For the latest compatibility information, always consult Rockwell Automation’s Product Compatibility and Download Center (PCDC) before performing any firmware flash or software upgrade.
: Note that changing versions can sometimes cause issues with Add-On Instructions (AOIs) that were built on different versions. Why Version 20.12 specifically?
Version 20 is known for a major compatibility break that occurred between minor revisions, which significantly impacts how you manage firmware and software. rslogix 5000 firmware 20.12
RSLogix 5000 version 20 is a unique and critical major release in the Rockwell Automation lifecycle, as it is the final major version to carry the name before the platform evolved into Studio 5000 Logix Designer at version 21.
As one user aptly noted, if your processor is running firmware version 20.12, you can download to it using since the major revision matches. Version 20 is known for a major compatibility
: You can verify the current firmware of a connected PLC by expanding the communication path in RSLinx.
Updating a controller to or from version 20.12 involves specific steps using the utility: : You can verify the current firmware of
: The Logix CPU Security Tool does not work with controllers running firmware version 20. Attempting to use it results in a communication timeout. This issue does not affect earlier firmware revisions.
Avoid v20.03 unless your entire facility is standardized on it. Version 20.03 introduced a "resiliency" update that made files incompatible with older v20.01 software, causing significant headaches for maintenance teams. The Automation Blog 3. How to Check Your Current Setup