{"product_id":"allen-bradley-replacement-1747-dcm-direct-communication-module","title":"ALLEN-BRADLEY Replacement 1747-DCM Direct Communication Module","description":"\u003cdiv\u003e\u003cp\u003eThe ALLLEN 1747-DCM Direct Communication Module is a Remote I\/O bridge that links a supervisory PLC-5 or SLC 500 controller to a remote SLC 500 via the RIO (Remote I\/O) network, enabling a distributed processing arrangement within Rockwell Automation's older SLC 500 ecosystem. Unlike a standard I\/O scanner, the 1747-DCM does not scan its own backplane I\/O; instead it passes the supervisory data to the distributed SLC processor residing at the remote location, effectively presenting the remote chassis as a logical rack to the supervisor. Catalog number 1747-DCM, the module is used to connect an SLC 500 fixed controller with expansion chassis or any SLC 500 modular controller to a supervisory ALLLEN PLC through the RIO Link. This configuration allows data exchange between the supervisory controller and remote SLC components as part of a distributed processing system. A conformally coated variant exists (1747-DCM-CC), and Rockwell has published discontinuation for that variant as of March 31, 2014. Common applications include integrating remote SLC 500 I\/O groups into an AB control scheme via the RIO network and enabling direct communication between PLC-5\/AB supervisory systems and distributed SLC-500 processors without local I\/O scanning.\u003c\/p\u003e\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"New","offer_id":51659828232494,"sku":null,"price":943.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_074633e1-bb0d-4617-95ac-a8f67bd174f7.jpg?v=1769530059","url":"https:\/\/plgautomation.com\/products\/allen-bradley-replacement-1747-dcm-direct-communication-module","provider":"PLG Automation ","version":"1.0","type":"link"}