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Pncconfs 10000 limit is about 1G. I would consider this super fast for routers
with more typical values in the .5 G range.  49800 mm/sec^2 is about 5G
which is crazy for almost anything except some 3D printers and perhaps laser
cutters (with linear motors)

Higher accelerations will excite vibrations and cause position errors due to
machine flex (especially when you are accelerating something heavy like a spindle)

Lower accelerations will cause slowing on sharp curves. One way to look at this is to
calculate the minimum radius possible before the machine needs to slow on corners.
This is V^2/A so at a acceleration of 10000 mm/s^2 and a max cutting velocity of say
100 mm/sec, you can cut a 1mm radius without slowing down.

Another way to get a feel for this is to calculate the time needed to reach full velocity.
at 10000 mm/s^2 and 100 mm/s full speed, its only 10 ms from zero velocity to full velocity.
That's what I call starting with a bang!


 

LINUXCNC_HOME is not set. I thought that I saw in the "linuxcnc" script where it was set upon execution when starting?

This may be why I had so many problems in the past. I prefer to run RIP but, I may have accidentally/inadvertently installed the uspace version
and perhaps not knowing the difference. I recently removed the uspace version however not totally sure that is what caused DESIGNER to
fail.

Additionally, what's a mystery to me is the use of paths in the INI file. Should be using FULL paths or ABSOLUTE paths or other?.......

Here's what is set:
andy@file0x:~$ env
SHELL=/bin/bash
EMC2VERSION=2.10.0~pre0
GLADE_CATALOG_SEARCH_PATH=/home/andy/linuxcnc-dev/lib/python/gladevcp
GLADE_ICON_THEME_PATH=/home/andy/linuxcnc-dev/share/glade/pixmaps:
PWD=/home/andy
LOGNAME=andy
XDG_SESSION_TYPE=tty
MANPATH=/home/andy/linuxcnc-dev/docs/man:/usr/local/man:/usr/local/share/man:/usr/share/man
TCLLIBPATH=/home/andy/linuxcnc-dev/tcl
HOME=/home/andy
LANG=en_US.UTF-8
LINUXCNCVERSION=2.10.0~pre0
XDG_SESSION_CLASS=user
LINUXCNC_EMCSH=/usr/bin/wish8.6
PYTHONPATH=/home/andy/linuxcnc-dev/lib/python
TERM=xterm
USER=andy
SHLVL=1
XDG_SESSION_ID=9
LD_LIBRARY_PATH=/home/andy/linuxcnc-dev/lib
XDG_RUNTIME_DIR=/run/user/1000
LINUXCNC_NCFILES_DIR=/home/andy/linuxcnc-dev/nc_files
EMC2_HOME=/home/andy/linuxcnc-dev
PATH=/home/andy/.local/bin:/home/andy/bin:/home/andy/linuxcnc-dev/bin:/home/andy/linuxcnc-dev/scripts:/home/andy/linuxcnc-dev/tcl:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games:/home/andy/.local/bin:/home/andy/.local/bin
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
SSH_TTY=/dev/pts/2
_=/usr/bin/env
 

Both the 7I96S and the THCAD(if damaged) are likely repairable with a
single chip/card

I don't really get your point of view.
The ethical thing would be to share the GPL code.

I don't have the time nor money to sue Tormach to get it. IMO what they are doing is simply malicious (non) compliance.

Yes it is... at the end is homing subroutine ... have a look carrefully how it works in the whole scale

I am using it in the CSP for less then two years and it is rock solid... but not run CSP over them because it is incremental(60C1) and not SI(607A) units because of Kollmorgen stuff... 

but I defenetly recomend you to do all config and startup SDOs via the TwinCAT3(I can help u)... Try it over that because it is easy and it will generate you a configuration itself... with SDO config too

I will have to create a python script which will did it automaticly but time lack is present..

or reply me over my last mails

regarrds

tommylight wrote:

Unless that is a very small 3D printer, 49800 mm/sec^2 is way, way, way to high.
 

Okay. I am looking for known good values for Clearpath SDSK servos on an Avid router, specifically a Benchtop Pro. There is no way that I am the first person to set up this specific configuration.

rodw wrote:

You can edit the ini file directly to set the accelleration.
Read the docs on ini file configuration
But I think you will find more than 3000-5000 will shake your machine apart,
 

This was a general question about the settings for very common servos, not specifically about maximum acceleration. That was simply to point out that I can't even enter a calculated value.

I am looking for examples of known good settings for a Clearpath SDSK servo, for all of the entries in pncconf.

I will double check for shorts on P1 and the shield terminate at 7i96s.

I will update

Hi rodw. Thanks for the pointer. You must be referring to this thread below. I can't believe I missed it.

forum.linuxcnc.org/38-general-linuxcnc-q...6-12?start=10#315437

I'm going to try that patch and report back.

Ok , thanks.

All HAL float pins are 64-bit doubles.

Are you needing to deal with Single precision floats from something like Modbus or EtherCAT.

In the general case there is no way to do this, as there is no way to know what was intended. But if there is an assumption that the value is approximately continuous then you can make an inference.

That said, it's hard to think of any engineering quantity inside a CNC controller that could overflow. (encoder and stepgen integer counts potentially can)

Also, I don't think that your initial assertion is correct:

stackoverflow.com/questions/61918158/how...t-max-1-defined-in-c