aux spindle and feed overrides questions

microsprintbuilder
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04 Nov 2014 05:48 #52739 by microsprintbuilder

aux spindle and feed overrides questions was created by microsprintbuilder

I'm trying to use some encoder switches to adjust feed and spindle overrides. I have a mesa 5i25-7i77 set-up. I using the option 3 and the pins 16,17,18,19 . I get a pulse in hal scope showing they are working but must be missing something in the hal file. I moved the encoder to gmoccapy to the post hal as instructed but still doesn't work.

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PCW
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04 Nov 2014 07:55 #52742 by PCW

Replied by PCW on topic aux spindle and feed overrides questions

If you are using the built-in encoder (7I77 mode 3), you dont need to add a software encoder (encoder comp)

If you are using a software encoder you must make sure that you addf it to the servo thread

For a software encoder you will need to supply field voltage to your switches,
for the built in MPG encoder, 5V signals are sufficient

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microsprintbuilder
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04 Nov 2014 08:19 #52744 by microsprintbuilder

Replied by microsprintbuilder on topic aux spindle and feed overrides questions

i am using the digital inputs not the encoder inputs on the 7i77. I supplied 5 volts to the switches and I can see them working in the hal scope but nothing is happening in the counts. I increased the encoder counts to 8 in the hal. I took some photos and converted them to a pdf and attached them.

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PCW
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04 Nov 2014 08:25 #52746 by PCW

Replied by PCW on topic aux spindle and feed overrides questions

Field I/O pins 16,17,18,19 can be use as 2 sets of MPG encoder inputs, when the 7I77 mode is set to 3
This mode does not require a software encoder or looking at the input bits (and can count much faster)

I would suggest using this mode

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microsprintbuilder
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04 Nov 2014 08:33 #52747 by microsprintbuilder

Replied by microsprintbuilder on topic aux spindle and feed overrides questions

sounds perfect, is there a set of instructions somewhere to show me how.

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PCW
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04 Nov 2014 08:41 - 04 Nov 2014 08:43 #52748 by PCW

Replied by PCW on topic aux spindle and feed overrides questions

If you have mode 3 enabled, take a look at the hal pins, there should be ones that end in enc0 and enc1, these are the mpg encoders

Last edit: 04 Nov 2014 08:43 by PCW.

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microsprintbuilder
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04 Nov 2014 08:47 #52749 by microsprintbuilder

Replied by microsprintbuilder on topic aux spindle and feed overrides questions

Thanks, I'll run over to the shop and check it out.

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microsprintbuilder
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04 Nov 2014 09:47 #52751 by microsprintbuilder

Replied by microsprintbuilder on topic aux spindle and feed overrides questions

I got nothing in hal like that do I need to assign those pins to something first

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microsprintbuilder
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04 Nov 2014 09:56 #52752 by microsprintbuilder

Replied by microsprintbuilder on topic aux spindle and feed overrides questions

Is there another step to changing to mode three other than changing the number to 0=300xxx

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PCW
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04 Nov 2014 10:42 #52753 by PCW

Replied by PCW on topic aux spindle and feed overrides questions

with linuxcnc running, try this:

halcmd show pin *enc0*

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