http://www.anaheimautomation.com/products/servo/servo-systems.php?tID=1107&pt=t&cID=527
Not cheap, but if you are putting them on a production machine... that
has to run everyday and makes $$, then these are really inexpensive.
I think these are about half of what Automation Direct is selling
non-networked drives.
Dave
On 10/27/2017 2:23 PM, Gene Heskett wrote:
On Friday 27 October 2017 13:14:30 Dave Cole wrote:
Check out this video - this is 2013 and he is using Ethercat with
LinuxCNC. Unfortunately I can't understand him. :-(
https://www.youtube.com/watch?v=yR9rCFavFjU
Dave
That looks like well over a kilobuck just to wave some masking tape
around. Except for spindle's, and Z on the g0704, I only have about $90
to $125 in any other axis beyond the bobs. And they've carved up some
pretty nice stuff.
On 10/27/2017 6:40 AM, Nicklas Karlsson wrote:
I make my own hardware, it's only for fun and I do not intend to
earn money on it. It's however useful to know how it works during
normal working hours.
2017-10-27 11:07 GMT+02:00 theman whosoldtheworld
<[email protected]>:
I use the suggestion and indication from linuxcnc forum:
https://forum.linuxcnc.org/24-hal-components/22346-ethercat-hal-dri
ver
about SOEM, The basic implement is not realtime .... so is ok for
user command, not so for drive command. Any how my decision is not
utilize ethernet bus for drive position/velocity/torque command.
Mesa analogue signal and feedback encoder on mesa card are too easy
and precise signals to use to go for alternative methods that
usually do not give such good performances. Keep in mind that
realtime on ethercat is not a universal value ... commercially
there are devices that go under 1 ms but others that arrive up to
10-20ms .... for example kunbus has made devices on pi3 with
ethercat and more, but with a realtime of 5ms.
I have made the opinion that bus-rt on ethernet are very nice, but
they will really be useful only in some have. in the meantime it is
best to play on to be ready and wait. If you would use it for data
comm between some device or for connect some device without problem
of 5-10ms response time all work fine. I could not recommend any
ethercat for professional use as a result of my experiences. But
I'm sure many others have taken advantage of it.
Last but no least, there is also the security issue. Here in Europe
ethernet-ip and secure signals do not agree much for example. In
addition, many drive manufacturers do not have safety over ethercat
even if they have the bus.
regards
bkt
2017-10-26 18:19 GMT+02:00 Nicklas Karlsson
<[email protected]>
On Thu, 26 Oct 2017 13:36:26 +0200
theman whosoldtheworld <[email protected]> wrote:
I'm working with it now using linuxcnc implementation ... and in
past
with
backoff device. ...
I just started to look a day or two ago, which Ethercat
implementation?
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most engaging tech sites, Slashdot.org! http://sdm.link/slashdot
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Cheers, Gene Heskett
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