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Anyone working on control/HMI in .NET?? (Off Topic)

P: n/a
Hello all;

First, I apologize for being off topic.

I'm researching a control project, and I'm getting lost in the

Want I want to do is create my Human-Machine interface (HMI) in .NET
winforms, talk to PLCs and custom hardware over "Industrial Ethernet" (
or "Ethernet/IP"), which in turn talk to devices/sensors over some
other bus/protocol combo. Also want the ability to remotely monitor
the system over the internet.

I'm not sure how to go about programming for Industrial Ethernet in
..NET. It seems to have it's own protocol on top of TCP/UDP (called
"CIP"). This spec is open, but you have to pay for it, so I'm hoping
to get a general understanding before I spend the money. I've also
come across "OLE for Process Control" (OPC), which looks promising, but
still raises a ton of questions (it's another open spec you have to pay
for). It seems that my HMI would be an OPC-client, and I'd still have
to create an OPC-Server to facilitate communications with the hardware
devices. Wouldn't this still result in coding for Industrial

If anyone out there is doing this kind of work, I'd love to be able to
bounce a few specific questions off you. Please reply here or feel
free to email me directly.



May 17 '06 #1
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