: In the Logix5000 world, your software version must match the major firmware version of the controller. If your PLC is running firmware 16.x, you must use RSLogix 5000 V16 to go online.
RSLogix 5000 Version 16 was released in the late 2000s. It was a stable workhorse. Many factories invested millions in ControlLogix systems running firmware revision 16. Upgrading those controllers to a newer firmware (say V20 or V32) is not a simple "update." Rslogix 5000 V16 Download REPACK
This article outlines how to legally and securely obtain RSLogix 5000 V16 and resolve common installation hurdles. How to Legally Download RSLogix 5000 V16 : In the Logix5000 world, your software version