Re: EMC/STG II homing problem

["Les Watts" <leswatts-at-rabun.net>]

Hi Kurtis

I have BDI 2.11 which does not seem to have the source and
header files for newstgmod.o on it. I searched but did not find it. I am
kind of stuck until I get them. I may look in source forge tonight.

I think Paul is working on this for the next release to come very soon. His
last word on compiling was as follows:

"The script at linuxcnc.org is just for the 2.04 version. Basically, it
rebuilds the kernel and rtlinux headers followed by a full compile of the
EMC
sources. I rebuilt the kernel packages correctly for subsequent releases, so
all that needs to be done now is a simple two step process - (As root)

cd /usr/local
./compile
"

Today I spent most of the day mapping ballscrew errors.
I peviously did not have an error correction table as EMC
has. I also mapped the differential error between the twin
x- axis screws. I have a rotating nut/corrector cam on the slave ballscrew.
They are driven by a jackshaft and low backlash spiral bevel gear
transmissions. Mapping is very
slow and painstaking- one really has to monitor temperatures
very closely.

Well for a little while I have to home by driving the axes
into a hard stop with an .ini file with reduced p gain (or
manually) , turning EMC off, and restarting so it wakes
up with EMC zeroing out on that position. It's not fun.
Makes me want to not turn the machine off.

Hey- I wonder what would happen if I hooked up the encoder
battery backup supplied on the STG? (I would also have to battery back up
encoder power as well)

Les

Leslie Watts
L M Watts Furniture
Tiger, Georgia USA
http://www.rabun.net/~leswatts/wattsfurniturewp.html
----- Original Message -----
From: "Kurtis Martineau" <klmartineau-at-shaw.ca>
To: "Multiple recipients of list" <emc-at-nist.gov>
Sent: Monday, March 11, 2002 6:24 PM
Subject: RE: EMC/STG II homing problem


>
> Les,
> Where you successful in recompiling emc with the newstgmod.o installed?
I'm
> not sure which script to use to recompile the BDI212.  Using the BDI209 I
> had to ' make clean all PLAT=rtlinux_3_0 ' and ' make clean all
> PLAT=linux_2_2_18 '  in the /rcslib/src directory first, and then the same
> in the /emc/src directory.  Do you know of a simplier way?
>
> Kurtis