Messages

1

General Mach Discussion / Re: No movement all 3 axix's

« on: August 12, 2018, 08:50:23 PM »

I had my head in a very dark place

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General Mach Discussion / Re: No movement all 3 axix's

« on: August 12, 2018, 08:33:50 PM »

Craig --  I got it - it works your suggestion to check the level of the direction pin Got me in the ballpark to find the problem. To make a long story short the step and direction pins in the configuration did not match the wiring. This is why if I plugged the parallel cable from one CNC to the other one worked and one did not, gave you the impression that the config and software were correct. The fact that we did not have the correct files that went with the machine when it was built caused all the problems.

MANY THANKS FOR YOUR HELP

3

General Mach Discussion / Re: No movement all 3 axix's

« on: August 12, 2018, 06:07:16 PM »

The direction goes from 56.5 mv in one direction to 3.31 v in the other.

The spec on the 251X says the direction and step  can be driven with 3.3V or 5V logic inly input current will change from -1ma to -.67ma for login "O"

I really want to thank you for help on this problem.

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General Mach Discussion / Re: No movement all 3 axix's

« on: August 12, 2018, 02:54:58 PM »

Yes i have a mulit meter

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General Mach Discussion / Re: No movement all 3 axix's

« on: August 12, 2018, 10:35:15 AM »

In answer to the question I just move the parallel cable from one CNC to the other.

The E-Stop does activate the software

There are no electronics on the Break out Board ( BoB ) I am posting pictures of the Bob and drivers.
This CNC worked with the wiring as you see in the pictures. The cut wires on pin 11 & 21 was for a probe we were trying when we built the CNC.

Will call Gecko tomorrow see what help they can give to test the drivers stand alone.
 

6

General Mach Discussion / Re: No movement all 3 axix's

« on: August 11, 2018, 05:42:27 PM »

I have 2 CNC machines my old one and the one I am trying to get to work. The one with the problem has been in storage for 2-3 years. After all the testing I have done I think the drivers are defective. This is hard for me to accept, all 3  bad. I did take the parallel cable and moved it to my CNC and it worked fine ( both CNC’s have gecko drivers 250/250X ) This is why I think the configuration is correct. Not having a scope I looked at the speed and directions pins of the Gecko drive with a VOM, I can see some change as I jog the steppers.I have been waiting for Gecko to get back to me as how to check the drivers for proper operation.
I did check the input and direction wiring

Below is the results from the driver test

Driver Test

Interrupt      00
Pulse/sec      23690
CPU Speed      2999
Apic Timing Constant   8442
Short time      41   4878
Longest         43   90 ( Numbers keep changing )   

7

General Mach Discussion / Re: No movement all 3 axix's

« on: August 10, 2018, 05:03:59 PM »

Mach 3

parallel port

windows XP

32 bit

8

General Mach Discussion / No movement all 3 axix's

« on: August 10, 2018, 03:12:58 PM »

Need help – I was given a home made CNC that has not been used in a few years. The configuration is not available for Mach3. Using Gecko model 251X drivers and a 30 V power supply. When connected I get the steppers to energize but can’t get any movement on X Y or Z. I have tried changing configuration no help, the only thing I did notice if you hold the stepper shaft and try to Jog the stepper you can feel like 1 pulse but no movement. I do not have a scope to check input signals. I am at a loss as to what to do next.

9

General Mach Discussion / Re: changing Jog

« on: January 20, 2017, 07:07:48 AM »

Thank you for the info - I looked all over for the answer

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General Mach Discussion / changing Jog

« on: January 19, 2017, 05:20:07 PM »

I am having a problem changing jog distance, I cant find how to open the Jog controls shown on page 3-6 Figure 3.3 Jog controls