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Topics - ontariocnc

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General Mach Discussion / X axis incorrect
« on: April 12, 2010, 10:21:34 AM »
I installed the newer version of Mach 3 into my Red Cam machine. When I send the machine home it heads to the top right hand side of the machine rather than to the upper left hand side. I went into the pins and ports and switched the machine to x dir low active and while it rectifies the direction the machine travels using the keyboard it still goes to the top right when home is requested. I went into homing and reversed the home and then the home works but the keys now work opposite. Is there something that I am missing?


The main problem is that the z axis direction is wrong and that the machine goes opposite to the direction you tell it.


Thanks very much


Rodney

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For the last few months I have been struggling with my red-cam cnc machine. The first issue is that it keeps driving the Z axis down past the G code point. I program it to go G01 4.0 and it heads down until it gets to this point at which time is pauses for a nanosecond and then it continues down until the lower limit is tripped. The funny thing is that it is not repeatable. If I run the program 10 times it might perform it correctly 3 or 4 times.

The second issue is that it seems to loose the x axis position as well. On Thursday I had a student writing his favorite band name on a piece of wood. He created the file on Artcam and brought it in to Mach. When I checked the code on a simulator it worked perfectly but when we ran it on the machine it failed to cut it correctly. Most of the engraving worked well but the final pass shifted ½ to the left and created a type of shadow effect.

I have checked all the connections and I cannot see anything that is obvious. Does anyone have any suggestions as to where I could start to diagnose this? I was thinking about upgrading to the latest version of Mach as I am suspecting that the software is at fault.


Thanks


Rodney

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