{"product_id":"allen-bradley-1785-l30b-e-plc-5-30-processor-module","title":"Allen-Bradley 1785-L30B\/E PLC-5\/30 Processor Module","description":"\u003ch2\u003eAllen-Bradley 1785-L30B\/E PLC-5\/30 Processor Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for PLC execution and I\/O coordination in PLC-5 control systems, the \u003cstrong\u003eAllen-Bradley 1785-L30B\/E\u003c\/strong\u003e (\u003cstrong\u003e1785-L30B\u003c\/strong\u003e PLC-5\/30 Processor Module) provides direct processing and communication functions through 1771 I\/O chassis platforms. The module handles user program execution, Remote I\/O scanning, and DH+ network communication.\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\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\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\u003eAllen-Bradley 1785-L30B\/E\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.73 lbs\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\u003eBackplane current draw: 1.0 A @ 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessor Type\u003c\/td\u003e\n\u003ctd\u003ePLC-5\/30 Standard Processor, Series E\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Memory\u003c\/td\u003e\n\u003ctd\u003e3K words battery-backed memory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Ports\u003c\/td\u003e\n\u003ctd\u003e1 x DH+, 1 x RS-232 serial, 1 x Remote I\/O scanner\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum I\/O Capacity\u003c\/td\u003e\n\u003ctd\u003e1536 points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChassis Compatibility\u003c\/td\u003e\n\u003ctd\u003e1771 I\/O chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI\/O Scan Time\u003c\/td\u003e\n\u003ctd\u003e10 ms per rack @ 57.6 kbps, 7 ms @ 115.2 kbps, 3 ms @ 230.4 kbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory Retention\u003c\/td\u003e\n\u003ctd\u003eLithium battery-backed program retention\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStatus Indicators\u003c\/td\u003e\n\u003ctd\u003ePower, fault, and communication LEDs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL, CE, CSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003ePLC-5 Communication and Control Architecture\u003c\/h3\u003e\n\u003cp\u003eThe 1785-L30B\/E processor supports PLC-5 system communication through DH+ network connectivity, RS-232 serial communication, and Remote I\/O scanner operation. The processor exchanges control data with 1771 I\/O modules through the chassis backplane and manages distributed I\/O devices through Remote I\/O communication.\u003c\/p\u003e\n\u003cp\u003eThe PLC-5 architecture uses deterministic scan execution with configurable communication rates. The processor performs logic execution, diagnostics processing, and I\/O updates according to the configured controller program and rack addressing structure.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003eQ: What type of I\/O chassis does the 1785-L30B\/E processor require?\u003cbr\u003eA: The module is designed for installation in Allen-Bradley 1771 I\/O chassis systems and communicates with installed I\/O modules through the chassis backplane.\u003c\/p\u003e\n\u003cp\u003eQ: Which communication interfaces are available on the 1785-L30B\/E?\u003cbr\u003eA: The processor provides DH+, RS-232 serial communication, and Remote I\/O scanner functionality for PLC-5 network configurations.\u003c\/p\u003e\n\u003cp\u003eQ: How is user program memory maintained during power loss?\u003cbr\u003eA: The processor uses battery-backed memory retention with a lithium battery to preserve stored application programs.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1785-L30B\/E processor in a compatible 1771 chassis slot with the chassis power removed before module insertion or removal. Verify backplane connections are fully seated and inspect the edge connector for contamination or mechanical damage.\u003c\/p\u003e\n\u003cp\u003eRoute communication cables separately from high-voltage power conductors to reduce electrical interference. Apply proper cable shielding and grounding practices according to the installed DH+, RS-232, and Remote I\/O network requirements.\u003c\/p\u003e\n\u003cp\u003eBefore system startup, confirm processor status LEDs, communication wiring, rack addressing, and controller configuration parameters. Maintain battery condition to prevent loss of retained application memory.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43739335491674,"sku":"1785-L30B\/E","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1785-L30BE1.jpg?v=1785139971","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1785-l30b-e-plc-5-30-processor-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}