{"product_id":"allen-bradley-1747-dcm-data-communications-module","title":"Allen-Bradley 1747-DCM Data Communications Module","description":"\u003cdiv\u003e\u003cp\u003eThe Allen-Bradley 1747-DCM Direct Communication Module provides on-network data exchange for SLC 500 systems via the Remote I\/O (RIO) Link, enabling distributed processing between supervisory controllers and distributed SLC‑500 processors or expansion racks. It is installed in an SLC 500 backplane and communicates across the RIO network to transfer data between devices on the same system. Key specifications include selectable data rates of 57.6, 115.2, or 230.4 kilobits per second, and visible status indicators that help diagnose operation: a COMM LED to signal active communication and a FAULT LED for errors. The module uses DIP switches to configure essential network addressing and rack-related settings, such as the rack address, the number of remote racks, and the last-rack flag, enabling flexible topologies within a single controller hierarchy. Common applications for the 1747‑DCM include bridging data between a supervisory processor and distributed SLC‑500 I\/O or between multiple SLC‑500 controllers on a single RIO network, enabling distributed data sharing without a dedicated gateway. This makes it suitable for legacy automation architectures where reliable, direct RIO communications between controllers and I\/O blocks are required. \u003c\/p\u003e\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"New","offer_id":51658961944878,"sku":null,"price":725.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_8f418cdb-7704-4615-a042-5e61d0fdd52e.jpg?v=1769526028","url":"https:\/\/plgautomation.com\/products\/allen-bradley-1747-dcm-data-communications-module","provider":"PLG Automation ","version":"1.0","type":"link"}