A: RSLogix 5000 v20.04 saves .ACD files. By default in Documents\RSLogix 5000\Projects\ . You cannot open these in any software older than v20.
A: Yes. Download the v20.04 Update Patch from PCDC (approx. 500 MB). Run it over your existing 20.01 or 20.03 installation. Rslogix 5000 Version 20.04 Download
A: No. Not even under compatibility mode. Use a Windows 7 VM. A: RSLogix 5000 v20
Introduction: Why Version 20.04 Still Matters In the rapidly evolving world of industrial automation, Rockwell Automation’s Studio 5000 (formerly RSLogix 5000) has set the standard for programmable automation controller (PAC) programming. While the industry has largely migrated to the newer Studio 5000 Logix Designer (versions 21, 24, 30, 31, and beyond), RSLogix 5000 Version 20.04 remains a critical tool for thousands of manufacturing plants worldwide. A: Yes
Contact your local Rockwell Automation distributor or open a support ticket via the Rockwell Knowledgebase (Article ID: 1055397 covers legacy installation errors). Last updated: March 2025. This article is for informational purposes only. Rockwell Automation, RSLogix, and Studio 5000 are trademarks of Rockwell Automation, Inc.
Why? Because many production lines commissioned between 2012 and 2015 were programmed with Version 20.xx. Upgrading these lines to newer firmware is often costly, time-consuming, and risk-prone. As a result, has become the "golden build"—a stable, mature, and widely trusted release for maintaining legacy ControlLogix and CompactLogix systems.