Equipment:
UC300ETH + EB1
existing limit/home switches - N/O Microswitches, 5 of them all individually connected to X103-X107 (X-, X+, Y-, Y+, Z-)
Works just fine, except the microswitches were an afterthought by previous owner and they are mounted on bit of scrap metal and wires are haphazard.
I'm rebuilding the electronics (so far the UC300ETH/EB1 has replaced a USBCNC knockoff and I have sourced some proper equipment for safety circuit etc) and wanted to upgrade to prox sensors so I ordered a few NPN N/C 6-36V sensors as pictured in the 3d printed mount.
I set this up on x109 and functionally the switch is working fine. LED is lit (both on sensor and the UB1) until some metals approaches, then the LEDs both go out. I switched the Y- limit to use x109 and tried homing, using a bit of metal to manually trigger it before the gantry got there and it all worked just fine.
When I ran it for real however, the gantry approached, it DID detect and back off, but it doesn't back off far enough to untrigger (open in this case) the sensor, so after homing, the machine goes straight into limit stop. I have to override limits and jog off...
I tried setting the offset but that just sets Y to -2 (for example) and the gantry stayed stuck at -2 in limit stop.
I can't see anywhere to make UCCNC actually move back from the limit switch a set amount - surely there is an option and I'm just being blind? Oh, I am using Gerry's 2017 Screenset.
Any advice appreciated.
Oh, while I am here, since I have heaps of inputs, is there any benefit to running the X+ and X- (and Y+/Y-) in series, so there are only 3 ports used for limit/home switches? I was going to just connect 5 individually for the sake of simplicity.
Regards
N