{"product_id":"allen-bradley-1747-l551-slc-500-slc-5-05-processor-module","title":"Allen-Bradley 1747-L551 SLC 500 SLC 5\/05 Processor Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1747-L551\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003erepresents the high-performance tier of the SLC 500 platform, specifically featuring the SLC 5\/05 CPU architecture. This processor bridges the gap between legacy chassis-based control and modern industrial Ethernet networks, allowing for high-speed data exchange and remote programming capabilities. We supply this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Original\u003c\/strong\u003e, providing a critical lifecycle solution for maintaining high-density 1746 I\/O systems with contemporary networking requirements.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProcessor Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSLC 5\/05\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eUser Memory\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e16 K Words\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOn-Board Communication\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eEthernet and RS-232 (DH-485 via port)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMax Digital I\/O Capacity\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8192 Points\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMax Local Chassis\/Slots\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3 Chassis \/ 30 Slots\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eTypical Scan Time\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.9 ms per K\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBackplane Current (5V)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1000 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBackplane Current (24V)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e200 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProgramming Software\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRSLogix 500\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.5 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNative Ethernet Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1747-L551 features an on-board 10\/100 Mbps Ethernet port. This allows the processor to communicate directly with HMIs, SCADA systems, and other controllers over standard TCP\/IP protocols without requiring expensive external bridge modules or gateways.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRapid Instruction Execution:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWith a typical scan time of 0.9 ms per K, this CPU handles complex logic and math instructions with minimal latency. It executes 107 distinct programming instructions, including advanced PID control and bit-shift operations, ensuring precise control over high-speed process loops.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Density Scalability:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module manages up to 8,192 digital I\/O points across a maximum of 3 chassis and 30 slots. This scalability makes it the ideal anchor for large-scale manufacturing lines that require centralized control over hundreds of discrete sensors and actuators.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFlexible Program Storage:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIn addition to the internal 16K RAM, the processor supports optional flash EEPROM modules. This feature protects your critical logic against power failure and allows for hardware-based program updates without a PC connection in the field.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRobust Diagnostic Support:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe dual-port design (Ethernet and RS-232) enables simultaneous maintenance and operations. Technicians can perform online monitoring and program edits over Ethernet while the RS-232 port handles local barcode scanners or serial modem links.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan the 1747-L551 replace an older 1747-L541 (SLC 5\/04) processor?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, provided you update your network architecture. The SLC 5\/04 uses DH+ (Data Highway Plus), whereas the 1747-L551 utilizes Ethernet. You must transition your communication links to Ethernet, but the RSLogix 500 project logic remains highly compatible.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the significance of the 16K memory limit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 16K word memory provides ample space for medium-to-large programs, including extensive data logging and recipe management. If your application exceeds this capacity, you should consider the 32K or 64K versions of the SLC 5\/05.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I configure the IP address for the first time?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou can assign the IP address via the BOOTP\/DHCP utility provided by Rockwell Automation or through the RS-232 port using a 1747-CP3 cable and RSLinx. Once configured, you can perform all future programming via the Ethernet link.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this processor require a battery?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the 1747-L551 uses a 1747-BA lithium battery to retain the RAM contents during power-down. As this unit is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e, we recommend verifying the battery installation date during commissioning to ensure maximum data retention security.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":53382567067832,"sku":"1747-L551","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/1747-L551.jpg?v=1776929392","url":"https:\/\/www.globalpetroparts.com\/products\/allen-bradley-1747-l551-slc-500-slc-5-05-processor-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}