Allen-Bradley 1771-KF Data Highway RS-232C Interface Module

The Allen-Bradley 1771-KF Data Highway RS-232-C Interface Module is a stand-alone bridge that connects RS-232-C serial devices to an Allen-Bradley Data Highway network, enabling direct data exchange with a PLC-5 controller. Designed for PLC-5 Data Highway installations, the KF module provides a dedicated RS-232-C port and connectors for both the Data Highway and RS-232-C devices, allowing a serial device to communicate with the DH network through the module without requiring additional hardware. As part of the 1771 family, this interface expands serial communications into the Data Highway environment, supporting standalone operation within industrial automation setups that rely on AB hardware. The unit serves as a bridge between legacy RS-232-C equipment and the Data Highway, facilitating bidirectional data exchange and control signaling with the PLC while preserving integration with AB components in the data network. This arrangement enables serial peripherals to participate in the DH network and interact with the PLC-5 controller, extending legacy RS-232-C devices into modern automation networks, and providing a practical path for incorporating serial instrumentation, terminals, or other serial-enabled devices into a Data Highway-based control scheme.