{"product_id":"allen-bradley-1747-l553-slc-5-05-controller-64k-memory","title":"Allen-Bradley 1747-L553 SLC 5\/05 Controller 64K Memory","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1747-L553\u003c\/strong\u003e is an SLC 5\/05 modular processor unit designed for medium-to-large programmable logic controller (PLC) applications within the 1746 SLC system architecture. Featuring 64 KB of user memory, this high-capacity controller executes ladder logic and communication routines, offering execution times as fast as 0.37 µs for bit instructions and a typical program scan time of 0.9 ms per kilobyte. The processor installs directly into slot 0 (the leftmost position) of any standard 1746 chassis, interfacing with up to 3 local chassis and managing up to 30 slots.\u003c\/p\u003e\n\u003cp\u003eEquipped with dual integrated communication ports, the \u003cstrong\u003e1747-L553\u003c\/strong\u003e provides Channel 1 Ethernet TCP\/IP connectivity along with a Channel 0 RS-232 serial interface. Channel 1 allows seamless plant-floor networking via standard 10Base-T Ethernet cabling, enabling high-speed peer-to-peer messaging, data acquisition, and programming connection through network hubs. Channel 0 supports versatile point-to-point and multi-drop serial configurations, including DF1 Full-Duplex, DF1 Half-Duplex master\/slave, DH-485, and ASCII protocols.\u003c\/p\u003e\n\u003cp\u003eThe module includes integrated RAM backed up by a replaceable lithium battery (Catalog Number 1747-BA), which preserves volatile program data during power loss. An internal capacitor maintains power to the RAM for at least 30 minutes during a battery swap, preventing program corruption. For permanent, non-volatile storage, the processor supports optional Flash EPROM memory modules.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e64 KB User Memory:\u003c\/strong\u003e Provides expanded capacity for complex ladder programming, data storage, and status file tracking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Speed Logic Execution:\u003c\/strong\u003e Achieves 0.37 µs bit execution time (XIC) and a program scan time of 0.9 ms\/K.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Ethernet Channel:\u003c\/strong\u003e Channel 1 features 10Base-T Ethernet TCP\/IP communication for high-speed network integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiprotocol Serial Channel:\u003c\/strong\u003e Channel 0 RS-232 port supports DF1 Full-Duplex, DF1 Half-Duplex, DH-485, and ASCII protocols.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge I\/O System Capacity:\u003c\/strong\u003e Supports up to 4096 discrete inputs and 4096 discrete outputs across a 3-chassis local system (up to 30 total slots).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagnostic Status LEDs:\u003c\/strong\u003e Front-panel LEDs provide clear status indication for Power, Run, Fault (FLT), Battery (BATT), Force, Ethernet (ENET), and RS232 channels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e30-Minute Backup Capacitor:\u003c\/strong\u003e Keeps RAM energized for at least 30 minutes during battery maintenance without loss of system data.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomated Assembly \u0026amp; Material Handling:\u003c\/strong\u003e Manages multi-axis sequencing, conveyor lines, and high-speed data transfer to supervisory systems over Ethernet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProcess Control Systems:\u003c\/strong\u003e Handles discrete and analog loops across multiple chassis setups with up to 4,096 discrete I\/O points.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote Monitoring \u0026amp; Control:\u003c\/strong\u003e Utilizes standard TCP\/IP networking to communicate with plant-wide SCADA and HMI platforms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLegacy System Upgrades:\u003c\/strong\u003e Replaces smaller 16 KB or 32 KB SLC 5\/05 processors (such as 1747-L551 or 1747-L552) to expand ladder program capacity without hardware re-engineering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical 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\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley \/ Rockwell Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Identifier\u003c\/td\u003e\n\u003ctd\u003e1747-L553\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Family\u003c\/td\u003e\n\u003ctd\u003eSLC 500 \/ 1746 System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessor Type\u003c\/td\u003e\n\u003ctd\u003eSLC 5\/05 Controller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Memory\u003c\/td\u003e\n\u003ctd\u003e64K Words \/ 64 KB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Discrete I\/O\u003c\/td\u003e\n\u003ctd\u003e4096 Inputs \/ 4096 Outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Local System Expansion\u003c\/td\u003e\n\u003ctd\u003e3 Chassis \/ 30 Slots\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBit Execution Time (XIC)\u003c\/td\u003e\n\u003ctd\u003e0.37 µs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Program Scan Time\u003c\/td\u003e\n\u003ctd\u003e0.9 ms per K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current at 5V DC\u003c\/td\u003e\n\u003ctd\u003e1.0 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current at 24V DC\u003c\/td\u003e\n\u003ctd\u003e0 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel 1 Communication\u003c\/td\u003e\n\u003ctd\u003eEthernet TCP\/IP (10Base-T)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel 0 Communication\u003c\/td\u003e\n\u003ctd\u003eRS-232 (DF1 Full-Duplex, DF1 