{"product_id":"1785-mj-allen-bradley-8k-eeprom-memory-module","title":"1785-MJ | Allen-Bradley | 8K EEPROM Memory Module","description":"\u003ch3\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1785-MJ\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis an 8K-word EEPROM memory module designed for use with PLC-2 and PLC-5 family processors. It enables reliable program storage and retention without requiring battery backup, ensuring data integrity even during power loss. Built with a removable jumper for write protection, this module is ideal for maintaining critical control logic in demanding industrial automation environments.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAllen-Bradley\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eModel Number:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1785-MJ\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Type:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEEPROM Memory Module\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMemory Capacity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e8K words\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible Processors:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1772-LW, 1772-LWP, 1785-LT, 1785-LT2, 1785-LT3, 1785-LT4\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWrite Protection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEnabled via removable jumper\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRIUP Capability:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eNot supported (module must be installed\/deinstalled with power off)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e0 to 60°C (32 to 140°F)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStorage Temperature:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e-40 to 85°C (-40 to 185°F)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRelative Humidity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e5–95% non-condensing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e55.4 × 43.9 × 17.4 mm (2.18 × 1.73 × 0.69 in)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e0.03 kg (0.06 lb)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBackplane Requirement:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e5 VDC from system power budget\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eApplication Scenarios\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe 1785-MJ module is suited for PLC-based systems where permanent program retention is critical. Typical use cases include:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eFactory automation and process control systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePower generation and distribution control\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBatch processing systems requiring reliable restart capability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLegacy PLC-2 and PLC-5 system maintenance or upgrades\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eComparison with Similar Models\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e1785-MJ:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e8K EEPROM module for PLC-5 processors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e1785-ME16:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e16K EPROM variant offering expanded capacity\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e1785-MJ2:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eNewer EEPROM model with higher storage and improved access time\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFAQs\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: Does the 1785-MJ retain data without external power?\u003c\/strong\u003e\u003cbr\u003eA1: Yes, as an EEPROM device, it maintains stored data even when power is removed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Can this module be written to directly from the PLC processor?\u003c\/strong\u003e\u003cbr\u003eA2: Yes, programming can be transferred from the PLC memory to the EEPROM using standard write procedures.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: Is the 1785-MJ backward compatible with older PLC-2 processors?\u003c\/strong\u003e\u003cbr\u003eA3: It is compatible with select PLC-2 and PLC-5 processor models listed in the specifications.\u003c\/p\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":52829276045496,"sku":"1785-MJ","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/1785-MJ.jpg?v=1770801972","url":"https:\/\/www.globalpetroparts.com\/products\/1785-mj-allen-bradley-8k-eeprom-memory-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}