Since you cannot just click a "Download" button on the public Rockwell website, follow this official path.
RSLogix 5000 v20.04 can coexist with other versions (like v32 or v19) on the same machine. Rslogix 5000 Version 20.04 Download
RSLogix 5000 Version 20.04 is a critical firmware and software release in the Rockwell Automation ecosystem. It serves as a bridge for legacy ControlLogix and CompactLogix controllers before the platform transitioned to Studio 5000 Logix Designer. If you maintain industrial control systems running hardware like the ControlLogix 1756 or CompactLogix 1769 series, Version 20.04 is often the exact environment required to open, edit, and troubleshoot your specific PLC programs. The Significance of Version 20.04 Since you cannot just click a "Download" button
This comprehensive guide covers everything you need to know about safely sourcing RSLogix 5000 v20.04, handling its specific compatibility quirks, and executing a flawless installation. Why Version 20.04 Matters: The Firmware Lock It serves as a bridge for legacy ControlLogix