{"product_id":"allen-bradley-1747-l543-c-slc-5-04-processor-module","title":"Allen-Bradley 1747-L543\/C SLC 5\/04 Processor Module","description":"\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eAllen-Bradley 1747-L543\/C SLC 5\/04 Processor Module\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1747-L543\/C\u003c\/strong\u003e, also cataloged as the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1747-L543\/C\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSLC 5\/04 processor module, operates as a dedicated CPU execution unit for scan-based logic processing and I\/O image table management within SLC 500 backplane architectures.\u003c\/p\u003e\n\u003cp\u003eConfigured for large-scale cyclic control execution in SLC 5\/04 networks, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1747-L543\/C\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(\u003cstrong\u003e1747-L543\/C\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCPU processor module) provides deterministic instruction processing across distributed digital and analog I\/O systems using 64K-word memory and multi-protocol communication interfaces.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cp\u003eThe suffix “\/C” denotes a revision-level hardware configuration within the 1747-L543 product family. No functional differentiation is defined in the provided dataset; core execution, memory mapping, and communication behavior remain consistent across SLC 5\/04 architecture variants.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth class=\"last:pe-10\"\u003eParameter\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1747-L543\/C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.31 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e~4 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory Capacity\u003c\/td\u003e\n\u003ctd\u003e64K words\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Digital I\/O\u003c\/td\u003e\n\u003ctd\u003e8192\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Analog I\/O\u003c\/td\u003e\n\u003ctd\u003e480\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Ports\u003c\/td\u003e\n\u003ctd\u003eRS-232, DH-485, DH+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Architecture\u003c\/td\u003e\n\u003ctd\u003eSLC 500 \/ SLC 5\/04\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eBackplane Execution, I\/O Scaling \u0026amp; Network Determinism\u003c\/h3\u003e\n\u003cp\u003eWithin the\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003eRockwell Automation\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eSLC 500 control architecture, the 1747-L543\/C executes cyclic scan logic through backplane-synchronized memory exchange between CPU, local chassis, and distributed I\/O adapters. The processor maintains a unified I\/O image table covering up to 8192 discrete and 480 analog points, enabling deterministic state updates during each scan cycle.\u003c\/p\u003e\n\u003cp\u003eBackplane bus communication velocity is governed by scan-based execution timing (~0.9 ms\/K instruction typical), where instruction sequencing is processed from 64K-word memory in linear execution order. Communication handling is integrated through RS-232, DH-485, and DH+ channels, enabling multi-layer data exchange between local control logic and remote I\/O segments.\u003c\/p\u003e\n\u003cp\u003eI\/O density scaling is achieved via chassis expansion (up to 3 chassis \/ 30 slots) and distributed I\/O adapters such as DeviceNet interfaces, where memory-mapped addressing maintains deterministic synchronization across heterogeneous networks.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1747-L543\/C support simultaneous use of DH+ and DH-485 networks?\u003cbr\u003eA: Yes. Communication ports operate independently, allowing concurrent DH+ and DH-485 operation without shared timing arbitration.\u003c\/p\u003e\n\u003cp\u003eQ: What limits the maximum I\/O capacity of the controller?\u003cbr\u003eA: Limits are defined by I\/O image table size and chassis segmentation, supporting up to 8192 digital and 480 analog points within system architecture constraints.\u003c\/p\u003e\n\u003cp\u003eQ: Can the processor be hot-swapped during operation?\u003cbr\u003eA: No hot-swapping is supported. CPU replacement requires full system power removal to avoid backplane data corruption.\u003c\/p\u003e\n\u003chr\u003e\u003chr\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eInstall CPU module into SLC 500 chassis with full backplane connector engagement.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnsure chassis power is fully isolated before insertion or removal of processor unit.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaintain shielded separation between communication cables (DH+, RS-232) and power conductors.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eVerify correct chassis addressing when using multiple chassis configurations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnsure grounding continuity across all racks to stabilize backplane reference potential.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eConfirm firmware and memory backup integrity prior to commissioning sequence.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43551804162138,"sku":"1747-L543\/C","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1747-L543C2.jpg?v=1782359491","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1747-l543-c-slc-5-04-processor-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}