Allen-Bradley 1762-L40BXBR MicroLogix 1200 PLC Controller By wayne No Comments on Allen-Bradley 1762-L40BXBR MicroLogix 1200 PLC Controller 3 Min Read The 1762-L40BXBR is a 40-I/O MicroLogix 1200 PLC from Allen-Bradley. It features relay, FET outputs, and multiple communication protocols for robust control.