Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: rayzsurfer on January 06, 2012, 01:55:46 PM
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I have a DIY CNC Plasma machine that I am setting up, I am using a Gecko G540 controller with X,Y and Z axis. I have limit switches on the X,Y and Z for a while it was working fine. I had set them up as a home reference and I could hit the reference button and the machine would work fine, going to each limit switch and back-off. Well the probem started when I tried referencing again and the Z axis would not move. I assumed I had crashed my switch so I started checking it out but it works fine, even tried a different switch.
I open the controller to check my connections and all was fine. Has anyone had this problem before? Any suggestions?
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Are your limits showing on the diagnostics page? If you press them manually do the LEDs light up?
Hood
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They are and they used to light up, the z doesn't any more.
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If you attach your xml I can look at the config but it does sound like there is a hardware issue.
Do you know if the switches are normally closed or normally open type?
Hood
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Hood I will attach the file when I get home. They are normally open switches. I appreciate your time and help, I have seen you are quite prolific on here with the help.
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Here is my xml file.
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Xml looks ok, except maybe the A axis Home switch is set the same as the Z, I am not sure if that is correct or not as I dont really know what your hardware setup is like.
Hood
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Hood, I found the problem. I was using a DB25 printer cable not a straight through cable. All is well now. On to the next challenge! Thanks for the help.