On 09/08/2015 07:30 PM, Jeshua Lacock wrote: > Greetings, > > I am trying to add a 4th axis to my USC from Pico Systems. My set of config > files is at: > > <http://3DTOPO.com/pico-univstep.tar.gz> > > I defined the new axis as W and set it up the way the other axes are setup as > far as I can tell. I didn’t set up the limit switches because I wasn’t sure > what pins to use. > > Anyhow, I can’t get Axis to launch with the W enabled. I get the error: At least with the old LinuxCNC, you had to define enough axes (without skipping over any) to include the last axis name. So, I think you might need to set it for 9 axes : X Y Z A B C U V W (note that R and P are NOT legal names for axes, these names are strictly defined by the RS-274 language.) > > > > BTW: I assume the 5V pin on the stepper drive goes to the 5V on the USC, but > where does the enable go (been a while!)? > > If your stepper drivers have a common + terminal, then that is right. If it has opto-inputs that can be split, it may be better to connect the minus of the input optos to GND, and the + inputs to the step and dir outputs of the USC board. Note that the step output of the USC is low for no-step and high for the step pulse. This makes a difference as some stepper drives do not like having the DIR input change while the STEP input is "on", which could be with the optoisolator's LED lit.
Jon ------------------------------------------------------------------------------ Monitor Your Dynamic Infrastructure at Any Scale With Datadog! Get real-time metrics from all of your servers, apps and tools in one place. SourceForge users - Click here to start your Free Trial of Datadog now! http://pubads.g.doubleclick.net/gampad/clk?id=241902991&iu=/4140 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
