{"product_id":"1769-l31-allen-bradley-compactlogix-1-5mb-512kb-cpu-processor","title":"1769-L31 Allen-Bradley CompactLogix 1.5MB 512KB CPU Processor","description":"\u003ch2\u003eAllen-Bradley 1769-L31 CompactLogix Controller\u003c\/h2\u003e\n\u003cp\u003eConfigured for discrete, process, and motion execution paths in small to mid-range automation systems, the \u003cstrong\u003eAllen-Bradley 1769-L31\u003c\/strong\u003e (\u003cstrong\u003e1769-L31\u003c\/strong\u003e CompactLogix Controller) provides direct physical\/electrical execution.\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\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1769-L31\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley \/ Rockwell Automation\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\u003e0.80 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e132.00 mm x 50.00 mm x 122.00 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e4.0 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Memory\u003c\/td\u003e\n\u003ctd\u003e512 KB \/ 1.5 MB platform variant limits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI\/O Capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 16 local 1769 I\/O modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Ports\u003c\/td\u003e\n\u003ctd\u003e2 x RS-232 serial ports (DF1, ASCII, Modbus RTU protocols)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExpansion Capabilities\u003c\/td\u003e\n\u003ctd\u003eSupports network modules (EtherNet\/IP, ControlNet, DeviceNet)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotion Control\u003c\/td\u003e\n\u003ctd\u003eUp to 4 axes via external SERCOS interface modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current Load\u003c\/td\u003e\n\u003ctd\u003e800 mA at 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temp\u003c\/td\u003e\n\u003ctd\u003e-40 deg C to +85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e5% to 95% RH, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Software\u003c\/td\u003e\n\u003ctd\u003eRSLogix 5000 \/ Studio 5000 Logix Designer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eEtherNet\/IP Deterministic Networks and Firmware Flash Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe 1769-L31 processor governs localized industrial operations through its internal backplane bus, demanding strict firmware flash compatibility verification with RSLogix 5000 or Studio 5000 environments to prevent system faults during runtime logic execution. Although native serial ports drive point-to-point DF1 interfaces, integration into EtherNet\/IP deterministic networks requires adding network-specific communication modules to the local chassis structure. System engineering rules dictate precise calculation of the 800 mA backplane current draw against the power supply limits when scaling the local system architecture up to its maximum 16-module I\/O density threshold.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1769-L31 unit allow live insertion or hot-swapping of adjacent local expansion modules while active?\u003c\/p\u003e\n\u003cp\u003eA: No. The internal 1769 backplane architecture does not accommodate Online Insertion and Removal (RIUP). Users must entirely de-energize the master system power supply prior to adding, removing, or replacing any modules to avoid physical circuit damage or data corruption.\u003c\/p\u003e\n\u003cp\u003eQ: How should engineers deploy network redundancies when connecting this serial controller to higher-level networks?\u003c\/p\u003e\n\u003cp\u003eA: Because the 1769-L31 relies on built-in RS-232 interfaces, network redundancy can only be achieved by mounting a separate EtherNet\/IP or ControlNet scanner module onto the local chassis bus, configuring the dual communication channels within the control software architecture.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Attachment:\u003c\/strong\u003e Fit the module securely onto an industrial 35 mm DIN rail or fasten it directly onto a grounded metallic control backpanel. Slide the internal bus latches horizontally into the adjacent slot interfaces to complete the structural and electrical circuit connection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding Requirements:\u003c\/strong\u003e Run a low-impedance copper grounding conductor from the functional earth terminal directly to the central panel enclosure ground bus bar to protect internal microprocessor logic from electrical transients.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerial Wiring Constraints:\u003c\/strong\u003e Utilize shielded serial communication cables for all RS-232 runs. Ensure these signal lines follow routing paths segregated from high-voltage AC motor lines to eliminate external electromagnetic interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Management Envelope:\u003c\/strong\u003e Maintain a physical clear space measuring no less than 50 mm above, below, and to the sides of the hardware cluster to promote steady convective airflow and keep operating temperatures inside the specified 60 deg C ceiling.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":44418376171619,"sku":"1769-L31","price":310.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/211._7a068d48-241a-4f8f-8b4e-026490c471cd.jpg?v=1785310460","url":"https:\/\/www.autocontrolglobal.com\/products\/1769-l31-allen-bradley-compactlogix-1-5mb-512kb-cpu-processor","provider":"AutoControl Global","version":"1.0","type":"link"}