Preben Mikael Bohn wrote: >>Preben Mikael Bohn wrote: > > Which would only be true if EMC had a 422 interface communicating with > the exact same protocol to the board I am using. And since this is not > the case I am really asking either how to make such a module or how to > interface with an external "driver" already doing the protocol work on > the 422 interface. > I think there are some RT drivers that use the serial ports. This is at the experimental stage, still, I think.
>>The HAL pins out of the EMC "front end" just send position as >>floating-point coordinates in "user units", ie. mm or inches. > > > I don't think I got this? HAL is the "hardware Abstraction Layer", a language-controlled interface between the G-code interpreter and the motion hardware. (I'm simplifying a bit, but basically that is what it does.) So, you can connect various "pins", such as axis position, to the drivers that make hardware move to that position. If you have a driver that converts position commands to the right serial character strings to get the motion, others more experienced than myself can show you how to tie that in to the right HAL wrapper to accept those position command from EMC. Once given a working framework, I'm just barely conversant in how HAL works. Jon ------------------------------------------------------------------------- Sponsored by: SourceForge.net Community Choice Awards: VOTE NOW! Studies have shown that voting for your favorite open source project, along with a healthy diet, reduces your potential for chronic lameness and boredom. Vote Now at http://www.sourceforge.net/community/cca08 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
