If your installation files are corrupted, completely uninstall RSLogix 500 via the Windows Control Panel, restart the machine, and install the latest available revision patch from the Rockwell Automation Product Compatibility and Download Center (PCDC). Summary of Best Practices
The activation is exclusive—it cannot be active on two computers at once. The "Last" Version:
Have a story about your own “Master Disk Exclusive” experience? Share it in the comments below (or on the PLCTalk.net forum). For more deep dives into legacy Rockwell software, subscribe to our Automation Archaeology newsletter.
Ten years later, I was working IT at a small dairy bottling plant in central Wisconsin. We had a line that ran on three SLC 5/04 processors—the same ones my father used to program. The plant manager, a frantic man named Doug, came running into my office one Tuesday.
As a CPR9 release, it aligns its data logs, security configurations, and tag structures smoothly with FactoryTalk View ME/SE HMI software of the same era.
Modern PCs lack floppy drives; you may need a USB floppy drive or an .ima disk image tool.
This article is for informational purposes. Rockwell Automation, RSLogix, and Master Disk are trademarks of Rockwell Automation. Ensure all licensing is legally obtained.
Longtime RSLogix users in the automation community note several key points about CPR 9 and Master Disk systems:
Rockwell Automation's RSLogix 500 remains a cornerstone software for programming SLC 500 and MicroLogix programmable logic controllers (PLCs). Even as industrial automation transitions toward modern integrated development environments like Studio 5000, thousands of legacy systems worldwide still depend entirely on RSLogix 500. Version 8.10.00, released under the Coordinated Product Release 9 (CPR9) umbrella, represents a critical evolutionary step in this software's history—specifically regarding how licenses are managed, activated, and protected.
Troubleshooting RSLogix 500 "81000 CPR9 W Master Disk Exclusive" Errors
This version was the "last call" for users who preferred managing licenses without a server-based manager. Starting with version 9.00 and later, Rockwell required FactoryTalk Activation Manager , making the Master Disk method obsolete. Rockwell Automation Key Features in Version 8.10 RSLogix 500: Windows 11 Compatibility
If a computer previously hosted an older version of RSLogix 500 that used EVMOVE (floppy disk) activations, upgrading the software sometimes leaves behind legacy registry keys. The software attempts to read a physical disk configuration that no longer exists on modern hardware. 2. FactoryTalk Activation Manager Mismatch
Rockwell Software anticipated that engineers might need to use RSLogix 500 on multiple computers (e.g., a desktop for development and a laptop for fieldwork). The utility handles license transfers.
The is a snapshot of an earlier era in industrial automation software—perpetual, physical-media-tied, and offline. It remains functional for maintaining legacy SLC and MicroLogix systems but is wholly obsolete for new development or modern IT/OT security environments. Users still relying on this package should plan for either license conversion or hardware migration before critical failures of floppy drives or OS obsolescence render the master disk unusable.
The "W" suffix likely refers to the Windows version of the Master Disk utilities (e.g., EVMOVE.EXE for 16-bit systems vs. EVMOVEW.EXE for 32-bit Windows), distinguishing it from older DOS-based activation systems.
If your installation files are corrupted, completely uninstall RSLogix 500 via the Windows Control Panel, restart the machine, and install the latest available revision patch from the Rockwell Automation Product Compatibility and Download Center (PCDC). Summary of Best Practices
The activation is exclusive—it cannot be active on two computers at once. The "Last" Version:
Have a story about your own “Master Disk Exclusive” experience? Share it in the comments below (or on the PLCTalk.net forum). For more deep dives into legacy Rockwell software, subscribe to our Automation Archaeology newsletter.
Ten years later, I was working IT at a small dairy bottling plant in central Wisconsin. We had a line that ran on three SLC 5/04 processors—the same ones my father used to program. The plant manager, a frantic man named Doug, came running into my office one Tuesday. rslogix 500 81000 cpr9 w master disk exclusive
As a CPR9 release, it aligns its data logs, security configurations, and tag structures smoothly with FactoryTalk View ME/SE HMI software of the same era.
Modern PCs lack floppy drives; you may need a USB floppy drive or an .ima disk image tool.
This article is for informational purposes. Rockwell Automation, RSLogix, and Master Disk are trademarks of Rockwell Automation. Ensure all licensing is legally obtained. Share it in the comments below (or on the PLCTalk
Longtime RSLogix users in the automation community note several key points about CPR 9 and Master Disk systems:
Rockwell Automation's RSLogix 500 remains a cornerstone software for programming SLC 500 and MicroLogix programmable logic controllers (PLCs). Even as industrial automation transitions toward modern integrated development environments like Studio 5000, thousands of legacy systems worldwide still depend entirely on RSLogix 500. Version 8.10.00, released under the Coordinated Product Release 9 (CPR9) umbrella, represents a critical evolutionary step in this software's history—specifically regarding how licenses are managed, activated, and protected.
Troubleshooting RSLogix 500 "81000 CPR9 W Master Disk Exclusive" Errors We had a line that ran on three
This version was the "last call" for users who preferred managing licenses without a server-based manager. Starting with version 9.00 and later, Rockwell required FactoryTalk Activation Manager , making the Master Disk method obsolete. Rockwell Automation Key Features in Version 8.10 RSLogix 500: Windows 11 Compatibility
If a computer previously hosted an older version of RSLogix 500 that used EVMOVE (floppy disk) activations, upgrading the software sometimes leaves behind legacy registry keys. The software attempts to read a physical disk configuration that no longer exists on modern hardware. 2. FactoryTalk Activation Manager Mismatch
Rockwell Software anticipated that engineers might need to use RSLogix 500 on multiple computers (e.g., a desktop for development and a laptop for fieldwork). The utility handles license transfers.
The is a snapshot of an earlier era in industrial automation software—perpetual, physical-media-tied, and offline. It remains functional for maintaining legacy SLC and MicroLogix systems but is wholly obsolete for new development or modern IT/OT security environments. Users still relying on this package should plan for either license conversion or hardware migration before critical failures of floppy drives or OS obsolescence render the master disk unusable.
The "W" suffix likely refers to the Windows version of the Master Disk utilities (e.g., EVMOVE.EXE for 16-bit systems vs. EVMOVEW.EXE for 32-bit Windows), distinguishing it from older DOS-based activation systems.
_20220927143243.png)
