20.12 ((link)) | Rslogix 5000 Firmware

“The file was created with a newer version of RSLogix 5000.”

(typically version 20.01 or 20.03). Version 20 is the final version of the "RSLogix" brand before Rockwell transitioned to "Studio 5000 Logix Designer" for version 21 and above. Version Numbering Product Compatibility and Download Center (PCDC) , it is often labeled , but it appears as rslogix 5000 firmware 20.12

GuardLogix v20.12 allows slightly more flexible safety task execution timing than v21+’s stricter safety partner pairing. “The file was created with a newer version of RSLogix 5000