Halscope Basics

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01 May 2014 16:45 #46507 by greeder88
Halscope Basics was created by greeder88
I'm not getting anywhere. I tried to get Halscope to connect to something and it acts dead.
Obviously I am doing something wrong.
The manual has 11 pages of command prompt entries to get into Halscope.
My AXIS has one button to get into Halscope but this button seems to get me a fake halscope connected to nothing.
My fake halscope has all the right looks but the lines are dead.

So what am I doing wrong?
Thanks in advance.

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01 May 2014 18:26 #46508 by BigJohnT
Replied by BigJohnT on topic Halscope Basics
Did you click on a channel and add a source for the signal?

You also have to pick one channel as the trigger.

Unfortunately I have not completed the Halscope tutorial but my servo tuning tutorial has screen shots that should give enough hints to set up Halscope.

gnipsel.com/linuxcnc/tuning/index.html

JT

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01 May 2014 19:12 #46511 by greeder88
Replied by greeder88 on topic Halscope Basics
I tried just about every combination I could. Used the Axis 0 joint velocity command as my source.
I copied your screen shots except using axis 0
I hit force
I jogged my axis, homed my axis,
Tried every combination possible.
Probably tried 10 or maybe 15 attempts.
Still no life on the screen.

Got pretty good with manually changing the numbers in the INI file.

I found the tutorial was nice and brief. Unfortunately for me 10% too brief. For example tune P.
No P was ever shown on the screen shots.
They were all of Axis 1 Ferror
My suggestion is to assume Homer Simpson is who you are teaching.
Homer and I are not that far apart with complex electronics.
You do a fantastic job though. Without your examples I would not be this far along.

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01 May 2014 19:42 - 01 May 2014 19:44 #46512 by BigJohnT
Replied by BigJohnT on topic Halscope Basics
Did you adjust the trigger point using the slider on the right to position the trigger line just above the velocity line?

I'm out of time for this week so someone else will have to step in and help from here.

JT
Last edit: 01 May 2014 19:44 by BigJohnT.

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01 May 2014 19:52 #46513 by greeder88
Replied by greeder88 on topic Halscope Basics
I will try again today paying attention to the slider .
Thanks

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02 May 2014 17:45 #46537 by greeder88
Replied by greeder88 on topic Halscope Basics
Good news I finally got life to show up on the screen.
Pretty sure it was my Hal File. I had this:
sserial_port_0=300xxx

I changed to this:
sserial_port_0=002xxx

and I got a pulse on the Ferror.

The Halscope is very tricky and touchy so not positive the above was what did the trick but I have life now.
LIfe is good.

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02 May 2014 20:56 #46538 by PCW
Replied by PCW on topic Halscope Basics
The sserial mode setting is not related to halscope setup
(It may change the set of available hal pins however)

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03 May 2014 00:33 #46541 by greeder88
Replied by greeder88 on topic Halscope Basics
I am doing good!
Everything is ready to tune.
However...
Halscope is a mystery. I went through the manual as much as my attention span allowed but don't know the basic concept.
I followed John's tutorial but it is too brief for me to figure out.
I can jog away and get nice graphs that I can use my mouse to move around but what is happening? Nothing is sounding different.
How do you change the actual numbers in the .INI file with the Halscope?
Thank You Very Much in advance.

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03 May 2014 01:23 #46542 by PCW
Replied by PCW on topic Halscope Basics
halscope cannot change anything, it is just a tool for
visualization of signals (like an oscilloscope)

For setting INI tuning values, you can use the calibrate menu in axis
The following user(s) said Thank You: greeder88

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03 May 2014 02:11 #46545 by greeder88
Replied by greeder88 on topic Halscope Basics
Now I am on track. Thanks.

I have one issue. My Z axis holds however when I jog the following error goes wild and shuts down.
Other two axis are fine. The Z axis had to have the tach reversed when setting up the amps which is strange since all motors and amps are the same.
I switched motors then amps with the Z axis and no change.
I reversed the encoder wires this way: A+A- changed to A-A+ same with B and Z. This didn't do anything.
The other strange thing about Z is when setting "P" it could take infinity without shaking. X and Y are at 20.

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