J
Jiri Baum
On Mon, Jan 24, 2000 at 02:42:23PM +0000, Dave West wrote:
> On Mon, 24 Jan 2000, Jiri Baum wrote:
...
> > As you can see, once the linuxPLC exists, you have a lot of code that
> > can be re-used for a linuxHMI, most of it without any change.
...
> I think I see your point here.
> I thought you were refering to the PLC controlling the plant and that the
> HMI would slow it right down. But what you actually mean is we take great
> chuncks of the PLC code and use it to write a seperate HMI. This seperate
> HMI will process I/O at a slower rate. Yes?
In a plant-control situation, yes.
However, it should be written so that it can run on the same computer, sharing the I/O drivers etc. Basically, make it interface to the same
shared memory manager.
One advantage of linuxPLC over commercial systems should be that the engineer can take it home and use it to run his model railway.
Jiri
--
Jiri Baum <[email protected]>
On the Internet, nobody knows if you are a @{[@{[open(0),<0>]}-1]}-line
perl script...
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> On Mon, 24 Jan 2000, Jiri Baum wrote:
...
> > As you can see, once the linuxPLC exists, you have a lot of code that
> > can be re-used for a linuxHMI, most of it without any change.
...
> I think I see your point here.
> I thought you were refering to the PLC controlling the plant and that the
> HMI would slow it right down. But what you actually mean is we take great
> chuncks of the PLC code and use it to write a seperate HMI. This seperate
> HMI will process I/O at a slower rate. Yes?
In a plant-control situation, yes.
However, it should be written so that it can run on the same computer, sharing the I/O drivers etc. Basically, make it interface to the same
shared memory manager.
One advantage of linuxPLC over commercial systems should be that the engineer can take it home and use it to run his model railway.
Jiri
--
Jiri Baum <[email protected]>
On the Internet, nobody knows if you are a @{[@{[open(0),<0>]}-1]}-line
perl script...
_______________________________________________
LinuxPLC mailing list
[email protected]
http://linuxplc.org/mailman/listinfo/linuxplc