{"product_id":"allen-bradley-1756-m12-controllogix-memory-expansion-board","title":"Allen-Bradley 1756-M12 ControlLogix Memory Expansion Board","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\u003cp\u003eThe 1756-M12 is a nonvolatile memory expansion board designed specifically for the legacy Allen-Bradley ControlLogix 5555 processor series. This Series A module provides 750 KB of additional nonvolatile storage, allowing for the retention of critical instruction logic, system configurations, and machine parameters without reliance on battery backup or continuous backplane power. It is engineered to integrate directly into the internal circuit assembly of the host processor, providing a reliable solution for safeguarding project files in industrial automation environments.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eProvides 750 KB of nonvolatile memory expansion.\u003c\/li\u003e\n\u003cli\u003eDesigned for seamless integration with ControlLogix 5555 series processors.\u003c\/li\u003e\n\u003cli\u003eEliminates the need for battery-backed RAM for critical project data retention.\u003c\/li\u003e\n\u003cli\u003eCompact daughterboard architecture for internal installation.\u003c\/li\u003e\n\u003cli\u003eMaintains data integrity for coordinated assembly and process looping applications.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis memory expansion board is primarily utilized in legacy ControlLogix 5555 systems to extend storage capacity for complex control programs, ensuring that logic and configuration data remain secure during power cycles or system maintenance in manufacturing and process control facilities.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1756-M12\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\u003eMemory Capacity\u003c\/td\u003e\n\u003ctd\u003e750 kB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory Type\u003c\/td\u003e\n\u003ctd\u003eNonvolatile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eControlLogix 5555 Processor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 60 degC (32 to 140 degF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to 85 degC (-40 to 185 degF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e5% to 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Altitude\u003c\/td\u003e\n\u003ctd\u003eUp to 1000 meters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the host ControlLogix 5555 processor is powered down and removed from the chassis before attempting to install the memory board.\u003c\/li\u003e\n\u003cli\u003eHandle the module using proper ESD (Electrostatic Discharge) precautions to prevent damage to sensitive internal components.\u003c\/li\u003e\n\u003cli\u003eCarefully align the board with the designated internal connector on the host processor's main logic assembly and press firmly until seated.\u003c\/li\u003e\n\u003cli\u003eVerify that the module is securely attached before re-inserting the processor into the ControlLogix chassis.\u003c\/li\u003e\n\u003cli\u003eEnsure the environment remains within the specified temperature and humidity ranges to prevent condensation or thermal stress on the board components.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eDoes this module require a battery?\u003c\/h3\u003e\u003cp\u003eNo, the 1756-M12 is a nonvolatile memory expansion board, meaning it retains data without the need for battery backup or continuous power.\u003c\/p\u003e\u003ch3\u003eIs this compatible with newer ControlLogix processors?\u003c\/h3\u003e\u003cp\u003eThe 1756-M12 is specifically engineered for the legacy ControlLogix 5555 processor series. It is not intended for use with newer ControlLogix 5560, 5570, or 5580 series controllers.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":50991118778620,"sku":"1756-M12","price":56.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_51e6ff9e-1fca-4d7f-9015-1facb61a3003.jpg?v=1786988462","url":"https:\/\/www.electronicplc.com\/products\/allen-bradley-1756-m12-controllogix-memory-expansion-board","provider":"Electronic PLC","version":"1.0","type":"link"}