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Messages - Les Peterson

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General Mach Discussion / Re: New Computer, Now Mach won't run my machine!
« on: December 24, 2007, 01:32:31 PM »
The way I understand this is that I should be able to wire all the limit switches in parallel to one input on the computer. I would use indicator lights to let me know which limit has tripped the machine. Then I will use three inputs for the X/Y (dual X, one Y) home location. Since these are digital inputs and not anylog I should be able to use relays that the prox sensors will close and the common/NO pins on the relays for the input to the computer. Am I correct in my thinking?

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General Mach Discussion / Re: New Computer, Now Mach won't run my machine!
« on: December 24, 2007, 12:43:34 PM »
Thanks for the pointers RC. I downloaded that manual you listed above and have found in very usefull.
Am I correct in the assumption that for my 4x8 foot router that I should have the homing switches located in the middle of X,Y axis travel? I would assume that this should give me the most accurate machine movement over its length of travel.
Also, since I will have to order some more proximity sensors and opto isolator relays is there a better place than Automation Direct?

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General Mach Discussion / Re: New Computer, Now Mach won't run my machine!
« on: December 24, 2007, 11:30:53 AM »
Thanks for all the helpfull information. I have the machine rolling now.
One other question, my X axis is dual steppers direct mount rack and pinion style. Is there any benefit to slaving the A axis in Mach rather than using the same step/direction pins?
Right now both controllers are wired to the same pin on the DB-25 plug and I have noticed a large error when cutting circles.

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General Mach Discussion / New Computer, Now Mach won't run my machine!
« on: December 23, 2007, 11:35:48 PM »
I recently had to change the computer out due to failure of the old one (boot disc failure) and the new one is using the same OS (WinnXP with SP2)  as the old one.  I am (or was) controlling a CNC router with Mach 3 ver 1.90. Yesterday I downloaded the latest version and am still having the same problems. I have also added an PCI011H-EP1 parallel port card with the latest drivers.
Attached is my xml file. Hopefully someone can point me in the right direction as I am lost at this time.
LP

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