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For DDE clients, LinkMaster will automatically start NETDDE services and register all of the required DDE shares, allowing remote DDE clients access to device data. In terms of OPC connections, LinkMaster will properly configure your DCOM settings to allow remote OPC clients to access and browse LinkMaster. LinkMaster has been designed to allow both of these methods of remote server access. NETDDE allows a remote DDE client application to use the machine name of a remote DDE server when specifying a DDE link. All of the DDE formats supported by LinkMaster can also be accessed remotely using what is known as NETDDE. DDE is not without its own means of allowing remote access. Represented Kepware in various industrial initiatives and technical. DCOM allows you to use a single OPC server to provide data to client applications running both locally and on remote machines. Responsible for the evolution of KEPServerEX and created Kepwares first-generation LinkMaster and RedundancyMaster products. When the "Primary" node comes back up again, the "Secondary" node demotes itself and the "Primary" node performs the data transfer once again.īased on Microsoft's COM technology, OPC servers can share data with remote client applications using DCOM (Distributed COM). When the "Primary" node fails, the "Secondary" node promotes itself and takes over the role of the primary. This feature allows a pair of LinkMaster machines to operate in redundant pairs where one LinkMaster machine operates as the "Primary" node and the other as the "Secondary" node.