Allen-Bradley 1-D31771 Control Board is a printed circuit board that serves as a control/interface module within select legacy Allen-Bradley/Rockwell Automation systems. In distributor listings it appears as 1D31771 and is also offered as D31771-1 PC Board PLC/Add-On Board, signaling its role as a replaceable board inside an industrial automation installation. The exact electrical ratings, connector configurations, and host compatibility vary by machine model, so refer to the original equipment documentation or the equipment manufacturer to confirm fitment and installation requirements.
