{"product_id":"allen-bradley-1785-l80b-plc-5-80-processor-module","title":"Allen-Bradley 1785-L80B PLC-5\/80 Processor Module","description":"\u003ch2\u003eAllen-Bradley 1785-L80B PLC-5\/80 Processor Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1785-L80B\u003c\/strong\u003e serves as the primary \u003cstrong\u003e1785-L80B\u003c\/strong\u003e PLC-5\/80 Processor Module utilized to execute programmable control processing and high-density I\/O communication tasks across PLC-5 DH+ \/ Remote I\/O platforms. The processor provides 100 Kilowords of battery-backed SRAM, multi-channel communication interfaces, and PLC-5 chassis management functions.\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\u003e1785-L80B\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\u003e3.00 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e12 W power dissipation; 2.3 A backplane current draw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003ePLC-5\/80 Processor Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003ePLC-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessor\u003c\/td\u003e\n\u003ctd\u003ePLC-5\/80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Memory\u003c\/td\u003e\n\u003ctd\u003e100 Kilowords battery-backed static RAM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory Expansion\u003c\/td\u003e\n\u003ctd\u003eSupports 1785-ME16, 1785-ME32, and 1785-ME64 modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEEPROM Program Backup\u003c\/td\u003e\n\u003ctd\u003eSupported using 1785-ME16, 1785-ME32, 1785-ME64, and 1785-M100 modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtected Memory\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Total I\/O\u003c\/td\u003e\n\u003ctd\u003e3072 points any mix or 3072 inputs + 3072 outputs complementary\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Analog I\/O\u003c\/td\u003e\n\u003ctd\u003e3072\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum I\/O Chassis Total\u003c\/td\u003e\n\u003ctd\u003e93\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum I\/O Racks\u003c\/td\u003e\n\u003ctd\u003e32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUniversal Remote I\/O Chassis\u003c\/td\u003e\n\u003ctd\u003e32 maximum per I\/O link\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Ports\u003c\/td\u003e\n\u003ctd\u003e4 x DH+\/Remote I\/O (Adapter or Scanner), 1 x serial port, 2 x programming terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSerial Port Compatibility\u003c\/td\u003e\n\u003ctd\u003eRS-232, RS-422A, RS-423\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Protocols\u003c\/td\u003e\n\u003ctd\u003eDF1, ASCII, Data Highway Plus (DH+), Remote I\/O (RIO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eController Redundancy\u003c\/td\u003e\n\u003ctd\u003eSupported\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\u003eControl Coprocessor Expansion Port\u003c\/td\u003e\n\u003ctd\u003eSupported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI\/O Scan Time Per Rack\u003c\/td\u003e\n\u003ctd\u003e10 ms at 57.6 kbits\/s, 7 ms at 115.2 kbits\/s, 3 ms at 230.4 kbits\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eI\/O Density Scaling and PLC-5 Communication Architecture\u003c\/h3\u003e\n\u003cp\u003eThe 1785-L80B processor provides PLC-5 architecture functions for deterministic control execution through DH+ and Remote I\/O communication channels. The processor supports I\/O density scaling with up to 3072 I\/O points and distributed rack configurations using universal Remote I\/O links.\u003c\/p\u003e\n\u003cp\u003eThe processor manages multiple communication paths through four DH+\/Remote I\/O channels configured for adapter or scanner operation. The PLC-5 platform supports firmware-compatible memory expansion and EEPROM backup functions for program transfer and retention. Controller redundancy capability allows coordinated processor configurations where supported by the system design.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the maximum user memory capacity of the 1785-L80B processor?\u003cbr\u003eA: The processor provides up to 100 Kilowords of battery-backed static RAM user memory.\u003c\/p\u003e\n\u003cp\u003eQ: How many communication channels are integrated into the 1785-L80B?\u003cbr\u003eA: The processor includes four DH+\/Remote I\/O channels, one configurable serial port supporting RS-232, RS-422A, and RS-423, and two programming terminal connections.\u003c\/p\u003e\n\u003cp\u003eQ: Does the 1785-L80B support PLC-5 redundancy configurations?\u003cbr\u003eA: Yes. Controller redundancy support is provided for compatible PLC-5 system architectures.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1785-L80B processor module in the designated PLC-5 chassis slot with chassis power removed during installation or removal. Verify that the rack configuration, processor addressing, and memory modules match the application requirements.\u003c\/p\u003e\n\u003cp\u003eRoute DH+, Remote I\/O, and serial communication cables separately from power conductors and high-current switching circuits. Use appropriate cable shielding and grounding methods according to industrial control wiring practices.\u003c\/p\u003e\n\u003cp\u003eBefore operation, verify processor status indicators, battery condition, communication configuration, I\/O rack addressing, and application memory integrity. Confirm that all connected 1771 I\/O modules correspond with the configured PLC-5 program structure.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43739355676762,"sku":"1785-L80B","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1785-L80B2.jpg?v=1785141697","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1785-l80b-plc-5-80-processor-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}