That would make sense. Years ago, since my ELS has a spot for a CAN bus driver chip, I wrote a CANopen module for it that treated it simply as a display and keypad.
Supported simple PDO messages with message #'s rather than strings to keep bus traffic to a minimum. So if you want to display something like X Axis Position on the first line and that was string #5 then you'd tell it to display string #5 on line 1. Line 2 might have the value and another string for units. One PDO with only 8 bytes could therefore fill a 4x20 line LCD display with information. Key presses also caused PDO messages with the appropriate codes. I don't remember if I accessed the MPG knob. It would have to generate PDOs on change and report absolute position. Creating a driver for Linux CNC that operated as a separate task and ran with a connection to the "localhost" plus used CANopen messaging to access the display/keypad could be done pretty easily. Now if I only had the time. Work-work just picked up this last week and looks to be keeping me busy for a month so all the hobby stuff falls by the wayside again. John > -----Original Message----- > From: andy pugh [mailto:bodge...@gmail.com] > Sent: July-29-18 10:53 AM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Slaved axis > > On 29 July 2018 at 18:25, John Dammeyer <jo...@autoartisans.com> wrote: > > > If I understand the code correctly it treats the display as if it's > > connected via > Ethernet to "localhost", "port 13666" so I'm not sure how the interface is a > Serial > or USB. > > Possibly through a driver. I think that Matrix Orbital might still > make that specific display, but they are pretty old-school and > expensive now. > > -- > atp > "A motorcycle is a bicycle with a pandemonium attachment and is > designed for the especial use of mechanical geniuses, daredevils and > lunatics." > � George Fitch, Atlanta Constitution Newspaper, 1916 > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
