Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: Carlosf71 on February 06, 2010, 01:14:02 PM
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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
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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
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Try swapping the drives around, sounds like a hardware problem.
Hood