Reliable memory mapping for use as device database
This driver is only available as part of the following TOP Server driver suite:
Max Channels Supported
Max Devices per Channel
Configurable Persistence Rate
Client Interfaces (OPC UA/DA, SuiteLink, DDE)
The Memory Based Driver works in conjunction with TOP Server® to provide an exchange of device data between OPC UA, OPC DA, SuiteLink and DDE clients by acting as a device database or memory map container on the PC.
This driver enables you to retain tag values between server runs. When the driver's Item Persistence is activated, all D register addresses and string values will be saved when the OPC server shuts down. The values are restored the next time you open the OPC server project.
Proven benefits that help you deploy faster and operate more reliably
Acts as a device database or memory map container on the PC, sharing data across OPC UA, OPC DA, SuiteLink, and DDE clients
Bridges data between OPC UA, OPC DA, SuiteLink, and DDE clients without requiring a physical device
Supports a wide range of data types, including string arrays, for versatile tag configuration
Retains tag values between server runs, or at a user-configurable persistence rate, so critical data isn't lost
Automatically restores saved D register addresses and string values the next time you open your OPC server project
Multi-threaded architecture supports high scalability for growing tag counts and applications
Secure user management ensures only authorized users can view or modify data
Built-in redundancy, auto-demotion, and extensive diagnostics keep your virtual data environment dependable
"Outstanding reliability and performance. This driver has been running flawlessly in our production environment for over a year."
John Anderson
Automation Engineer, Manufacturing Solutions Inc.
Everything you need for reliable industrial connectivity
Supports up to 100 channels for scalable memory-based data organization
Supports up to 999 devices per channel, with practical limits depending on available system resources
Acts as a device database or memory map container directly on the PC, no physical hardware required
Retains tag values between server runs, so your data survives restarts
On V6.15 and higher, set a user-configurable persistence rate from 5 to 60 seconds
Automatically saves and restores tag values, protecting against unexpected data loss
Maximum Channels
Up to 100
Maximum Devices per Channel
Up to 999 (practical limits vary based on available system resources)
Device Type
Virtual device database / memory map container (PC-based, no physical hardware required)
Item Persistence
Retains tag values between server runs, with a user-configurable persistence rate from 5 to 60 seconds (V6.15 and higher)
Architecture
Multi-threaded architecture for high scalability
Redundancy & Diagnostics
Built-in device/network redundancy, auto-demotion, and extensive communication and server diagnostics
Note: For a complete list of supported models and firmware versions, please contact our technical support team or download the driver documentation.
Everything you need to get started, configure, and troubleshoot your driver
Complete information containing driver help documentation.
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 setup
View →Comprehensive troubleshooting guide for common TOP Server issues
View →View the complete TOP Server release history and version information
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