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23 Sep 2019 15:44 #145976 by Clive S
Replied by Clive S on topic New Plasma build question

That shows something very basic wrong with the feedback
can you post the results of

uname -a

and

halcmd show all *tmax*

( run the last command when LinuxCNC has been running for at least a few minutes )

Thanks


OK:-
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23 Sep 2019 17:04 #145982 by PCW
Replied by PCW on topic New Plasma build question
That looks OK, the plot looks like feedback was lost for large amounts of time (10s of ms)
might be packet loss or some problem in the hal file. Can you do a similar plot
that includes the pin: hm2_7i96.0.packet-error


What PC hardware do you have?
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23 Sep 2019 19:17 #145991 by Clive S
Replied by Clive S on topic New Plasma build question

That looks OK, the plot looks like feedback was lost for large amounts of time (10s of ms)
might be packet loss or some problem in the hal file. Can you do a similar plot
that includes the pin: hm2_7i96.0.packet-error


What PC hardware do you have?

I have a Brix GB-BXBT-1900 BWUP with the wifi taken out. PING time about 0.15

I am struggling with the correct settings for the plots. I can't seem to catch the f-error as I have had to turn down the MAX_ACC~~ to 1000 otherwise it errors on homing. The plots were done by keyboard jogging.

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23 Sep 2019 19:41 - 23 Sep 2019 19:42 #145993 by PCW
Replied by PCW on topic New Plasma build question
Wow that is really weird, looks like there's a real time issue
notice the steps in the ferror (nearly vertical trace) only seem to occur at 25 ms intervals...
Last edit: 23 Sep 2019 19:42 by PCW.

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23 Sep 2019 20:58 #146000 by tommylight
Replied by tommylight on topic New Plasma build question
Not helpful, but i have never seen anything like that, not even on servo systems before tuning !

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23 Sep 2019 21:06 #146001 by tommylight
Replied by tommylight on topic New Plasma build question
Can you please do a processor load graph also while jogging ?
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23 Sep 2019 21:07 #146002 by Todd Zuercher
Replied by Todd Zuercher on topic New Plasma build question
Clive, what is the source of your "encoder" signal again?
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23 Sep 2019 21:52 - 23 Sep 2019 22:04 #146007 by Clive S
Replied by Clive S on topic New Plasma build question

Clive, what is the source of your "encoder" signal again?


Not sure what you mean by this but here are the ini and hal files


File Attachment:

File Name: io_2019-09-23.hal
File Size:1 KB

File Attachment:

File Name: plasma_2019-09-23.hal
File Size:7 KB

File Attachment:

File Name: plasma_2019-09-23.ini
File Size:4 KB


Edit: I will look in halshow and see what it is connected to in the morning.
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23 Sep 2019 21:59 #146009 by Clive S
Replied by Clive S on topic New Plasma build question

Wow that is really weird, looks like there's a real time issue
notice the steps in the ferror (nearly vertical trace) only seem to occur at 25 ms intervals...


I am not 100% sure if I am using halscope correctly.

ie am I using the correct trigger and what timings should I plot at

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23 Sep 2019 22:03 #146010 by Clive S
Replied by Clive S on topic New Plasma build question

Can you please do a processor load graph also while jogging ?


How would I do that please.

I could try a different PC and just move the config over.

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