Hi all, I am desperately in need for information on OPC. Things I am interested in are like:1- the difference and advantages over Modbus and DDE? -in cost, -time stamping of Data, -redundancy philosophy? - (anything that could be easy for me to read through, i mean not the whole technicalities....)
2-what is the OPC/DX with respest to the OPC?DA and OPC/ A&E?
Please help, Kazamaza