{"product_id":"allen-bradley-1747-l551-slc-5-05-ethernet-cpu-processor-module","title":"Allen-Bradley 1747-L551 | SLC 5\/05 Ethernet CPU Processor Module","description":"\u003ch2 style=\"color: #1976d2; font-weight: bold; font-size: 1.6em; margin-bottom: 15px;\"\u003e\n  \u003cspan style=\"color: #1976d2; font-weight: bold;\"\u003eAllen-Bradley 1747-L551\u003c\/span\u003e SLC 5\/05 Ethernet CPU Processor Module\n\u003c\/h2\u003e\n\n\u003cp style=\"font-size: 1em; line-height: 1.5; color: #333; margin-bottom: 20px;\"\u003e\n  The Allen-Bradley 1747-L551 is a high-performance SLC 5\/05 modular processor designed for demanding industrial automation and discrete control applications. Featuring 16 KB of battery-backed user memory (expandable up to 64K via the 1747-M13 module), this processor manages up to 4,096 input\/output points and 480 analog I\/O channels. Equipped with an integrated 10\/100 Mbps Ethernet port and an RS-232 communication channel supporting DF1 and DH-485 protocols, it delivers fast program execution speeds of 0.9 ms\/K. Designed for slot zero installation in SLC 500 chassis systems, it ensures robust plant-wide networking, HMI integration, and real-time process monitoring. Weighing approximately 0.5 kg (1.1 lbs), it provides a compact yet powerful computing core for industrial control enclosures.\n\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1976d2; font-weight: bold; font-size: 1.3em; margin-top: 20px; margin-bottom: 10px;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-bottom: 20px; font-size: 0.95em;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold; color: #333; width: 40%;\"\u003eManufacturer \u0026amp; Brand\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; color: #555;\"\u003eAllen-Bradley \/ Rockwell Automation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold; color: #333;\"\u003eCatalog Number \/ Part No.\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; color: #555; font-weight: bold; color: #d32f2f;\"\u003e1747-L551\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold; color: #333;\"\u003eProduct Family \u0026amp; Series\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; color: #555;\"\u003eSLC 500 \/ SLC 5\/05 Modular Processor\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold; color: #333;\"\u003eUser Memory \u0026amp; Backup\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; color: #555;\"\u003e16 KB (16,000 Words) RAM | Optional 1747-M13 (64K) \u0026amp; 1747-BA Battery\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold; color: #333;\"\u003eI\/O Capacity \u0026amp; Limits\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; color: #555;\"\u003e4,096 Inputs \/ 4,096 Outputs | 480 Analog I\/O | Max 30 Chassis Slots\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold; color: #333;\"\u003eCommunication Ports\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; color: #555;\"\u003e1x 10\/100 Base-T Ethernet Port | 1x RS-232 Channel (DF1, DH-485, Modem)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold; color: #333;\"\u003eScan Time Performance\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; color: #555;\"\u003eProgram Scan: 0.9 ms\/K | I\/O Scan: 0.225 ms\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold; color: #333;\"\u003eEnvironmental Limits\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; color: #555;\"\u003eOperating Temp: 0°C to 60°C (32°F to 140°F) | 5–95% Non-Condensing Humidity\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold; color: #333;\"\u003eShock \u0026amp; Vibration Resistance\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; color: #555;\"\u003eOperating Shock: 30G | Operating Vibration: 2.5G @ 5–2000 Hz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold; color: #333;\"\u003eChassis Slot \u0026amp; Net Weight\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; color: #555;\"\u003eExclusive Slot 0 (Zero) Installation | Approx. Net Weight: 0.5 kg (1.1 lbs)\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3 style=\"color: #1976d2; font-weight: bold; font-size: 1.3em; margin-top: 20px; margin-bottom: 10px;\"\u003eQuick Installation Guide\u003c\/h3\u003e\n\u003cul style=\"padding-left: 20px; line-height: 1.5; color: #333; margin-bottom: 20px;\"\u003e\n  \u003cli style=\"margin-bottom: 6px;\"\u003eEnsure all chassis power is disconnected before installing or removing the 1747-L551 processor module.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 6px;\"\u003eInsert the processor securely into Slot 0 (the leftmost slot) of the primary SLC 500 modular chassis.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 6px;\"\u003eConnect Ethernet and RS-232 communication cables, verify battery and memory module seating, then restore power to initiate system startup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1976d2; font-weight: bold; font-size: 1.3em; margin-top: 20px; margin-bottom: 10px;\"\u003eTechnical FAQs\u003c\/h3\u003e\n\u003cp style=\"margin-bottom: 8px; color: #333; line-height: 1.4;\"\u003e\n  \u003cstrong\u003eQ1: What is the user memory capacity of the Allen-Bradley 1747-L551 processor?\u003c\/strong\u003e\u003cbr\u003e\n  A1: It comes with 16 KB (16,000 words) of user memory, which can be expanded up to 64K using an optional 1747-M13 memory module.\n\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 8px; color: #333; line-height: 1.4;\"\u003e\n  \u003cstrong\u003eQ2: Which communication interfaces are built directly onto this SLC 5\/05 module?\u003c\/strong\u003e\u003cbr\u003e\n  A2: It features an integrated 10\/100 Base-T Ethernet port for high-speed messaging and an RS-232 port supporting DF1 full\/half-duplex and DH-485 protocols.\n\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 8px; color: #333; line-height: 1.4;\"\u003e\n  \u003cstrong\u003eQ3: In which slot of the chassis must the 1747-L551 processor be installed?\u003c\/strong\u003e\u003cbr\u003e\n  A3: This processor is designed to be exclusively installed in Slot 0 (the first slot on the left) of the SLC 500 chassis.\n\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":67852701204612,"sku":"1747-L551","price":190.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/7454\/7844\/files\/1747-L551.jpg?v=1793020960","url":"https:\/\/www.etowonauto.com\/uz\/products\/allen-bradley-1747-l551-slc-5-05-ethernet-cpu-processor-module","provider":"Etowon Auto","version":"1.0","type":"link"}