>
> Question about MODBUS: I haven't looked at the CL modbus code, but
> would it make sense to put the modbus stuff into a separate driver (at
> least for master mode, where CL is getting info from slaves), and
> connect it via HAL?
Yes and no :)
having a PLC that communicates via MODBUS is not a stretch by any means.
I would think that most people that want to get info from a MODBUS slave
would also want to condition the info in ladder- that makes this way, more
direct.
CL has a nice (familar?) GUI to set up and monitor MODBUS.
I would also think that any one who is going to use a slave device probably
already uses CL.
The biggest reason of all was because the code was already there-it was deleted
in EMC's CL version 7.100- I have tried to add more features and make it more
flexible to use.
If you don't want ladder then yes a separate component would be great.
But that means for the used-to-windows crowd you need to make a GUI
and could possible have hundreds of HAL pins.
I see CL as a general way to communicate to MODBUS slaves.
The other MODBUS component just check in by Seb (right?)
is a more specific, thought now it is easier to make different
components.
I guess I could pull the routines out and cobble together a stand
alone program but I think I would rather let people try CL
find out what works what doesn't then either improve CL
or make a completely new program using different MODBUS
routines.
Just my opinion.
Chris Morley
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