EMC: 03seb 07v2.4_branch * rb87503753dc0 10/configs/ (9 files in 3 dirs): turn off some stray execute bits on config files
doesnt get installed, but tkemc.tcl and mini.tcl both reference it
I don't think it's used anymore - it was the tcl shell with emc commands added
I think it's been replaced by some shared library loading scheme
those tcl scripts prefer EMC2_EMCSH, which resolves to wish now
tkemc and mini get special treatment in the emc script, because they're installed in a twice-non-standard place
anyone know if there's a reason they're not in the standard tcl bin dir, or at least in emc2's tcl bin dir?
scripts/emc.in:656 # tkemc and mini are in the tcl directory, not the bin directory
I'm sure there's no reason except historical
it's funny how software accumulates cruft
in the CVS days it wasn't possible to move them without losing history
[09:30:59] <alex_joni> http://blog.jvroom.com/2010/02/27/its-gotta-be-git/
EMC: 03jepler 07master * r733af6086347 10/ (docs/man/man9/stepgen.9 src/hal/components/stepgen.c): Allow the user to specify a stepping waveform
alex_joni: ^^^ svn does merge tracking now (since 1.5 i think)
"Well, finally SVN branches will stop being useless for me. Now if SVN only supported disconnected operations..." </some commenter>
not as we know it, jim
seb_kuzminsky: I haven't dug through those manuals yet...
what!? i sent you that email like a whole night ago! get on the ball man
hitachi also has an inexpensive vector drive vfd that looks yummy, but is probably overkill for a bp in a garage
[16:05:47] <seb_kuzminsky> http://www.driveswarehouse.com/Drives/AC+Drives/Sensorless+Vector+VFD/SJ200-022NFU2.html
with that motor with integrated cooling fan, you really only want to run it at 50-60 Hz anyway I bet. V/F is perfectly fine.
now if you'd lose the varispeed and fit a new motor with a large speed range...
let me get the machine up and running first, then let's talk about breaking it again ;-)
huh, i didnt know about "git stash", seems like "bzr shelve" which i've used a couple of times
they do look roughly equivalent
they both have only two outputs (that you'd probably want to use for fault and at-speed)
use the relay for fault and wire it right into the estop chain, at-speed goes to emc
the AD one has modbus and we even have a hal component to drive it. If you are short on IO that might be an important consideration.
they both do dynamic braking which you might want, considering you'll have no brake
hmmm does the hitachi require an add-on board for dynamic braking?
it says "Dynamic breaking [sic] umit [sic] (BRD)" on the (jpeg) connection diagram
i'm not sure... the x200 manual talks about braking a bunch, but it also talks about an add-on module for braking
i think maybe it has a small (slow) internal braking resistor, and attachment points for a bigger better brake? i'm really not sure
I think all vfds will regenerate onto the dc bus a bit to brake, but it's easy to overvoltage the bus, which will fault the vfd
modbus or 0-10V are alternative ways of specifying the VFD speed from emc, right?
and all the digital IO can be over modbus too
which I guess are just fwd, rev, at speed
I'd still use the relay for fault->estop no matter what (but that doesn't cost you any mesa IO)
about regen braking & faulting, you work around that by configuring the vfd to brake slower, right?
also, the AD drive has a "brake as fast as you can without faulting" setting
i still have 1 totally unused connector on the 5i20, plus a bunch of unused pins on the connector we're using for gpio
plus 1 servo free on the servo connector
one of the selling points of the $340 Hitachi SJ200 over the $255 X200 is that the SJ has better braking...
I bet that's what makes it cheaper than the AD then
the x200 has modbus too
cool, didn't see that. you could probably modify the gs2 hal component for it then.
luls, from gs2_vfd.c: Copyright (C) 2007, 2008 Stephen Wille Padnos, Thoth Systems, Inc.
ok i'll just buy the gs2, since the hal driver's already written
* seb_kuzminsky clicks the Order button
well if you don't care about using modbus, it matters not a bit
bummer, it's $4 below the $300 threshold for free shipping
you can get spare cables for the keypad...
there must be some little thing you can find.
lol the keypad cable is $40
hm hold on, they're offering me an emi input filter for it, i think the x200 has that built in
ah no, not on the -022NFU model
ok the gs2 is on its way :-)
baby steps closer :-)