Assuming a legally-obtained, licensed copy of the software is where you got the master disk, the master disk contains "activation" PLCTalk.net
Ensure "Show hidden files/folders" is on; look for EVRSI.SYS in the root of C:\ . If it's missing, the activation is gone. To help you get back to programming, could you tell me:
Before we dive into use cases and installation, let us break down the string: . rslogix 500 81000 cpr9 w master disk exclusive
"Master Disk Exclusive," I whispered to myself. Unlimited seats. No phone home.
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. Assuming a legally-obtained, licensed copy of the software
, which allows for USB-based or node-locked digital files, removing the need for the old master disk. Industrial Monitor Direct 5. Summary Table Description 8.10.00 (CPR9) Primary Use SLC 500, MicroLogix (1000/1100/1200/1400/1500) Activation Method EVRSI (Master Disk / Operating System Windows XP / Vista / Early 7 (32-bit) Key Addition MicroLogix 1400 Series A support Disclaimer: Ensure all software usage complies with the Rockwell Software License Agreement RSLogix 500 Replacement Master Disk Activation Guide
: Support for advanced math and trigonometric instructions like Expanded Communication : Added support for Modbus RTU Master DNP3 Slave "Master Disk Exclusive," I whispered to myself
If you have stumbled upon this keyword, you are likely either a seasoned controls engineer trying to resurrect an old production line, a historical software archivist, or a curious technician wondering what makes this “exclusive master disk” so special. This article will dissect every component of that keyword, explain its practical value, and outline why it remains relevant—even years after its original release.