Reliable data aggregation and tunneling for OPC DA environments
The OPC DA Client Driver is available as part of the OPC Client Drivers Suite:
Max Channels Supported
Max Devices per Channel
Client Interfaces (OPC UA/DA, DDE, SuiteLink, FIX)
OPC DA Versions Supported (1.0/2.0/3.0)
The TOP Server OPC DA Client Driver enables standard, reliable connectivity to local or remote 3rd party OPC DA Servers.
Proven benefits for OPC DA data aggregation and gateway scenarios
Centralizes access to data from multiple OPC servers—local and remote—through one dependable connection point
Use it as an upgrade path to OPC UA while still consuming legacy OPC DA data
Supports remote OPC access patterns for clients that cannot or should not rely on DCOM
Scales up to 128 channels and up to 256 devices per channel
Works with a Media Level Redundancy plug-in for managing redundant OPC DA servers
Helps optimize OPC server performance through grouping and organization strategies
"The Software Toolbox support team was very helpful and provided lots of useful advice and links to help me solve my issue."
Dan Hutton
Automation Engineer
Advanced OPC gateway features for optimal performance
Per-OPC-server monitoring and reconnect policies for each OPC server connection
Remote connectivity patterns for non-DCOM client scenarios enabling secure remote access
Browse OPC DA servers with tag browsing support including filtering and sorting
Automatic tag database creation from the underlying OPC server for quick import and configuration
Supports exception-based updates or polling-based updates with deadband options for update control
Translate acquired OPC DA data into TOP Server supported client interfaces including DDE, SuiteLink, and GE-related interfaces
Protocol
OPC Classic Data Access (OPC DA 1.0, 2.0, 3.0)
Connection Types
TCP/IP via DCOM, Local Machine
Max Channels
128
Max Devices per Channel
256
Update Modes
Exception-based or polling-based with deadband options (percent or absolute)
Data Structures
Two-dimensional array support for complex data
Client Interfaces
OPC UA, OPC DA, DDE, AVEVA SuiteLink, FIX NIO/PDB
Operating System
Windows Server 2012 or later, Windows 10/11
Version Required
TOP Server V6.0 or later (v6.17+ for redundancy-broker scenarios)
Memory
4 GB RAM minimum, 8 GB recommended
Note: Supports underlying OPC DA compatibility for server connections across 1.0 / 2.0 / 3.0, using 2.0 calls when available and falling back to 1.0 when needed. Not all OPC DA 3.0 advanced operations are supported.
Note: OPC DA Client Supported Protocols / Networks
Everything you need to get started, configure, and troubleshoot your driver
Quick-start video for converting OPC DA servers to OPC UA using TOP Server
View →Library of how-to videos covering installation, configuration, and troubleshooting
View →How-to application notes for TOP Server configuration
View →Quick start guide for TOP Server V6 setup
View →Complete driver documentation for OPC DA Client connectivity
Download →Comprehensive troubleshooting guide for common TOP Server issues
View →View the complete TOP Server release history and version information
View →Information on supported operating systems and system requirements
View →