The microcontroller will use a communications protocol. The messages of this protocol will have to be routed from the scada host to the controller & back. A driver will have to be procured or developed for this purpose. I can help you with this, but this cannot be done via chat. It may take...
AviSprngr -
i know that there are some drivers available that you can use to get data from the machine to the computer and analyse it. Depends what the machines are. and what data you are looking for.
