There are multiple ways to exchange data with WebAccess in real-time:
· Data Transfer will read data from one PLC or Controller and write it to another. This allows data exchange between PLCs and Controllers using different communications protocols.
· DDE will exchange data with most Microsoft Office applications (EXCEL, WORD, ACCESS) and many 3rd Party software packages. WebAccess can be both a DDE Server and a DDE Client. These applications can read and write data to the WebAccess SCADA nodes.
· OPC will exchange data with 3rd Party Software / OPC Servers. WebAccess is an OPC Client. Many Process Control and Building Automation vendors provide an OPC Server interface to their automation systems.
· User Programs & API interface allows Visual C and Visual Basic programs to read and write data to WebAccess SCADA node.