Half-Duplex, DH-485, ASCII)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNetwork Addressing\u003c\/td\u003e\n\u003ctd\u003eIP address set via RS-232 connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProgramming Software\u003c\/td\u003e\n\u003ctd\u003eRSLogix 500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory Backup Option\u003c\/td\u003e\n\u003ctd\u003eReplaceable Lithium Battery (1747-BA); Optional Flash EPROM (1747-M11, 1747-M12, 1747-M13)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory Retention (Without Battery)\u003c\/td\u003e\n\u003ctd\u003eMinimum 30 minutes via internal capacitor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProgram Scan Hold-up Time\u003c\/td\u003e\n\u003ctd\u003e20 ms to 3 s (power supply loading dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to +60 degC (+32 to +140 degF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to +85 degC (-40 to +185 degF)\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\u003eVibration Resistance\u003c\/td\u003e\n\u003ctd\u003e0.015 in peak-to-peak displacement at 5-57 Hz; 2.5Gs acceleration at 57-2000 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Shock\u003c\/td\u003e\n\u003ctd\u003e30Gs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise Immunity\u003c\/td\u003e\n\u003ctd\u003eNEMA Standard ICS 2-230\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eSingapore\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eConnections \/ Interfaces\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eInterface Port\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eCable \/ Connector Requirement\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSupported Protocols \/ Function\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel 1 (Ethernet)\u003c\/td\u003e\n\u003ctd\u003e10Base-T Cable via RJ45 \/ Hub\u003c\/td\u003e\n\u003ctd\u003eEthernet TCP\/IP high-speed network communication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel 0 (Serial)\u003c\/td\u003e\n\u003ctd\u003e1747-CP3 Cable or 1784-PCMK \/ KTX Card\u003c\/td\u003e\n\u003ctd\u003eRS-232: DF1 Full-Duplex (19.2K baud default), DF1 Half-Duplex, DH-485, ASCII\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Verification:\u003c\/strong\u003e Ensure power to the 1746 chassis power supply is completely switched OFF before inserting or removing the processor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrostatic Precautions:\u003c\/strong\u003e Handle the controller by its plastic housing to avoid static discharge, which can damage onboard electronics or clear RAM memory.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Insertion:\u003c\/strong\u003e Slide the processor into \u003cstrong\u003eSlot 0\u003c\/strong\u003e (the far-left slot) of the 1746 chassis until the top and bottom retainer clips snap securely in place.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtective Wrap:\u003c\/strong\u003e Remove the protective shipping wrap from the module housing after physical installation into the chassis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower-On Verification:\u003c\/strong\u003e Turn on the chassis power supply (1746-P1 through 1746-P7 series). Confirm that the power supply POWER LED illuminates and the controller FLT (Fault) LED flashes initially.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eConfiguration and Maintenance Guidelines\u003c\/h3\u003e\n\u003ch4\u003eInitial Network Configuration\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eConnect a 1747-CP3 serial cable between Channel 0 of the processor and your computer's COM port.\u003c\/li\u003e\n\u003cli\u003eOpen RSLogix 500 and configure DF1 Full-Duplex serial driver defaults (19.2K baud, no parity, CRC error check).\u003c\/li\u003e\n\u003cli\u003eAssign the required static IP address, subnet mask, and gateway settings to Channel 1 (Ethernet) over the RS-232 serial connection.\u003c\/li\u003e\n\u003cli\u003eConnect Channel 1 to your 10Base-T Ethernet network hub or switch to enable high-speed ladder upload\/download and network messaging.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch4\u003eBattery Maintenance\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Battery Warning:\u003c\/strong\u003e Replace the lithium battery (Cat. No. 1747-BA) when the red \u003cstrong\u003eBATT\u003c\/strong\u003e LED illuminates on the front panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRAM Backup Hold Time:\u003c\/strong\u003e An onboard capacitor holds memory intact for at least 30 minutes after the battery is disconnected.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement Procedure:\u003c\/strong\u003e Turn off power, release the chassis clips, slide out the processor, unplug the old battery connector from its socket, clip the new 1747-BA battery in place, plug in the connector, and re-install the processor in slot 0.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompliance and Certifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUL Listed\u003c\/li\u003e\n\u003cli\u003eCSA Approved\u003c\/li\u003e\n\u003cli\u003eClass 1, Groups A, B, C, or D, Division 2 Hazardous Locations\u003c\/li\u003e\n\u003cli\u003eCE Compliant (all applicable directives)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":53723865416043,"sku":"1747-L553","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/1747-L553_001_1200x1200_230f98f6-1b7b-4655-88fe-6847aa82eab4.jpg?v=1786710455","url":"https:\/\/www.plcprotech.com\/it\/products\/allen-bradley-1747-l553-slc-5-05-controller-64k-memory","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}