PMDX Forum

General Category => SmartBOB controllers and dedicated accessories => Topic started by: Rambo on August 06, 2020, 11:32:21 AM

Title: Squaring the Gantry on the PMDX-424 without functionality
Post by: Rambo on August 06, 2020, 11:32:21 AM

I'm attempting to find a solution to squaring the gantry on a AVID CNC CRP4824. The 424 does not have a gantry squaring feature so I have thought of two options:

1. Using LUA I would have to un-map the two Y stepper motors Y1, and Y2, Move them both to Y home waiting for both proximity sensors to trip and then once this is complete, establish a machine home and re-map the two motors back to the Y axis. Am I missing anything?

2. (Current method) where I move the axis manually to a known alignment fixture. This is only an eyeball method and works "okay" now.

Does anyone have any better methods? I'm digging into the LUA code base and it could take some time to get a working script.

Thank you

Title: Re: Squaring the Gantry on the PMDX-424 without functionality
Post by: mckinleyrb on November 30, 2020, 08:41:01 AM

I created a separate profile for squaring where I assigned the gantry motors to different axes and then homed them at the same time. The issue I am running into is that when I close that profile and open my plasma cutter profile, the motors dont seem to remap back to being master/slave on the X unless I power off/on the pmdx424

Title: Re: Squaring the Gantry on the PMDX-424 without functionality
Post by: mckinleyrb on December 09, 2020, 04:26:57 PM

Add a new button on the screen and add the code I wrote as shown in the link below to the PLC, button, and Screen Load scripts.  Let me know if it works for you.

https://www.machsupport.com/forum/index.php?topic=44044.new#new

Title: Re: Squaring the Gantry on the PMDX-424 without functionality
Post by: neilD321 on June 03, 2021, 05:17:16 AM

Hey @mckinleyrb,

I just replied to this in the Mach forum...