Why a license?
I have no idea. It sounds like they want you to ask permission.
However I am quite sure the software will work without permission being granted.
So what's the point?
And if you obtained a license, what exactly do you do with it?
Print it out and paste it on the wall? Put in in your wallet next to your
fishing and driving license?
Was "Ethernet" ever licensed? I was around when DEC first started selling Ethernet
systems. Back then there was a lot of mystery (and cost) around setting up an Ethernet system. I
remember a tap kit for semi-rigid Ethernet cable costing thousands of dollars. I still have some
of that "cable" around here someplace.
On 1/17/2018 11:10 AM, Nicklas Karlsson wrote:
On Wed, 17 Jan 2018 09:27:25 -0500
Dave Cole <linuxcncro...@gmail.com> wrote:
The text below is at the end of the SOEM page from the link below.
https://openethercatsociety.github.io/doc/soem/index.html
So how does this work?? The SOEM software itself is GPL, but if you
implement an Ethercat master, you need to get a license ??
Why a license?
I have nothing about sharing my work but copyright issues i something different.
Then in european union I read something about interoperability so you are
always allowed to make your own device to talk to other device.
That's an interesting approach.
If the SOEM code is all GPL, then how could adding GPL code to GPL code
result in something other than GPL code ?
From a practical standpoint, I think we need to figure out how to get
networked drives connected to LinuxCNC if we want LinuxCNC to live on.
At some point analog servo drive interfaces will become like 5 1/4"
floppy drives... They were once common.
Yes.
Michael Büsch already implemented a profibus master. I have it running against
an IO module and millions of these kind of devices have been sold. I think he
implemented on Rasberry and I had some timing issue before running on ordinary
computer but have not looked further because I have been busy with something
really good for servos and looking for a new woman.
Bandwidth required to replace an analog signal may be surprisingly high and for
a control loop even though there are plenty of bandwidth it need to split in
many small messages. Ethercat solve this problem in a similar way as cascade
coupled shift registers.
Nicklas Karlsson
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