{"product_id":"allen-bradley-1747-l542-slc-500-rs-232-dh-controller","title":"Allen-Bradley 1747-L542 SLC 500 RS-232 DH Controller","description":"\u003cdiv\u003e\u003cp\u003eThe Allen‑Bradley 1747-L542 SLC 500 RS-232 DH Controller is a SLC 5\/04 CPU in the SLC 500 modular family, delivering 32K words of memory for program and data storage in a compact backplane-based module. It provides a built‑in RS‑232 programming port and a DH+ (Data Highway Plus) port for DH+ networking with other SLC 500 devices and HMIs. The unit supports a single local I\/O chassis with up to 30 I\/O slots, making it suitable for small-scale automation tasks. Backplane current draw is up to 1.0 A at 5 V DC and 200 mA at 24 V DC. The operating temperature range is 0 to 60 C (32 to 140 F). Common applications include simple machine control, process steps, and interfacing with RS-232 programming devices or DH+ networked devices in legacy control systems.\u003c\/p\u003e\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"New","offer_id":51659702632750,"sku":null,"price":2755.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_f9829e2b-080f-42dd-971e-890efa617e7f.jpg?v=1769529753","url":"https:\/\/plgautomation.com\/products\/allen-bradley-1747-l542-slc-500-rs-232-dh-controller","provider":"PLG Automation ","version":"1.0","type":"link"}