Rslogix 5000 Firmware 20.12 Jun 2026

RSLogix 5000 v20.12: The "Ghost" Version and What You Need to Know

Use the Rockwell BOOTP/DHCP utility to reassign the original static IP address. Best Practices for Legacy System Maintenance

Firmware: 20.12 Software: RSLogix 5000 v20.01 – 20.06 Flash Utility: ControlFLASH 14+ Max Controller: 1756-L75 (ControlLogix) / 1769-L36ERM (CompactLogix) Safety: GuardLogix 5570 (L6S, L7S) Motion: Kinetix 5500, 5700, Ultra 3000 (SERCOS) Language: Ladder, FBD, ST, SFC File Extension: .ACD (RSLogix 5000 format, not Studio 5000)

Version 20 supports the controller, along with GuardLogix variants 1756‑L72S and 1756‑L73S. On the CompactLogix side, the 5370 L1, L2, and L3 families are supported, along with the Kinetix 350 servo drive family.

⚠️ Firmware 20.12 is not compatible with Studio 5000. You must use RSLogix 5000 v20.01.00 (or later CPR 9 SR 5) . rslogix 5000 firmware 20.12

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Rockwell Automation released v20.12 primarily as a maintenance and security patch. It resolved several critical issues present in earlier v20 revisions (like v20.01 and v20.03).

Incorporates security improvements aimed at protecting your infrastructure. How to Upgrade to Firmware 20.12

Restores normal file sharing; includes modern single-click online edits. Hardware Supported by Firmware 20.12 RSLogix 5000 v20

Improved security protocols and vulnerability disclosures.

Updating a controller to or from version 20.12 involves specific steps using the utility:

If you have a machine currently running stable on Firmware 20.12, the golden rule of automation applies:

Firmware version 20.12 is highly notable because it serves as a critical security and resiliency update. Rockwell Automation released this specific minor revision to patch known vulnerabilities and improve controller stability against memory corruption and unauthorized communication disruptions. ⚠️ Firmware 20

RSLogix 5000 Firmware 20.12 is not merely an "update"; it is a vital security and stability maintenance tool. If you are operating a mature Allen-Bradley system, upgrading to to patch vulnerabilities while maintaining the functionality of your existing ladder logic, HMI, and communication drivers.

RSLogix 5000 v20.04, v20.05 and v20.06 Compatibility Information

This is because of changes in the tag database and safety certification structures.