Allen-Bradley 1756-HIST2G FactoryTalk Historian ME Module

Allen-Bradley 1756-HIST2G is a FactoryTalk Historian Machine Edition (ME) module designed for ControlLogix backplanes, delivering 2 GB of embedded historical data storage to capture and retain tag-based process data directly in the rack. This Series B module integrates with FactoryTalk Historian ME software to collect, log, and organize plant data from connected controllers, enabling local history with streamlined configuration and maintenance within the ControlLogix chassis. Firmware for the module includes releases such as version 3.056 (January 2021), and the product is explicitly identified by catalog number 1756-HIST2G. In the event of sudden power loss, the documentation notes that a minimal amount of data may be lost, highlighting its in-rack data retention behavior. Installation is performed per Rockwell Automation guidance for mounting the module in the chassis, with resources covering module information, battery considerations, and ongoing maintenance. The Historian ME module is designed to work with FactoryTalk Historian ME, and in compatible configurations can forward data to Historian SE or PI Server for broader data integration and reporting.