The Allen-Bradley 1764-28BXB1 is a MicroLogix 1500 PLC controller by Rockwell Automation. Here are some details about this controller:

• The 1764 prefix indicates that it is part of the Allen-Bradley MicroLogix family, specifically the MicroLogix 1500 series.

The MicroLogix 1500 series PLCs are compact, cost-effective controllers designed for small to medium-sized automation applications. They offer a range of digital and analog I/O options, as well as support for communication protocols such as RS-232, RS-485, and Ethernet.

The 1764-28BXB1 model specifically refers to the MicroLogix 1500 controller with integrated I/O. It features 28 digital inputs and 16 digital outputs built into the controller itself, providing a compact solution for applications with a moderate number of I/O points.

The programming and configuration of the MicroLogix 1500 series controllers are typically done using the RSLogix 500 programming software, which is specifically designed for Allen-Bradley programmable controllers. This software allows users to develop ladder logic programs, configure I/O modules, and communicate with the PLC controller.