{"product_id":"1785-l20c15-allen-bradley-plc-5-series-controlnet-processor-module","title":"1785-L20C15 Allen-Bradley PLC-5 Series ControlNet Processor Module","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1785-L20C15\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003ePLC-5\/20C\u003c\/strong\u003e ControlNet Processor Module, operates as a dedicated hardware component for processor execution and ControlNet communication management within PLC-5 control platforms.\u003c\/p\u003e\n\u003ch3\u003eModel Identification\u003c\/h3\u003e\n\u003cp\u003eThe 1785-L20C15 is a PLC-5\/20C processor module configured with ControlNet communication capability. It provides processor execution, memory handling, and network communication functions through the PLC-5 architecture.\u003c\/p\u003e\n\u003cp\u003eThe module contains 16K words of SRAM memory and supports connection to PLC-5 I\/O systems through the 1771 chassis backplane.\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-L20C15\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\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eControlNet Processor Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003ePLC-5 Series C\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\u003e1 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e27.9 cm x 5.1 cm x 17.8 cm\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\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\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e25 W typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory Capacity\u003c\/td\u003e\n\u003ctd\u003e16K words SRAM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Network\u003c\/td\u003e\n\u003ctd\u003eControlNet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessor Type\u003c\/td\u003e\n\u003ctd\u003ePLC-5\/20C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI\/O Addressing\u003c\/td\u003e\n\u003ctd\u003e2-slot addressing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital I\/O Support\u003c\/td\u003e\n\u003ctd\u003e16\/32-point modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog I\/O Support\u003c\/td\u003e\n\u003ctd\u003e4\/8-channel modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply Input\u003c\/td\u003e\n\u003ctd\u003e85-265V AC or 24V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e1500V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eIndustrial Control Communication Architecture\u003c\/h3\u003e\n\u003cp\u003eThe 1785-L20C15 integrates ControlNet communication functions into the PLC-5 processor platform. The module manages deterministic network communication between PLC-5 controllers, remote I\/O devices, and ControlNet connected equipment.\u003c\/p\u003e\n\u003cp\u003eAllen-Bradley PLC-5 processors use backplane bus communication for data exchange between processor memory, I\/O modules, and communication interfaces. The processor design supports modular I\/O density scaling through 1771 series chassis configurations.\u003c\/p\u003e\n\u003cp\u003eThe ControlNet interface enables scheduled and unscheduled communication traffic management within industrial control networks. Network configuration depends on the connected ControlNet devices, node settings, and controller programming environment.\u003c\/p\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Allen-Bradley 1785-L20C15 PLC-5\/20C ControlNet Processor Module\u003c\/li\u003e\n\u003cli\u003eProcessor module memory: 16K words SRAM\u003c\/li\u003e\n\u003cli\u003ePLC-5 chassis mounting hardware is not included unless specified\u003c\/li\u003e\n\u003cli\u003eProgramming cables, software, and manuals are not included unless listed separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003ch4\u003eChassis Mounting\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePower down the PLC-5 chassis before installing or removing the processor module.\u003c\/li\u003e\n\u003cli\u003eInstall the processor module into the compatible 1771 chassis slot position.\u003c\/li\u003e\n\u003cli\u003eVerify that the backplane connector is fully engaged before applying power.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eNetwork Connection\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eConnect ControlNet communication cables according to the ControlNet installation requirements.\u003c\/li\u003e\n\u003cli\u003eMaintain proper cable routing separation from high-voltage power wiring.\u003c\/li\u003e\n\u003cli\u003eVerify network node configuration before placing the processor into operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eConfiguration Requirements\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm PLC-5 processor compatibility with the installed firmware revision.\u003c\/li\u003e\n\u003cli\u003eVerify I\/O addressing configuration matches the application program.\u003c\/li\u003e\n\u003cli\u003eUse compatible PLC programming software for processor configuration and diagnostics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhat is the main function of the 1785-L20C15?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 1785-L20C15 is a PLC-5\/20C processor module that executes control programs and manages ControlNet communication functions.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDoes the 1785-L20C15 support ControlNet networks?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYes. The module is designed for PLC-5 ControlNet applications and communicates with compatible ControlNet devices.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhat memory capacity does this processor provide?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe module contains 16K words of SRAM memory for processor program and data storage.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhat PLC family uses the 1785-L20C15?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe module belongs to the Allen-Bradley PLC-5 family and operates with compatible 1771 chassis systems.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCan the module be installed while the chassis is powered?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNo. Power should be removed before installation or removal to prevent processor or backplane faults.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhat I\/O addressing method is supported?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe processor supports 2-slot addressing for compatible 1771 I\/O module configurations.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhat power supply options are specified for this module?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe PLC-5 system supports 85-265V AC or 24V DC power supply configurations according to system design.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDoes the processor support analog and digital I\/O modules?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYes. Compatible PLC-5 configurations support 16\/32-point digital modules and 4\/8-channel analog modules.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066451120301,"sku":"1785-L20C15","price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/3_e85fe7b1-a836-4a31-9bfc-c1b460d4f90f.jpg?v=1785855252","url":"https:\/\/www.maxwellplc.com\/ga\/products\/1785-l20c15-allen-bradley-plc-5-series-controlnet-processor-module","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}