{"product_id":"allen-bradley-1747-l542-cpu-processors","title":"Allen-Bradley 1747-L542 CPU Processors","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1747-L542\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1747-L542\u003c\/strong\u003e Processor Module, operates as a dedicated hardware component for central logic execution and I\/O scan management within SLC 500 rack assemblies.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\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\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1747-L542\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.68 kg (1.50 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eSingle-slot SLC 500 chassis footprint\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\u003e4 W total power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Memory\u003c\/td\u003e\n\u003ctd\u003e32K words\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Discrete I\/O Capacity\u003c\/td\u003e\n\u003ctd\u003e4096 inputs, 4096 outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Local Chassis Support\u003c\/td\u003e\n\u003ctd\u003eUp to 3 chassis (30 total slots)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProgram Execution Speed\u003c\/td\u003e\n\u003ctd\u003e0.9 ms\/K typical scan time\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProgramming Instruction Set\u003c\/td\u003e\n\u003ctd\u003e107 instructions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Shock Rating\u003c\/td\u003e\n\u003ctd\u003e30 G\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e5 to 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to 85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eDeterministic Backplane \u0026amp; EtherNet\/IP Networks\u003c\/h3\u003e\n\u003cp\u003eThe processor executes real-time ladder logic and control loops across a maximum addressable field I\/O space of 4096 discrete inputs and 4096 discrete outputs. Internal firmware flash compatibility ensures synchronized cyclic scanning of local backplane modules across up to 3 interconnecting chassis frames (30 total slots). High-speed data processing algorithms deliver a execution scan time of 0.9 ms per kiloword, maintaining deterministic network data exchange without adding latency across connected industrial communication channels.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the maximum physical expansion limit supported by the 1747-L542 in a local rack setup?\u003c\/p\u003e\n\u003cp\u003eA: The processor supports local expansion across a maximum configuration of 3 chassis or up to 30 total I\/O module slots.\u003c\/p\u003e\n\u003cp\u003eQ: What power consumption overhead must be calculated for the chassis power supply?\u003c\/p\u003e\n\u003cp\u003eA: The module exhibits a continuous total power dissipation rating of 4 W from the chassis backplane.\u003c\/p\u003e\n\u003cp\u003eQ: How does the 1747-L542 perform under high mechanical shock conditions?\u003c\/p\u003e\n\u003cp\u003eA: The hardware architecture is designed and tested to withstand continuous operational mechanical shock loads up to 30 G.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eVerify that the SLC 500 chassis power supply is completely powered down before installing or removing the CPU module. Align the 1747-L542 circuit board with the guide rails in Slot 0 of the master chassis, sliding the module inward until top and bottom lock levers snap into place.\u003c\/p\u003e\n\u003cp\u003eEstablish low-impedance grounding by securing the chassis frame directly to the enclosure mounting panel with clean metal-to-metal contact. Route all peripheral serial and communication cables away from high-voltage AC lines and variable frequency drives using separated wire channels. Observe proper electrostatic discharge precautions when handling the exposed card edge connectors to avoid component degradation.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":48791573495998,"sku":"1747-L542","price":96.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/1747-L542.png?v=1787819165","url":"https:\/\/www.autooiltech.com\/products\/allen-bradley-1747-l542-cpu-processors","provider":"AutoOilTech Limited","version":"1.0","type":"link"}