The Allen-Bradley 1747-KE is a DH-485 and RS-232C communication interface module designed for use with Allen-Bradley SLC 500 Programmable Logic Controllers (PLCs). This versatile communication module features one (1) configuration port, one (1) DF1 serial communication port, and one (1) DH-485 network interface, enabling efficient data exchange between industrial control devices. The 1747-KE module supports connection through 1747-C11, 1747-C13, or 1747-AIC link couplers for flexible network integration. It occupies a single slot and can be directly mounted to any SLC 500 chassis, providing reliable connectivity and stable communication in industrial automation and process control systems.