Simatic Net Pc Software V18

A factory has 50 PLCs from different generations (S7-300, S7-1200, S7-1500). Instead of connecting each PLC directly to the MES database (which is inefficient), a single Industrial PC running SIMATIC NET V18 acts as an OPC UA aggregator. The MES queries one OPC UA server, which internally translates requests to all 50 PLCs.