DDE Client Driver OPC Server - KEPServerEX OPC Servers

Overview

Kepware's 32 bit DDE Client driver works in conjunction with our OPC Server KEPServerEX, to provide data exchange between OPC Clients and legacy DDE Server applications. If you have an OPC client application that needs to access an existing DDE server, this driver is the solution. Data integrity is ensured with our extensive error handling.

The DDE Client Driver OPC Server provides data exchange between OPC Clients and legacy DDE Server applications. If you have an OPC client application that needs to access an existing DDE server, this driver is the solution. .

Devices

Supported Devices

Device	Note
Can be used with any DDE server that supports standard Microsoft DDE.	See Specific Features for more information.

Features

Specific Driver Features

Specific

The DDE Client Driver is capable of communicating with any server that supports the standard "CF TEXT" DDE data format.
Clients may reside on remote machines and communicate with this driver via OPC or NetDDE. However, the current version of this driver cannot access data from DDE servers running on remote machines.
The driver will automatically reconnect when DDE servers are brought back on-line.
A "ReinitializeDDE" tag is provided to aid in the resolution of DDE communication failures.
This driver uses "hot links", where a DDE server passes data to the driver only when the data value has changed. This provides a significant performance advantage over the alternative request/response loop approach since each DDE transaction is relatively time consuming.
Addressing uses familiar "ApplicationName| TopicName ! ItemName" method for DDE server data.
All major data types are supported.

General

Multi-threaded design for optimum performance.
Application Connectivity
Device Connectivity for concurrent devices.
Supports running as a Windows NT Service.
Supports Direct Scaling of device data.
Full Time On-line operation.
CSV file import and exportof server tags.
User Management
Tag Management
Network Interface Selection
Channel Diagnostics provide real-time data.
OPC Diagnostics to view OPC events.
Modem support for all serial drivers.
OPC Quick Client application.
Visual Basic OPC Client with VB Examples.

OPC/DDE

OPC Data Access Version 1.0a
OPC Data Access Version 2.05a
OPC Data Access Version 3.0

Learn more about OPC - Open Process Control

HMI/Client

KEPServerEX has been enhanced to provide the widest range of connectivity of any server product available. KEPServerEX supports the following client server technologies:

FastDDE for Wonderware
SuiteLink for Wonderware
iFIX PDB for Intellution
DDE Format CF_Text
DDE Format AdvancedDDE

To see a list of HMI's and Clients that we support go to our HMI / Client Support page.

Required

Required Software and Hardware

Supported Operating Systems

Windows NT
Windows 2000
Windows Server 2003
Windows XP

PC Hardware

Minimum

400 Mhz Pentium CPU
128 Megs of RAM
100 Megs of Free Hard Drive Space

Recommended

600 Mhz Pentium CPU
512 Megs of RAM
100 Megs of Free Hard Drive Space

Hardware Requirements

For Device and Hardware Requirements see the Devices tab.
Hardware Accessories

Protocol

Communication Protocol

OPC
DDE

VB

Visual Basic

KEPServerEX Visual Basic OPC Client
Complex and Simple Visual Basic OPC Client Examples
Using Modems and Visual Basic with KEPServerEX.
Download the Modem and VB Example with Source Code
Knowledge Base

Help

Help/Links