Allen-Bradley 1771-KG RS-232-C Port Interface Module

Allen-Bradley 1771-KG RS-232-C Port Interface Module is a PLC-2 family accessory that provides a dedicated RS-232-C serial interface for direct communication with the PLC-2 controller. It exposes three distinct connections: a single RS-232-C serial port for connection to a PC or other serial devices, a Program Interface Port for Data Highway program access, and a Processor Port for direct communication with the PLC-2 processor. Designed for use in PLC-2 installations, the 1771-KG expands serial data exchange, program loading, and monitoring capabilities by wiring into the controller’s I/O rack. The module is identified as the RS-232-C Port Interface Module within the PLC-2 RS-232-C Interface Module family, enabling dependable serial interfacing in legacy industrial control systems.