I am guessing that the data transfer between the PLCs is with Send/Receive blocks.
Sending data with send/receive requires that you configure exactly what data is to be transferred. You cant access just any data in the partner PLC.
So the same goes for the SCADA if it is connected to the S7 PLCs and not directly to the S5 PLCs.
edit: So to answer your question post #28, then you would have to make some program change in both the S5 and the S7 PLCs.
Sending data with send/receive requires that you configure exactly what data is to be transferred. You cant access just any data in the partner PLC.
So the same goes for the SCADA if it is connected to the S7 PLCs and not directly to the S5 PLCs.
edit: So to answer your question post #28, then you would have to make some program change in both the S5 and the S7 PLCs.
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