![]() ![]() This way I will be able to reuse each HMI screen for any PLC that is currently selected. The user changes the selected PLC ID and then HMI starts showing data from the new PLC. What I need is HMI to be able to communicate with one PLC at a time. My data is spread all over the PLCs memory, as it is normal for a big program that uses a lot of data registers for read or write between HMI and PLCs.
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