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Author Topic: Myford cnc conversion spindle readings  (Read 2044 times)

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Myford cnc conversion spindle readings
« on: January 02, 2015, 08:15:42 AM »
Hi All
First of all happy new year to you all.
now I wonder if someone outthere can help me with a problem.
I am converting a Myford Super 7 lathe to CNC and I am having a problem with the spindle DRO reading.
I am setting up mach 3 as Tony jeffries instructions at the follwing

http://www.jeffree.co.uk/pages/ml7-cnc/part-4-files/myfordcncpt4.htm

I have the sensor giving good readings on pin 10 (Useing a scope and moving the drive belts changes the freqency)
so it all looks OK but there is no reading in the True DRO everything else seems to be working .
Iam using mach 3 ver R3.043.066
I would appreciate any help
Thanks
Bob

By the way in the diagnostics screen the index led flashes as the spindle turns.


« Last Edit: January 02, 2015, 08:19:46 AM by redpiperbob »
Re: Myford cnc conversion spindle readings
« Reply #1 on: January 02, 2015, 09:01:24 AM »
A simple thing that many forget to do Bob is click the "Spindle" button on the screen.  Mach needs to know that the spindle is turned on for the DRO to display RPM regardless of whether or not the spindle is controlled from Mach by a dedicated speed control or relay.  Also in Turn, you can press 'S" on the keyboard to do the same thing.

Ignore this if you already knew it but I was puzzled by the same issue when I first got mine running.
Milton from Tennessee ya'll.
Re: Myford cnc conversion spindle readings
« Reply #2 on: January 02, 2015, 09:15:28 AM »
Hi Dickiebird
thanks for your reply
When i click the pindle button or the's' key the STrue DRO  goes to 1 then goes back to 0 when I let go of the button.
Bob

Offline Hood

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Re: Myford cnc conversion spindle readings
« Reply #3 on: January 02, 2015, 09:25:37 AM »
If using the parallel port you will also need Spindle Relays set up. Even if you are not using relays you will still have to enable and set to an output. You can set the same output for both M3 and M4 and obviously you will need to enter the number of an output you are not using for something else.
Hood
Re: Myford cnc conversion spindle readings
« Reply #4 on: January 02, 2015, 09:44:04 AM »
Hi There Hood
 
Thanks for the repy
I have set the output 1 and 2 in the output screen to port 1 pin16 and 17
and enabled the M3 M4 in the spindle menu and guess what it all works
 thank you for your help
Bob
By the way I live in Inverness North of Scotland
Happy new Year
Bob

Offline Hood

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Re: Myford cnc conversion spindle readings
« Reply #5 on: January 02, 2015, 10:22:52 AM »
Not too far away then, the better half was there the other week, was up for a few days with her sisters for their seasonal get together :D

Hood
Re: Myford cnc conversion spindle readings
« Reply #6 on: January 09, 2015, 02:32:26 AM »
Hi Hood sorry not to reply. (been away with work)
anytime you are coming up drop me an email we could meet up for a coffee  ;D
Bob