{"product_id":"allen-bradley-1784-pcd-data-highway-plus-interface-card","title":"Allen-Bradley 1784-PCD Data Highway Plus Interface Card","description":"\u003cdiv\u003e\u003cp\u003eAllen-Bradley 1784-PCD Data Highway Plus Interface Card is a legacy computer interface that provides Data Highway Plus (DH+) connectivity from a workstation to AB DH+ networks. Specifically designed to bridge a PC to the AB DH+ fieldbus, the 1784-PCD enables PC-based monitoring, diagnostics, and configuration of DH+-connected controllers and devices without altering the DH+ backbone. As part of Allen-Bradley's 1784 interface family, this card is commonly used in older automation setups to integrate desktop-era software with PLCs and remote I\/O on DH+ networks, facilitating data exchange and program access through compatible software and cabling. Typical applications include equipment commissioning, on-site diagnostics, and ongoing maintenance of legacy AB systems where DH+ remains in operation, allowing operators to access controller data, I\/O status, and program logic from a PC. This interface card is intended for use in historical automation environments, offering a direct hardware path between a PC and the DH+ network to support legacy control architectures while preserving existing DH+ infrastructure.\u003c\/p\u003e\u003c\/div\u003e","brand":"Rockwell","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":46284534841578,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8039\/3450\/files\/GTG-STOCK-023.png?v=1788727428","url":"https:\/\/gtghardware.com\/products\/allen-bradley-1784-pcd-data-highway-plus-interface-card","provider":"GTG Hardware","version":"1.0","type":"link"}