Rslogix 5000 Firmware 20.12 -

The "20" denotes the major version, while the ".12" indicates the minor revision or patch level. This version is the final build in the v20 series, which holds a unique place in Rockwell history. V20 was the last firmware version to be programmed exclusively with the legacy software interface. Starting with version 21, Rockwell transitioned to the Studio 5000 environment, which unified controller programming with view design (FactoryTalk View ME) and other engineering tools.

RSLogix 5000 firmware 20.12 (listed as 20.012 in the PCDC) is a maintenance release for ControlLogix and CompactLogix controllers that resolves specific hardware anomalies and ensures compatibility with version 20 software. The firmware supports various legacy hardware, including CompactLogix L3x/L2x and 1756-L6x controllers, and requires a two-step upgrade process for older revisions. For detailed release notes on specific hardware, visit Rockwell Automation Literature . rslogix 5000 firmware 20.12