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X axis stopped working
« on: February 06, 2010, 01:14:02 PM »
I have been running Mach3 with Dell 800 for 3 months on a 4 axis machine. The X axis stopped working suddenly.

I have checked the LPT port motor output pins for voltage. Y, A, and B look the same. DIR 0-5V, Step 0-50mV. Y, A, and B work. X stopped working. DIR shows 0-5 v Step shows 80mv -130mv at the port pin. DRO moves but no motor movement.

I have verified the X axis wiring and motor are good on the other axis.

I have check the LPT port with a printer and it works.

The strange thing is if I swap the Step and Dir pins in the setup I get good voltage readings. (but my driver board can't use it like that).

Thoughts appreciated.

(I would like to get some sleep.)
Thanks

 


Re: X axis stopped working
« Reply #1 on: February 06, 2010, 01:21:00 PM »
Port 1   0x378                  

Motor Output                     
   Enabled   Step   Dir   Dir Low   Step Low   Step Port    Dir Port
X axis   Yes   14   4   x   x   1   1
Yaxis   Yes   2   17   x   x   1   1
A axis   Yes   3   8   x   x   1   1
B axis   Yes   5   9   x   x   1   1

Inputs                     
Estop   Yes   Port 1   Pin 10    Act LOW         

Output Signals                     
Enable    Port   Pin               
1   1   1               
2   1   7               
3   1   6                           
4   1   6                           

                                 
            
                                 

Offline Hood

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Re: X axis stopped working
« Reply #2 on: February 06, 2010, 02:22:34 PM »
Try swapping the drives around, sounds like a hardware problem.
Hood