{"product_id":"emerson-396879-01-2-central-processing-unit","title":"Emerson 396879-01-2 Central Processing Unit","description":"\u003ch2\u003eEmerson 396879-01-2 Central Processing Unit\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eEmerson 396879-01-2\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e396879\u003c\/strong\u003e CPU Module, serves as the primary processing unit for Emerson ControlWave and Bristol Babcock RTU architectures, executing system logic and communication tasks in distributed automation environments.\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\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003e396879-01-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eEmerson\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOrigin\u003c\/th\u003e\n\u003ctd\u003eU.S.A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003eRack-mounted CPU module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Temp\u003c\/th\u003e\n\u003ctd\u003e-40 deg C to +85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStorage Temp\u003c\/th\u003e\n\u003ctd\u003e-40 deg C to +85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRelative Humidity\u003c\/th\u003e\n\u003ctd\u003eUp to 95% RH, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProcessor\u003c\/th\u003e\n\u003ctd\u003eSharp LH7A400 SoC, ARM9TDMI 32-bit RISC core\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClock Frequency\u003c\/th\u003e\n\u003ctd\u003e33 MHz or 150 MHz system clock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCore Voltage\u003c\/th\u003e\n\u003ctd\u003e1.8 V internal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSRAM\u003c\/th\u003e\n\u003ctd\u003e2 MB with battery backup\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSDRAM\u003c\/th\u003e\n\u003ctd\u003e64 MB synchronous dynamic RAM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSystem Flash\u003c\/th\u003e\n\u003ctd\u003e512 KB boot\/loader flash\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication Flash\u003c\/th\u003e\n\u003ctd\u003e16 MB read\/write flash\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEthernet Port\u003c\/th\u003e\n\u003ctd\u003e1 × 10\/100 Base-T RJ45\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSerial Ports\u003c\/th\u003e\n\u003ctd\u003e2 × RS-232, 1 × RS-485 isolated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStatus Indicators\u003c\/th\u003e\n\u003ctd\u003eTX\/RX LEDs per communication port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Supply Input\u003c\/th\u003e\n\u003ctd\u003e+12 VDC nominal (10.7–30 VDC), +24 VDC nominal (21.7–30 VDC) via PSSM module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProfinet \/ EtherNet\/IP Deterministic Networks\u003c\/h3\u003e\n\u003cp\u003eThe 396879-01-2 CPU integrates with deterministic Ethernet networks, supporting real-time communication across distributed RTU and SCADA systems. Its ARM9TDMI core ensures predictable execution cycles, while firmware flash compatibility allows seamless upgrades without disrupting backplane communication velocity. This architecture supports I\/O density scaling across multiple subsystems.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003eQ: Can the CPU operate in extreme outdoor RTU environments? A: Yes. It is rated for -40 deg C to +85 deg C, suitable for harsh industrial sites.\u003c\/p\u003e\n\u003cp\u003eQ: How is nonvolatile memory protected? A: SRAM is battery-backed, while flash memory provides long-term retention without battery support.\u003c\/p\u003e\n\u003cp\u003eQ: Are firmware upgrades supported? A: Yes. Application flash supports simultaneous read\/write operations, enabling in-field firmware updates.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the CPU module in designated rack slots with full connector engagement.\u003c\/li\u003e\n\u003cli\u003eEnsure Ethernet cabling is shielded and routed separately from high-voltage conductors.\u003c\/li\u003e\n\u003cli\u003eVerify DC supply voltage range before energizing; connect via PSSM power supply module.\u003c\/li\u003e\n\u003cli\u003eGround chassis to cabinet earth to reduce induced noise.\u003c\/li\u003e\n\u003cli\u003eConfirm TX\/RX LED indicators during commissioning to validate communication ports.\u003c\/li\u003e\n\u003cli\u003eMaintain environmental conditions within specified operating and storage ranges.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Delta V","offers":[{"title":"Default Title","offer_id":44215072227402,"sku":"396879-01-2","price":310.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/8569\/3770\/files\/396604-01-3_3.png?v=1789462054","url":"https:\/\/www.topbrandsplc.com\/products\/emerson-396879-01-2-central-processing-unit","provider":"Topbrands PLC Limited","version":"1.0","type":"link"}