Allen-Bradley 1771-KA2 Adapter Module

Allen-Bradley 1771-KA2 is a Data Highway PLC-2 Series A communication adapter module that links PLC-2 family controllers to the Data Highway network. It provides three ports: a Program Interface Port at 9.6 kbaud, a Data Highway Port at 57.6 kbaud, and a Processor Port at 91.2 kbaud, enabling programming data exchange, high-speed Data Highway traffic, and inter-processor communication. In PLC-2 installations, the KA2 connects PLC-2 CPUs and Data Highway devices to support distributed control across the Data Highway network. Documentation identifies the unit as a Series A Communication Adapter Module (model 1771-KA2) designed for Data Highway PLC-2 networks.