{"product_id":"ge-fanuc-ic697bem761-bus-controller-expansion-module","title":"GE Fanuc IC697BEM761 Bus Controller Expansion Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong style=\"color: #0056b3;\"\u003eIC697BEM761\u003c\/strong\u003e is an authentic, industrial-grade Bus Expansion Module (often designated as a Remote\/Expansion Rack Receiver) manufactured by GE Fanuc for the legacy \u003cstrong\u003eSeries 90-70 PLC\u003c\/strong\u003e automation platform. This module is engineered to extend the local CPU's chassis backplane across multiple physical racks, facilitating high-speed, distributed I\/O control without communication lag. Outfitted with dual 37-pin D-shell sub-ports, it enables seamless upstream and downstream daisy-chaining across expanded panel layouts. With a robust chassis body weighing approximately \u003cstrong\u003e1.5 lbs (approx. 0.68 kg)\u003c\/strong\u003e, the IC697BEM761 provides a hardware-level connection that treats remote inputs and outputs as local memory bits inside the master CPU controller.\u003c\/p\u003e\n\n\u003ch3\u003eCore Technical Advantages\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Density System Scalability:\u003c\/strong\u003e Empowers industrial networks to scale up to 8 physical expansion racks per direction. At a maximum allocation of 256 points per rack, this yields a total capacity of up to 2,048 discrete I\/O points managed smoothly through a single interface node.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-In Signal Integrity Features:\u003c\/strong\u003e Incorporates factory-installed, integrated backplane termination resistors. This eliminates the need for external dangling resistors and prevents high-frequency data reflection or signal attenuation across extended parallel cables.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstantaneous Localized Diagnostics:\u003c\/strong\u003e Features a dedicated three-LED front display array (RACK, MODULE, I\/O CHAIN) that isolates physical layer issues in real time, allowing technicians to distinguish between card hardware failures and cable breaks instantly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n  \u003cthead\u003e\n    \u003ctr style=\"background-color: #f2f2f2;\"\u003e\n      \u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eParameter Attribute\u003c\/th\u003e\n      \u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eFactory Specification Data\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eBrand \/ Manufacturer\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eGE Fanuc Automation (Rockwell\/Emerson Legacy)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eProduct Model \/ SKU\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eIC697BEM761 (BEM761 Series)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eModule Functional Classification\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eBus Expansion Module \/ Rack Expansion Receiver\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eBackplane Current Consumption\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e1.3 Amperes maximum at 5V DC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003ePhysical Interconnect Interface\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eTwo (2) 37-Pin parallel ports (Upstream Input \/ Downstream Output)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eMaximum Multi-Rack Deployment\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eUp to 8 expansion racks maximum per subsystem chain\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eI\/O Point Capacity Per Rack Slot\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eSelectable: 128 Points or 256 Points maximum per rack\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eTotal Comprehensive Scalability\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e2048 Inputs \/ 2048 Outputs maximum per system direction\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eNet Module Weight\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eApprox. 1.5 lbs (0.68 kg)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eStatus Diagnostics\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e3 LED Lamps: RACK Fault, MODULE Error, I\/O CHAIN Open\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eSystem Architecture Target\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eSeries 90-70 VME Chassis (IC697 base)\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eInstallation \u0026amp; Multi-Rack Wiring Guide\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChassis Slot Allocation:\u003c\/strong\u003e The IC697BEM761 module must be installed in the designated expansion slot of a Series 90-70 expansion rack. Always switch off all system power supplies before seating or unseating the module from the backplane connectors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDaisy-Chaining Configuration:\u003c\/strong\u003e Connect the high-speed expansion cable originating from the master transmitter rack (IC697BEM713 or equivalent) to the upstream 37-pin port. If wiring additional racks further down the chain, connect a subsequent expansion cable from the downstream 37-pin port to the next remote node.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSetting Rack Reference Points:\u003c\/strong\u003e Ensure that internal jumper links or software configuration tools match the specific rack size choice (128 vs 256 bits). Overlapping address spaces will result in a bus configuration conflict, triggering the front-panel error LEDs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eEngineering Protection \u0026amp; Diagnostic Matrix\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRACK Fault Status Indicator:\u003c\/strong\u003e When lit, this red indicator alerts maintenance teams to a critical, hardware-level fault detected within that specific expansion chassis frame (such as power supply sag or slot failures).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMODULE Internal Check Indicator:\u003c\/strong\u003e A solid red light indicates that the module's onboard micro-controller has failed its self-test routine or encountered a fatal logic error, requiring a hardware swap.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eI\/O CHAIN Communications Indicator:\u003c\/strong\u003e Flashes or turns solid during downstream communication timeouts, broken 37-pin cable lines, or un-terminated endpoints along the multi-rack link.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical FAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: What does the \"761\" suffix indicate compared to older version extensions?\u003c\/strong\u003e\u003cbr\u003e\nA1: The \"761\" suffix denotes a specific hardware and firmware revision that features enhanced on-board diagnostic routines, broader multi-rack stability profiles, and optimized timing logic designed to match high-speed VME processing cycles.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ2: Is a dedicated external power supply required to run the IC697BEM761?\u003c\/strong\u003e\u003cbr\u003e\nA2: No. The expansion module draws its required 1.3 Amp operating current directly from the Series 90-70 chassis backplane 5V DC rail. Ensure that the rack's power supply module (e.g., IC697PWR711 or equivalent) has sufficient headroom to accommodate this load alongside your standard I\/O cards.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ3: Can I unplug the 37-pin expansion cables while the PLC system is actively executing code?\u003c\/strong\u003e\u003cbr\u003e\nA3: Absolutely not. Disconnecting an active parallel expansion bus cable disrupts backplane communication and can cause inductive voltage spikes. This will immediately trigger a fatal CPU fault, stop the PLC, and may damage the sensitive line driver circuits inside the module ports.\u003c\/p\u003e","brand":"General Electric","offers":[{"title":"Default Title","offer_id":51050821222532,"sku":"IC697BEM761","price":119.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/7454\/7844\/files\/IC697BEM761.jpg?v=1781103667","url":"https:\/\/www.etowonauto.com\/products\/ge-fanuc-ic697bem761-bus-controller-expansion-module","provider":"Etowon Auto","version":"1.0","type":"link"}