Nothing wrong with asynchronous processing in control of machinery, as long as
there are checks built in to ensure that events that must happen in a specific
order cannot be executed out of order due to things like race conditions or
operators inputting parameters and hitting the go button too
On 4/17/24 13:02, Todd Zuercher via Emc-users wrote:
Sorry to hijack the thread, but I've had to live with this on a machine that
I'm using cascaded double PID loops on. I have the velocity loop PIDs running
in a fast floating point base thread to help with the tuning of some
cantankerous
On Wed, 17 Apr 2024, Todd Zuercher wrote:
Date: Wed, 17 Apr 2024 18:14:10 +
From: Todd Zuercher
To: Peter Wallace ,
Todd Zuercher via Emc-users
Subject: RE: [Emc-users] Home to index triggers following error
The machine is currently running Linuxcnc 2.7, but the Mesa cards
Henry Street
Dalton, Ohio 44618
Phone: (330)828-2105ext. 2031
-Original Message-
From: Peter Wallace
Sent: Wednesday, April 17, 2024 1:09 PM
To: Todd Zuercher via Emc-users
Cc: Todd Zuercher
Subject: Re: [Emc-users] Home to index triggers following error
[EXTERNAL EMAIL] Be sure
On Wed, 17 Apr 2024, Todd Zuercher via Emc-users wrote:
Date: Wed, 17 Apr 2024 17:00:31 +
From: Todd Zuercher via Emc-users
To: "Enhanced Machine Controller (EMC)"
Cc: Todd Zuercher
Subject: Re: [Emc-users] Home to index triggers following error
Sorry to hijack the thread, bu
)828-2105ext. 2031
-Original Message-
From: andy pugh
Sent: Wednesday, April 17, 2024 8:47 AM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Home to index triggers following error
[EXTERNAL EMAIL] Be sure links are safe.
On Wed, 17 Apr 2024 at 12:45, Tomaz T. wrote:
now
On 4/17/24 07:40, Tomaz T. wrote:
There is an arbitrarily large position jump when the index
pulse is detected. The position counter is set from
whatever has accumulated during the home move to zero. My
PPMC driver detects index_enable going from 1 to 0 and
suppresses any velocity on the next
On Wed, 17 Apr 2024 at 12:45, Tomaz T. wrote:
now it doesn't trigger following error any more (homing completes
> successfully), interesting thing is, that on first attempt of homing after
> fresh starting LinuxCNC I see quite large spike on f-error when hitting
> index pulse, this large spike
>There is an arbitrarily large position jump when the index
>pulse is detected. The position counter is set from
>whatever has accumulated during the home move to zero. My
>PPMC driver detects index_enable going from 1 to 0 and
>suppresses any velocity on the next servo cycle. It still
On Tue, 16 Apr 2024 at 11:10, Tomaz T. wrote:
>
> linksp Bindex <= ppmc.0.encoder.04.index-enable
> linksp Bindex => axis.4.index-enable
>
You may need linksp (or net) Bindex=> pid.B.index-enable.
https://linuxcnc.org/docs/stable/html/man/man9/pid.9.html#PINS
--
atp
"A motorcycle is a
> Is your PID also connected to index-enable (so that it can ignore the
> step-change in inputs)
Now it is done like this:
linksp Bindex <= ppmc.0.encoder.04.index-enable
linksp Bindex => axis.4.index-enable
___
Emc-users mailing list
On Tue, 16 Apr 2024 at 10:27, Tomaz T. wrote:
> What could be reason that home to index triggers following error
Is your PID also connected to index-enable (so that it can ignore the
step-change in inputs)
--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is designed
for
What could be reason that home to index triggers following error (rotary axis),
as it is shown in HAL scope plot:
https://i.ibb.co/FgN61cd/HOME-TO-INDEX-ERROR-1.jpg
[https://i.ibb.co/FgN61cd/HOME-TO-INDEX-ERROR-1.jpg]
INI:
HOME_OFFSET= 0
HOME_SEARCH_VEL= 0
HOME_LATCH_VEL = 2
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