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I need to create a small HMI/SCADA WPF application that uses WCF -
i have create simple app, suit example of using wpf , wcf creating hmi screens.
i'm not sure wcf supposed in such application, guess there must opc server application connects to. app connect opc server using wcf service , wcf service reside inside application or outside?
is wcf service meant used connection opc server? i'm not yet quite sure process simulate, need simple.
please, ideas welcomed.
thank you
it sounds have wpf application act hmi, containing ui elements. wpf application create client proxy wcf service using address (the host address service running on), binding (probably tcp or http) , contract (an interface) of service.
the wcf service hosted somewhere (the host address) , expose endpoint specifies binding , contract. wpf app's client proxy communicate with. methods implemented in service's contract instantiate opc classes , write or read opc items needed.
in simplest form, have 1 solution 2 projects: 1 wpf application (with client proxy) , 1 wcf service (with opc implementations).
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