{"product_id":"allen-bradley-1785-l30b-plc-5-30-processor-controller","title":"Allen-Bradley 1785-L30B PLC-5\/30 Processor Controller","description":"\u003ch3\u003e\u003cstrong\u003eProduct Description\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1785-L30B\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprocessor module from\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003eAllen-Bradley\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eis a PLC-5\/30 programmable controller designed for medium to large-scale industrial automation systems requiring reliable discrete and analog I\/O management. As part of the PLC-5 family, this controller combines integrated communication capability, expandable remote I\/O architecture, and battery-backed memory retention for continuous process control applications.\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1785-L30B\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esupports up to 32K words of user memory and accommodates high-capacity I\/O configurations across local and remote chassis installations. Integrated communication interfaces include dual DH+\/Remote I\/O channels and a configurable serial communication port supporting RS-232, RS-422A, and RS-423 standards.\u003c\/p\u003e\n\u003cp\u003eThis processor is commonly deployed in manufacturing lines, process plants, utility systems, and legacy PLC-5 automation upgrades where dependable controller performance and broad network compatibility are required.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eDetails\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1785-L30B\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessor Series\u003c\/td\u003e\n\u003ctd\u003ePLC-5\/30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eProgrammable Logic Controller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessor Category\u003c\/td\u003e\n\u003ctd\u003eStandard Processor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Memory Capacity\u003c\/td\u003e\n\u003ctd\u003e32K words SRAM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory Retention\u003c\/td\u003e\n\u003ctd\u003eBattery-backed static RAM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEEPROM Backup Support\u003c\/td\u003e\n\u003ctd\u003e1785-ME16, 1785-ME32, 1785-ME64, 1785-M100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Total I\/O\u003c\/td\u003e\n\u003ctd\u003e1024 any mix or 1024 inputs + 1024 outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Analog I\/O\u003c\/td\u003e\n\u003ctd\u003e1024 points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEmbedded Communication Ports\u003c\/td\u003e\n\u003ctd\u003e2 DH+\/Remote I\/O channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSerial Communication\u003c\/td\u003e\n\u003ctd\u003e1 configurable RS-232\/RS-422A\/RS-423 port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRemote I\/O Chassis Support\u003c\/td\u003e\n\u003ctd\u003eUp to 12 chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Total I\/O Chassis\u003c\/td\u003e\n\u003ctd\u003e29 chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUniversal Remote I\/O Chassis\u003c\/td\u003e\n\u003ctd\u003e28\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExtended Local Chassis\u003c\/td\u003e\n\u003ctd\u003e0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum I\/O Racks\u003c\/td\u003e\n\u003ctd\u003e4 racks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI\/O Scan Time\u003c\/td\u003e\n\u003ctd\u003e10 ms at 57.6 kbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFaster I\/O Scan Rates\u003c\/td\u003e\n\u003ctd\u003e7 ms at 115.2 kbps, 3 ms at 230.4 kbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current Requirement\u003c\/td\u003e\n\u003ctd\u003e2.3 A at 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Power Dissipation\u003c\/td\u003e\n\u003ctd\u003e12 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Power Supplies\u003c\/td\u003e\n\u003ctd\u003e1771-P4S, 1771-P6S, 1771-P4S1, 1771-P6S1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Type\u003c\/td\u003e\n\u003ctd\u003e1770-XYC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoprocessor Expansion Port\u003c\/td\u003e\n\u003ctd\u003eSupported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0°C to 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to 85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.25 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eCommunication and System Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1785-L30B\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econtroller provides integrated industrial networking functions for PLC-5 architectures requiring communication with distributed I\/O systems, HMIs, and supervisory networks.\u003c\/p\u003e\n\u003cp\u003eKey features include:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eDual DH+ and Remote I\/O communication channels\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eConfigurable serial communication interface\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSupport for large distributed I\/O installations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBattery-backed memory protection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEEPROM program backup capability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRack-based PLC-5 architecture compatibility\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh-capacity analog and discrete I\/O handling\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eExpansion support for control coprocessor modules\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1785-L30B\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprocessor is commonly installed in legacy and active PLC-5 control systems across multiple industries.\u003c\/p\u003e\n\u003cp\u003eTypical applications include:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eManufacturing automation systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaterial handling equipment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWater treatment facilities\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePackaging machinery\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProcess control systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAutomotive production lines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePlant-wide remote I\/O control\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIndustrial retrofit projects\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch4\u003e\u003cstrong\u003eHow much user memory does the 1785-L30B provide?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe controller includes 32K words of battery-backed SRAM memory.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eWhich communication interfaces are built into the processor?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe module includes two DH+\/Remote I\/O communication channels and one configurable serial communication port.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eCan the controller support remote I\/O chassis?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eYes. The processor supports up to 28 universal remote I\/O chassis within PLC-5 systems.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eDoes the processor support EEPROM backup modules?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eYes. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1785-L30B\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esupports EEPROM backup modules including the 1785-ME16, 1785-ME32, 1785-ME64, and 1785-M100.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43344916185178,"sku":"1785-L30B","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1785-L30B2.jpg?v=1778466986","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1785-l30b-plc-5-30-processor-controller","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}