LO-X7 XY Limit Switches Inop
Posted: Mon Jun 25, 2018 7:12 am
I’ve upgraded my K40 over the last week with the LO-X7 DSP, LO-60W PSU, and the LO Z-axis table … potentially a very nice setup. Finished wiring up everything over the weekend and all is work perfect with the exception of the XY limit switches.
I have hard mounted (i.e. with screws) mechanical switches, currently wired for Normally Opened … and have verified continuity (repeatedly) and am convinced that the switches are good. The switches are connect to X-/Y-/GND on the controller.
The only software setting I have changed, at least for this, is in the Manufacturer Parameters, to enable Hardware Limits for both the X and Y. I’ve actually tried it both enabled and disabled with no change.
One strange thing while I was trying various things to get it working; I hooked up another limit switch on the X+/GND (it was one I had lying around wired up for Normally Closed) and with it in place the X-/Y- switches started responding. OK, since this switch was N.C., I took it out and just replaced it with a jumper wire to see if I could reproduce it … nope, back to not working. In fact, even putting the extra switch back in (which really shouldn’t be required) I could never reproduce my one time success.
I’m sure I’m missing something simple here … limit switches are pretty basic and I’m not a complete newbie to X/Y/Z systems (not an expert either), so I would welcome any suggestions. I’m not to the point of calling into question the DSP controller (yet), but I’m running out of ideas.
Thanks in advance for any help,
Frank
I have hard mounted (i.e. with screws) mechanical switches, currently wired for Normally Opened … and have verified continuity (repeatedly) and am convinced that the switches are good. The switches are connect to X-/Y-/GND on the controller.
The only software setting I have changed, at least for this, is in the Manufacturer Parameters, to enable Hardware Limits for both the X and Y. I’ve actually tried it both enabled and disabled with no change.
One strange thing while I was trying various things to get it working; I hooked up another limit switch on the X+/GND (it was one I had lying around wired up for Normally Closed) and with it in place the X-/Y- switches started responding. OK, since this switch was N.C., I took it out and just replaced it with a jumper wire to see if I could reproduce it … nope, back to not working. In fact, even putting the extra switch back in (which really shouldn’t be required) I could never reproduce my one time success.
I’m sure I’m missing something simple here … limit switches are pretty basic and I’m not a complete newbie to X/Y/Z systems (not an expert either), so I would welcome any suggestions. I’m not to the point of calling into question the DSP controller (yet), but I’m running out of ideas.
Thanks in advance for any help,
Frank