spindle control

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18 Aug 2010 09:36 #3801 by M4MazakUser
Replied by M4MazakUser on topic Re:spindle control
um, thats fine, but what should spindle-index be connected/referring to?

if i try to hook it to an input pin, it says it cant, as it is an output??
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18 Aug 2010 11:20 #3802 by BigJohnT
Replied by BigJohnT on topic Re:spindle control
spindle-index is the signal

motion.spindle-index-enable I/O bit

For correct operation of spindle synchronized moves, this signal must be hooked to the index-enable pin of the spindle encoder.

encoder.N.index-enable bit i/o (same for hostmot2)

When true, counts and position are reset to zero on the next rising edge of Phase-Z. At the same time, index-enable is reset to zero to indicate that the rising edge has occurred.

both pins are I/O pins and will not give you that error. There must be something else giving you that error.

this is the line from my config for spindle enable.

net spindle-index motion.spindle-index-enable <= hm2_5i20.0.encoder.02.index-enable

read this: www.linuxcnc.org/docview/html//hal_basic_hal.html

post your .hal file (rename it to .txt and attach it)

btw, I use comment marker to find the error lines in my hal files. Comment a suspect line and try and load...

John

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18 Aug 2010 12:40 #3806 by andypugh
Replied by andypugh on topic Re:spindle control
M4MazakUser wrote:

Yes in my thinking, the spindle index should reset the count every revolution therefore making the spindle revs a meaningful number. This would also make the spindle position meaningful.


The spindle index pulse should not reset the spindle revs every revolution, only when requested to do so by motion.spindle-index-enable.

Normally the spindle.revs number counts up (or down) indefinitely. Resetting every rev would make threads of more than one turn impossible..

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19 Aug 2010 00:56 #3815 by cmorley
Replied by cmorley on topic Re:spindle control
If you can confirm the error, I will fix pncconf. I currently don't have anything to test with.

Thanks.
Chris Morley

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19 Aug 2010 02:09 #3816 by cmorley
Replied by cmorley on topic Re:spindle control
Hmm I don't think this is the problem.
the two components are connected, they are just connected on two lines instead of the same line.

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19 Aug 2010 02:19 - 19 Aug 2010 02:22 #3817 by cmorley
Replied by cmorley on topic Re:spindle control
ok I think I got it .

pncconf forgot to connect motion.spindle-revs to encoder.position

add the line:

net spindle-revs => hm2_5i20.0.encoder.02.position
Last edit: 19 Aug 2010 02:22 by cmorley.

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19 Aug 2010 08:54 - 19 Aug 2010 08:56 #3821 by M4MazakUser
Replied by M4MazakUser on topic Re:spindle control
ill try that tomorrow -thanks heaps!

here is my hal file ...

i also have a problem in that neither my handwheel, or joystick work, i feel that there is connection missing that links the selected joint with the axis you select.
# connect jogwheel signals to mesa encoder - shared MPG
net joint-selected-count <= hm2_5i20.0.encoder.03.count
setp hm2_5i20.0.encoder.03.filter true
setp hm2_5i20.0.encoder.03.counter-mode false
# for axis x MPG
setp axis.0.jog-vel-mode 0
net selected-jog-incr => axis.0.jog-scale
net joint-select-a => axis.0.jog-enable
net joint-selected-count => axis.0.jog-counts
# for axis z MPG
setp axis.1.jog-vel-mode 0
net selected-jog-incr => axis.1.jog-scale
net joint-select-b => axis.1.jog-enable
net joint-selected-count => axis.1.jog-counts

i havent really looked in depth at it, just very happy to have ran the machine all day!
the x axis works *handwheel/ joystick, but the selection switch i have wired in -

# --- JOINT-SELECT-A ---
net joint-select-a <= hm2_5i20.0.gpio.035.in_not

# --- JOINT-SELECT-B ---
net joint-select-b <= hm2_5i20.0.gpio.035.in

-links to jog enable, but dosent seem to send anything to the z axis motor -( the velocity registers on the screen, and throws the machine into an a "z axis following error")

and thanks for the time you have spent on my problems!

File Attachment:

File Name: mazak.txt
File Size:17 KB
Attachments:
Last edit: 19 Aug 2010 08:56 by M4MazakUser.

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19 Aug 2010 11:01 #3823 by BigJohnT
Replied by BigJohnT on topic Re:spindle control
I use two different inputs to select my X and Z axis for jogging.

net mpg-x axis.0.jog-enable <= hm2_[HOSTMOT2](BOARD).0.gpio.054.in_not
net mpg-z axis.2.jog-enable <= hm2_[HOSTMOT2](BOARD).0.gpio.052.in_not

You can send the jog counts to all axis at the same time as only the one that is enabled will move.

net mpg-count <= hm2_5i20.0.encoder.03.count
net mpg-count => axis.0.jog-counts
net mpg-count => axis.2.jog-counts

My scale selector switch is set up like this and no input is for the shortest move per pulse... also note that I named my mux4 for clarity.

# MPG Scale
loadrt mux4 names=mpg-scale
addf mpg-scale servo-thread
setp mpg-scale.in0 .000025
setp mpg-scale.in1 .00025
setp mpg-scale.in2 .0025
# set the MPG scale based on the inputs from the selector switch
net pos2 mpg-scale.sel0 <= hm2_[HOSTMOT2](BOARD).0.gpio.037.in_not
net pos3 mpg-scale.sel1 <= hm2_[HOSTMOT2](BOARD).0.gpio.035.in_not

in comparison it seems you have all hooked up... Z is axis.2

John

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20 Aug 2010 04:42 #3826 by cmorley
Replied by cmorley on topic Re:spindle control
please post all your emc file including the pncconf file.

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18 Oct 2010 05:57 - 18 Oct 2010 05:58 #4734 by cmorley
Replied by cmorley on topic Re:spindle control
Good find John! pncconf Is giving the wrong axis number for Z axis.
I see the error in the code.
This will effect lathe configs.
Thanks.
Last edit: 18 Oct 2010 05:58 by cmorley.

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