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The OpCon.DDL.Communication.CommOpConXML.dllcommunications module "" enables data to be exchanged between PLC and the OpCon DirectDataLink ExecutionEngine Service. Data is transferred in a defined XML format via TCP/IP (Windows Sockets).
Telegrams (events) which do not correspond to the specified schema are rejected, and an error is generated and logged internally. See document OpConXML.pdf.