I felt a chill. Not from the room—from memory. The before-times.
Released around 2008–2009, this version introduced crucial enhancements for then-new hardware. Rockwell Automation MicroLogix 1400 Support: rslogix 500 81000 cpr9 w master disk exclusive
| Aspect | Modern RSLogix 500 (v12+) | CPR9 Master Disk Exclusive | |--------|---------------------------|----------------------------| | | FactoryTalk Activation – requires internet or phone call | No activation – disk itself is license | | OS Compatibility | Windows 10/11 (64‑bit) only via virtual machine | Native on XP/Vista, ideal for legacy panels | | Driver support | No 1747‑PIC driver (DH‑485 via UIC only) | Includes 1747‑PIC for old PC serial ports | | Offline use | Requires periodic check‑in (depending on license) | Works completely offline forever | | Cost | $1,000+ per license (or subscription) | One‑time purchase (if found) | I felt a chill
: The master disk exclusive model uses weak copy protection (often just a volume label or non-cryptographic sector check). While this does not affect functional security of your PLC code, the software itself is not FIPS 140-2 compliant and should not be used in regulated environments requiring modern access control (e.g., NERC CIP, FDA 21 CFR Part 11 without additional validation). If the above steps fail, a system reboot
If the above steps fail, a system reboot is required to flush memory-resident file handles held by Windows or RSLinx services that are not releasing the "Master Disk" status.