Homing Y/A Axis Says Limit Switch Triggered

[Stevenson]

To check if the limits cables were broken or not I knew the problem was related to the Y and A axis limits because the problem happens only when I try to home these 2 axis. So I disconnected first the A axis limits cable at both ends and installed a temporary brand new cable. Then I try to home the Y axis and the same message comes up. Did the same for the Y axis and the results was the same. So the message “Limits switch triggered” is not related to broken cables.

If someone can answer my previous post about what the M4++Limits / M4Home message refers to I may understand more and perhaps be able to solve the problem

Thanks

[cropwell]

T

If someone can answer my previous post about what the M4++Limits / M4Home message refers to I may understand more and perhaps be able to solve the problem

M4 refers to the A limits. You can turn off the light by going into the Ports and Pins settings, but you are using slaved Y and A. Have a look at limits and home switches here https://www.machsupport.com/wp-conte...all_Config.pdf

Cheers,

Rob

[Stevenson]

Many thanks for your time Rob,

I printed the Mach3 Mill Installation & Config back in Nov-06-2008 and have read it many times but I didn’t see anything related to “turning OFF the light.. In any case before I turn the lights OFF I would like to know the reason why they come ON in the first place.

I’m retired and I build table cnc all in aluminum as a hobby, the last one I’m working now I think it’s my 9th and my first with ESS, before that one all were with printer port and never had any problems. It takes me about 1.5 years to build and sell one after to recover at least my cost. Yesterday I went thru the ESS config “Noise Filtering of Inputs” and changed the Limits number from 0.00 to 20.00. Then after a re boot I press the down arrow on my keyboard to move the Y (which is slaved to A) and suddenly to Y & A moved BUT the Y went much faster than the A and almost twisted the Gantry to the breaking point before I pressed the E-Stop, quite scary…

So now after 3 successful cuts on this cnc I’m losing confidence on the machine and thinking to remove the ESS and going with a printer port setup like I used to do before. The problem is I can get a desktop PC for $50 but where do I get the Windows OS like XP or Vista to run the desktop? I do have both XP-Pro and Vista DVD’s but I have to register them again with MS and it’s a hassle to do so, I’m thinking my options….Linux it’s an option but I’m not very good with it.

Today I have no time but tomorrow I will go thru all ESS settings carefully to see if I find anything I missed and then I will decide what my next step will be.