Allen-Bradley 1761-L16BBB is a MicroLogix 1000 16-point controller module that integrates 24V DC input/output in a compact PLC interface. It provides 10 digital inputs and 6 outputs—split into four MOSFET sourcing outputs and two relay-contact outputs—for a total of 16 I/O points in a single unit. It is powered by 24V DC, communicates via RS-232 using the DF1 protocol, and contains 1 KB of onboard memory. The module's published form-factor lists a depth of 40 and a height of 80, and Rockwell Automation notes that this model is discontinued as of April 7, 2017, with a standard warranty duration of 1 year.
