Kudos to you Paul for your high brow and highly diplomatic overview of the EMC/EMC2 BDI/Umbootoo :) frackus. Stable is better. Hunting bugs instead of running a machine dont make money. Looks to me the like the emc users sourceforge list (on the rare occasions I have looked back) has turned into a Umbootoooo support support group in large part. that hardware abstraction layer thing was well intended and all but seems to have added just another file to diddle, that you have to learn how to diddle to get EMC to work for you if the defalt setup wont work for you. Is that faster than moving a few wires in a connector or reconfiguring a drive, likely not. The breakout-I/O-stepper board I made uses the old EMC lpt pinout as the default but will work on the DOS and windoze based controllers to, but I havnt felt the need to try them since I went back to BDI after trying to use EMC2. In fairness I should say they do indicate they have fixed a lot of bugs since I tried it last. rock on paul! Mark On 12/1/06, Paul <[email protected]> wrote:
Hi Alex
On Friday 01 December 2006 17:50, alex wrote:
But can you shed some light on setting limit and home switches? I eyeballed hardware section of the manual for some time and it looks like they are hardwired for this version of EMC ? Are they wired this way: homes - pin 12 limits + -pin 15 limits - - pin 13 ? Also , how can I ignore homing for Z axis?
The home and limit switches are hard coded in to the sources. For many users, this limitation is not a problem, but for others, it is, so there is work afoot to address this and other issues (more on that when the time comes).
As for ignoring the homing on a single axis - If the axis with the home switches use HOME_SWITCH_POLARITY=0, set HOME_SWITCH_POLARITY=1 for the axis without a switch - As long as pin 12 is pulled high when X and Y are not sitting on their respective switches, Z will always be evaluated as "homed". Set the HOME and HOME_OFFSET parameters so that the homed axis does not sit on a switch and you shouldn't have any problems.
Regards, Paul.
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