With respect to limit switches the README for the BBB-DB-25/26 states:





*"This configuration drives a standard 4-axis system using the PRU forhigh 
speed step/dir pulse generation and a Xylotex BBB interface board.  
Theinterface board sets up the STEP/DIR/Limit as:XS-2, XD-3, XL-11, 
YS-4,YD-5, YL-12, ZS-6, ZD-7, ZL-13, AS-8, AD-9, AL-15The STOP Input is Pin 
10 and the Enable Input is Pin 1"*

*But the HAL file has the inputs configured as Home Switches. For example:*

*#(JP) Add home switch input on DB25-11*
* net home-x bb_gpio.p8.in-10 => axis.0.home-sw-in *

I'd like to put all the axis limit switches in series and run them into 
DB25-15 since the rotary axis doesn't have a limit or home switch and then 
assign that to limit switches for al axis.

I would provide a mechanical switch to override the limits so it's possible 
to move off a limit switch.  Or maybe there's a configuration way to ignore 
the limit.

Or is the general approach more like putting all the limit switches in 
series with the DB25-1 to DB25-10 connection in series with the ESTOP?

Then the momentary button is pressed to override and a jog button used to 
move back off the activated limit switch? 

Am I missing something or is there some sort of net limit-x bb_gpio.p ... 
statement that can be used?

Thanks
John



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