LinuxCNC on RPI4b 8GB with P-LCNC Adapter and parallel BOB

so finally i got it to work, there was a problem with my file, the NO_FORCE_HOMNG=1 did the job

I'm also having a problem disabling homing using the NO_FORCE_HOMING=1 setting in my ini file.

May I ask how you got that to work ?

Thanks !

Jay

jay.perez1 wrote:

I'm also having a problem disabling homing using the NO_FORCE_HOMING=1 setting in my ini file.

Where do you have it? It needs to be in the [TRAJ] section. 

Also make sure that the editor you use is not adding windows-style line-endings or other invisible characters. 

(Now that I type that I realise that this is rather asking the impossible "make sure that you can't see invisible things) 

Thanks for your reply Andy.

I'm using the Visual Studio Code to edit my ini and hal files. (I'm aware of the 'invisible' characters in files with formatting features  

I did add the NO_FORCE_HOMING=1 under the [TRAJ] section. At first glance the description of that variable seems to say it will allow you to jog, run g-code, and MDI without first Homing. I'm not sure what its function is but it didn't have the affect I was expecting.

After additional research I finally found a post that instructed you to set both the 'HOME_SEARCH_VELOCITY' and the 'HOME_LATCH_VELOCITY' variables in the ini file to 0 for each axis. This appeared to do the trick though I seem to be getting inconsistent behaviors on some things. ( BTW, I initially had set their values to 0.0000 but this didn't work. Changed them to just 0 and it did work ...) Also, I believe you still have to hit the 'HOME ALL' button for the setting to take effect.

Firstly, having home switches is a _really_ good idea.

If you really can't have them, then setting the search velocities to zero (as you have) and then homing to some sort of reference mark is better than nothing.

You should be able to jog without homing on any system.

MDI and G-code should run without homing if NO_FORCE_HOMING is set, you have correctly interpreted the purpose. (And it just worked for me in a sim config)

Firstly, having home switches is a _really_ good idea.

If you really can't have them, then setting the search velocities to zero (as you have) and then homing to some sort of reference mark is better than nothing.

You should be able to jog without homing on any system.

MDI and G-code should run without homing if NO_FORCE_HOMING is set, you have correctly interpreted the purpose. (And it just worked for me in a sim config)