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The NetDDE Server bridges the gap between Windows-based applications
and process control systems. NetDDE (Network Dynamic Data
Exchange) is a real-time data interchange protocol that is
based on an open standard and a consistent method of accessing
data from plant devices. An extension to Microsoft's DDE (Dynamic
Data Exchange), NetDDE is a protocol to transfer data between
programs across the LAN/WAN.
NetDDE enables users to easily integrate plant data with
any third party NetDDE enabled software, regardless of the
type and source of data. NetDDE does not require a custom
interface or driver in order for an external application to
access a plant's process control device.
NetDDE Server Features:
- Reads current plant information for plant performance
analysis using external NetDDE-enabled applications such
as Microsoft Excel and Microsoft Access
- Writes new point information on the DCS highway using
third-party NetDDE-enabled software
- Transfers 1000 data items each second, providing continuous
automatic update of information without user request
- Maximizes throughput by transferring data to client application
on an exception basis
- Interfaces between different types of DCS systems, enabling
an operator to see all process information
- Maintains a log of all system errors and major operations
in a user-configured location. This log can be used to diagnose
problems and analyze plant performance
- Writes any major program faults to the Microsoft®
Windows® Event Log.
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