| Controller Family | Supported Models | Minimum Firmware Version | |---|---|---| | | 1756‑L61, L62, L63, L64, L65, L71, L72, L73, L74, L75 | 20.12 | | ControlLogix‑XT | 1756‑L63XT, L73XT | 20.12 | | GuardLogix | 1756‑L61S, L62S, L63S, LSP, L71S, L72S, L73S, L7SP | 20.12 | | CompactLogix | 1769‑L16ER, L18ER, L18ERM, L24ER, L24ER‑QBFC1B, L27ERM, and all L3 series | 20.12 | | Kinetix 350 | All models | 20.12 |
: With firmware 20.12, users benefit from enhanced diagnostic tools and features, making it easier to identify and troubleshoot issues. This includes more detailed error messages, improved debugging capabilities, and enhanced monitoring of controller and I/O performance.
Ensure your PC has RSLogix 5000 v20.04 or v20.05 installed. If you are using v20.01 or v20.03, the software cannot parse the 20.12 firmware structures. 2. Minor Non-Recoverable Faults After Flash rslogix 5000 firmware 20.12
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Upgrading to RSLogix 5000 firmware 20.12 is a straightforward process that can be completed using Rockwell Automation's standard upgrade tools and procedures. Before upgrading, it is essential to: | Controller Family | Supported Models | Minimum
| Feature Category | Details for Firmware v20.x | | :--- | :--- | | | RSLogix 5000 | | Key New Controller Support | GuardLogix 5572S and 5573S safety controllers | | Major Compatibility Quirk | v20.03 created minor rev incompatibility; v20.04 (and later, likely v20.12) largely resolved this | | Hardware Endpoint | Many older Logix controllers (e.g., ControlLogix L6x series) reach their maximum supported firmware at v20 | | Controller Compatibility | Series B CompactLogix require v20 or later | | Security Concern | Affected by CVE-2021-22681 (critical severity, CVSS v3 score of 9.8) |
Follow the on-screen instructions to download the firmware. If you are using v20
: Improves EtherNet/IP bridging performance under heavy network traffic loads.
If you need to add new modules (like modern Stratix switches or newer servo drives), you will likely be forced to upgrade past v20.12, as new hardware Add-On Profiles rarely support firmware this old.
Flashing hardware to firmware 20.12 requires exact sequencing to avoid bricking your legacy controllers.
Open RSLogix 5000 and upload the current program from the controller. Save the program as a backup file (.ACD).