{"product_id":"1771-dmc-allen-bradley-plc-5-control-coprocessor-main-module","title":"1771-DMC Allen-Bradley PLC-5 Control Coprocessor Main Module","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1771-DMC\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1771-DMC\u003c\/strong\u003e Control Coprocessor Main Module, operates as a dedicated hardware component for auxiliary processing and application data management within PLC-5 controller systems.\u003c\/p\u003e\n\u003ch3\u003eModel Identification \u0026amp; Module Configuration\u003c\/h3\u003e\n\u003cp\u003eThe 1771-DMC is a PLC-5 Control Coprocessor Main Module designed to extend processing capability within Allen-Bradley PLC-5 chassis architectures. The module provides additional memory resources and coprocessor functions while operating alongside the main PLC processor.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure\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\u003e1771-DMC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpare Model\u003c\/td\u003e\n\u003ctd\u003e1771DMC, 1771-DMC\/A\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\u003eControl Coprocessor Modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003ePLC-5\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\u003e1 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e3 x 16.5 x 17.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory Capacity\u003c\/td\u003e\n\u003ctd\u003e256 KB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Function\u003c\/td\u003e\n\u003ctd\u003eControl Coprocessor Processing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Status\u003c\/td\u003e\n\u003ctd\u003eDiscontinued by manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlatform Compatibility\u003c\/td\u003e\n\u003ctd\u003ePLC-5 Controller System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003ePLC-5 Backplane Communication Architecture\u003c\/h3\u003e\n\u003cp\u003eThe 1771-DMC operates as a PLC-5 chassis module and communicates with the controller system through the 1771 I\/O backplane structure. The coprocessor architecture allows additional processing functions to be executed separately from the main PLC processor workload.\u003c\/p\u003e\n\u003cp\u003eThe module follows Allen-Bradley PLC-5 system architecture requirements, including chassis addressing, module configuration, and firmware compatibility management. Existing PLC-5 installations require verification of processor revision and system configuration before replacement.\u003c\/p\u003e\n\u003ch3\u003eControl Coprocessor Processing Function\u003c\/h3\u003e\n\u003cp\u003eThe 1771-DMC provides dedicated coprocessor resources for PLC-5 applications requiring additional processing capability. The integrated 256 KB memory capacity supports application-related data handling and coprocessor operations.\u003c\/p\u003e\n\u003cp\u003eThe module is configured as part of a PLC-5 control system and does not operate as an independent programmable controller. Proper application configuration is required to coordinate data exchange between the main processor and coprocessor module.\u003c\/p\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Allen-Bradley 1771-DMC PLC-5 Control Coprocessor Main Module\u003c\/li\u003e\n\u003cli\u003e1 x Module identification label\u003c\/li\u003e\n\u003cli\u003e1 x Product documentation package\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003ch4\u003eModule Installation\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVerify PLC-5 chassis compatibility before installation.\u003c\/li\u003e\n\u003cli\u003eRemove chassis power before inserting or removing the module.\u003c\/li\u003e\n\u003cli\u003eConfirm module slot position and addressing configuration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eElectrical and System Checks\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eInspect the backplane connector before installation.\u003c\/li\u003e\n\u003cli\u003eEnsure the chassis power supply capacity is suitable for installed modules.\u003c\/li\u003e\n\u003cli\u003eMaintain proper grounding practices to reduce electrical interference.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eConfiguration Maintenance\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm processor and coprocessor communication settings after installation.\u003c\/li\u003e\n\u003cli\u003eVerify application program compatibility before transferring data.\u003c\/li\u003e\n\u003cli\u003eKeep backup copies of PLC-5 project files before hardware replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat system is the 1771-DMC designed for?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1771-DMC is designed for Allen-Bradley PLC-5 controller systems using the 1771 chassis platform.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the primary function of this module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module provides additional coprocessor processing capability and memory resources for PLC-5 applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow much memory does the 1771-DMC provide?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module includes 256 KB memory capacity for supported coprocessor functions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan the 1771-DMC operate as a standalone controller?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The module requires integration with a compatible PLC-5 processor system.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the module communicate through the PLC backplane?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The module exchanges data through the 1771 chassis backplane communication structure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs firmware compatibility required before installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. Existing PLC-5 processor revision and system configuration should be checked before replacement.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan the module be removed while powered?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePower removal is recommended before module installation or removal to prevent hardware faults.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat maintenance checks are required after installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eVerify module recognition, communication status, and application operation after installation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066443026605,"sku":"1771-DMC","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/1771-DMC-0.jpg?v=1786454031","url":"https:\/\/www.maxwellplc.com\/ru\/products\/1771-dmc-allen-bradley-plc-5-control-coprocessor-main-module","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}