Wonderware”s DAServer provides connectivity to General Electric (GE) programmablelogic controllers (PLCs), using GE”s Service Request Transfer Protocol(SRTP) to provide real-time, configurable read-and-write access fromWonderware software. The SRTP within the Wonderware DA Server islayered on top of TCP/IP in order to communicate with GE”s Series 90,Versamax, and Pacsystems PLCs. Based on standards-based ArchestrAtechnology, Wonderware”s SuiteLink protocol, OPC technology, and DDE toconnect Wonderware software with third-party products and OPC-compliantdevices and applications.  The server also supports simultaneousconnectivity to multiple client nodes, enabling users to expand theirexisting supervisory HMI, SCADA, and production and performancemanagement applications. The server complies with the OPC 2.05protocol, enabling interoperability with any OPC client application.OPC clients can browse the server”s configured tag database and obtaindevice tags for use in client applications.