the directory created by created by stepconf. In my-mill.ini (if you went with the default name) 2 HALFILES are called, my-mill.hal and custom.hal. According to the readme, custom.hal is for user created commands to prevent stepconf from overwriting. Watch out for conflicts.

Hope this helps in some way.

[CROSSHATCH]

I'm not sure whats going on. Sorry, was away enjoying the Epic snow of Jackson Hole Wy last week. Anyway, I have gone into Spetconf many times, but I must be skipping something. I still have not figured out why EMC won't read the M8 M9 command.

Too Samco, I do not know how too access what you showed ....Noobie here with EMC.


-Jason

[Regnar]

Under the Stepconfig wizard did you try and invert the signal. Its a little check box next to the Pin setup. I want to say its on the second screen before you get the x axis. If I remember correctly it will take it from 0v to 5v. Im learning myself so take the advice with grain of salt.

[CROSSHATCH]

No, when I invert it. It will automatically go on and stay on when EMC is open, it's not reading the M8 / M9 coding.

UGH....


-Jason

[Zig]

Jason,

Post a sample of your non functioning M8/M9 code.

As you have indicated inverting the bit seems to tourn hardware on sugesting the config might be OK.

Zig

[CROSSHATCH]

I'll post it in a bit, but doesn't inverting the pin just mean that no matter what, a signal should go through, regardless what the code says?

Could it be my post processor?? I'm just throwing that our there...

-Jason

[Regnar]

It means that it will output 5v instead of 0v constantly. So when activating M8 it should shut off or goto 0V
This is straight out of the user manual

15.4 M7, M8, M9: Coolant Control
To turn mist coolant on, program M7.
To turn flood coolant on, program M8.
To turn all coolant off, program M9.
It is always OK to use any of these commands, regardless of what coolant is on or off.

This last sentence gets me thinking that maybe you need to have the coolant box checked on the manual page to be able to use M8 or it could also mean that if its already on it wouldnt matter if M8 is used. Either way you know that the relay works you just need the pin to become active when programmed to. I dont think its your post processor M8 is M8 no matter who writes it.

[CROSSHATCH]

When I do check it though, as soon as EMC opens, regardless of what program is loaded, the coolant pump goes on, I have not checked though with m8/m9 in the code at this point. Unchecked, nothing happens....M8 in my code though does nothing either.


-Jason