Messages

911

General Mach Discussion / Re: limit switches/ estop?

« on: March 12, 2009, 08:55:53 PM »

Any particular value? Is it possible the capacitor can damage the board?

912

General Mach Discussion / fastest1's Xml

« on: March 12, 2009, 08:54:23 PM »

did it work?

913

General Mach Discussion / Re: limit switches/ estop?

« on: March 12, 2009, 07:47:45 PM »

Sorry empty file was sent, not really sure how to convert it. It is too large to post. What would the capacitors do? The board was inspected by an excellent electronics repair person who is a friend. No apparent errors and it has pased all electrical tests with no issues.

914

General Mach Discussion / Re: limit switches/ estop?

« on: March 12, 2009, 07:43:05 PM »

Will this tell you anything?

915

General Mach Discussion / Re: limit switches/ estop?

« on: March 12, 2009, 06:11:28 PM »

Disconnected estop and limit switches, disabled estop input. ran jumper as suggested. Still falsely triggered limit. Though with a 2000 debounce I did get a longer delay. In ports and pins should z++, z-- & z home be enabled? It never responds if active low is selected.
OL I tried that last night and it didnt help. I even used that switch and switched to active low. Seems like it still triggered

916

General Mach Discussion / Re: limit switches/ estop?

« on: March 12, 2009, 01:25:37 PM »

I thought I had responded. Anyway landed the shields to the chassis ground, and tried debounce at 2000 and then again at 4000. The delay before self triggering was longer than with no debounce but not much. Any other ideas? Again as long as power is off, estop and limits respond like they should, or as desired.

917

General Mach Discussion / Re: limit switches/ estop?

« on: March 12, 2009, 10:58:55 AM »

I cant wait to try it! Unlike old or new political parties in power, you do instill HOPE! John

918

General Mach Discussion / Re: limit switches/ estop?

« on: March 12, 2009, 10:01:51 AM »

Hood
Thank you so much for the timely responses. I did think about the repercussions of using the switch I had. It is a switch with both options (NC/NO simultaneously) however I am using the NC side to depower the spindle when pressed and the other side triggers the mach to stop. The nc side of the switch also shows 110v so I didnt want it to connect with the board. I am going to install a toggle switch on the spindle also to allow safe tool changes without interuption of the gcode. If this is all possible. I believe it is. I will test the debounce setting in an hour or so, would that have an effect even if the switch was never touched? It seemed to do it regardless when/once I powered up the box. Seems to work great prior to powering up. It does sound like an induction/interferernce problem or my limited understanding of it. Not being a machinist/electronics/computer/cad student or tradeperson (I do have quite a bit of low voltage experience, media systems and window covering automation) it has been funny when you realize the vocabulary in all of the technical jargon and what it finally starts to mean after endless nights of reading in many fields. I spent so much time testing my HCNC pro board and mach software trying to get the steppers to jog that by the time they jogged, I understood so much more about the software. All of those problems were because I used a  defective ribbon cable between the board and the chassis jack I insisted on using. A little anal about appearance. Why else would we be interested in any of this otherwise? I have a problem gettiing absorbed deeply and not sleeping/eating acknowledging anything else til completion. I thought it was exciting, that is why I commit. Sorry for the life story and Thanks again for the responses. I do notice you help many people here as I have been reading as a guest for quite a while.

919

General Mach Discussion / Re: limit switches/ estop?

« on: March 12, 2009, 07:49:29 AM »

Yes the led does light up when the switch is triggered. Though I am using shielded wire, I havent tied the grounds down on the limit switch yet. I do have the steppers grounded so I thought it would be acceptable for the test. I was wondering if using a n.o. switch for the e stop and a n.c. string of series connected limit switches were conflicting with each other because of a shared ground. The estop is on pin 10 and limits for z are on 11. Is that an issue?

920

General Mach Discussion / limit switches/ estop?

« on: March 12, 2009, 02:22:41 AM »

I just built a HCNC Pro 4 axis controller and all is working except the limit switches. I think its a setting issue not hardware. Ok right now I have a mushroom switch that is n.o., closing the circuit makes mach3 stop via T5 grd and pin 10. That all works great. I can reset the flashing red icon on the screen after pulling out the mushroom and everything works great. I have estop enabled and set to active low. NOW if I hook up T5 ground and pin 11 to a set of series wired switches (continuity til switch is pushed). It will work according to mach3 as long as the hcnc is not powered up? The second I actually power up the board the limit switch flashes even if nothing touched it. I cant seem to reset it. Just stays flashing. I even tried it while disconnecting and disabling my estop, still triggers a limit warning and all control stops. What am I missing? This is just the z limits at the moment. I am
using 24/2 shieded. I have tried with active low selected and not selected. Seems to be no difference. Is there a switch/selection to jog off a limit? Everything
I read acted like a series connected set of switches were the cats meow. ?