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Author Topic: Triple edge zero finding plate problems  (Read 3108 times)

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Triple edge zero finding plate problems
« on: July 31, 2017, 11:11:21 AM »
Hi, I recently found a Mach3 script by Allen Massey for an edge finding plate.
I downloaded the script to the hidden Auto zero file and wired up the breakout board as described. I activated the probe in ports and pins and began the testing. On the diagnosis page the digitise LED failed to light when I touched the probe to ground. As far as I understand I take a wire from my port (port 13, the only port free) to the probe and a second wire from the ground pin on the same  pin 13 to the edge finder. Touching the two together should cause the LED to light. Any ideas?

Secondly I note that the script I have received is in inches whereas my machine is set to millimetres. I presume that all inch references will have to be converted to metric. I am not familiar with Mach 3 code and I wondered if there is anyone out there who is familiar with the Allen Massey script who could advise me which parts of the script need to be altered.

regards Ian

Offline Tweakie.CNC

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Re: Triple edge zero finding plate problems
« Reply #1 on: August 01, 2017, 01:38:44 AM »
Hi Ian,

Check that you have Enabled and set Probe to Active Low and also the Port and Pin (13) correctly.

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.
Re: Triple edge zero finding plate problems
« Reply #2 on: August 01, 2017, 04:22:25 AM »
Yes done that already. thanks

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Re: Triple edge zero finding plate problems
« Reply #3 on: August 01, 2017, 04:37:22 AM »
Hi Ian,

Assuming you have set / configured Pin13 correctly then temporarily connecting it to GND should activate the Digitize LED on the Diagnostics (Alt-7) page. Does it do this ?

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.
Re: Triple edge zero finding plate problems
« Reply #4 on: August 01, 2017, 04:49:38 AM »
No, nothing happens when I ground the pin.

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Re: Triple edge zero finding plate problems
« Reply #5 on: August 01, 2017, 05:37:51 AM »
If you attach your .xml file ( <your profile> .xml from your Mach3 folder) I will check your configuration. Copy it and rename the copy to iparr.xml then use the Additional Options to attach.

Connect a voltmeter between Pin 13 and GND. What is the voltage reading ?
Connect the voltmeter between Pin 13 and +5 Volts. What is the reading ?

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.
Re: Triple edge zero finding plate problems
« Reply #6 on: August 01, 2017, 08:36:09 AM »
Hi thanks for your patience,

Pin 13 to GND = 4.8v

Pin 13 to +5v = 0.25v

Hope this helps, Ive attached what I hope is the profile folder.

Thanks again.
Ian

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Re: Triple edge zero finding plate problems
« Reply #7 on: August 02, 2017, 01:15:09 AM »
Hi Ian,

Unfortunately your .xml file did not attach.

The following pic shows how you should be configuring pin 13 for operation with your touch plate.

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.
Re: Triple edge zero finding plate problems
« Reply #8 on: August 02, 2017, 09:44:34 AM »
Thans for the reply

Yes that is exactly how I have enabled pin 13. I've checked it several times.
How did the voltage readings check out? Could it be a faulty board? I had a previous board with a faulty Estop input.
I've tried to send the file again, but I get an error message. Can I email the file directly to you?

regards
Ian

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Re: Triple edge zero finding plate problems
« Reply #9 on: August 02, 2017, 10:41:58 AM »
Hi Ian,

The voltage readings are correct.

A question I should have perhaps asked before - What make and model of breakout board are you using (a picture may be good) ?

(e-mail me your .xml file, my mail box address is under my avatar)

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.