{"product_id":"siemens-simatic-s5-6es5928-3ub21-cpu-928b-central-processing-unit","title":"Siemens SIMATIC S5 6ES5928-3UB21 CPU 928B Unité centrale de traitement","description":"\n\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"citation-381\"\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003eSiemens 6ES5928-3UB21 (6ES59283UB21)\u003c\/strong\u003e\u003cspan class=\"citation-381\"\u003e\u003cspan\u003e \u003c\/span\u003eis a high-performance\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003eCPU 928B\u003c\/strong\u003e\u003cspan class=\"citation-381 citation-end-381\"\u003e\u003cspan\u003e \u003c\/span\u003ecentral processing unit designed for the SIMATIC S5-135U and S5-155U multi-processor controller systems.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eThis \"New Version\" single-width module represents one of the most powerful processing options for the S5 family, engineered to handle extremely complex logic and high-speed data processing tasks. A standout feature of the CPU 928B is its integrated\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSS slot\u003c\/strong\u003e, which allows for the installation of a second serial interface, enabling simultaneous communication with multiple HMI, SCADA, or peer-to-peer networks. In mission-critical environments like automotive powertrain assembly and continuous chemical processing, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e6ES5928-3UB21\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprovides the deterministic execution and high-speed floating-point arithmetic necessary to maintain peak operational throughput.\u003c\/p\u003e\n\u003ch3\u003eTechnical Configuration\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"citation-380\"\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003eCPU 928B\u003c\/strong\u003e\u003cspan class=\"citation-380 citation-end-380\"\u003e\u003cspan\u003e \u003c\/span\u003eis built on a sophisticated hardware platform that enables it to operate as either a standalone controller or as part of a multi-processor rack.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan class=\"citation-379\"\u003e\u003c\/span\u003e\u003cstrong\u003eDual Interface Capability\u003c\/strong\u003e\u003cspan class=\"citation-379 citation-end-379\"\u003e: The dedicated SS (Sub-Slot) interface allows for modular expansion, supporting various communication protocols for localized or remote data exchange.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan class=\"citation-378\"\u003e\u003c\/span\u003e\u003cstrong\u003eInstruction Processing\u003c\/strong\u003e\u003cspan class=\"citation-378 citation-end-378\"\u003e: Optimized for rapid execution of STEP 5 code, specifically handling complex mathematical functions and large data block (DB) structures with minimal scan time impact.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan class=\"citation-377\"\u003e\u003c\/span\u003e\u003cstrong\u003eSingle-Width Form Factor\u003c\/strong\u003e\u003cspan class=\"citation-377 citation-end-377\"\u003e: Despite its advanced processing capabilities, the module occupies only one slot in the S5 rack, allowing for higher I\/O density and module variety in the main chassis.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDiagnostic Monitoring\u003c\/strong\u003e: The front panel features a comprehensive array of LED indicators for hardware health, cycle time monitoring, and bus status, facilitating rapid on-site troubleshooting.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMemory Submodule Port\u003c\/strong\u003e: Features a high-retention slot for external EPROM or RAM submodules, ensuring secure program storage and easy version control.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eAttribute\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eModel\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e6ES5928-3UB21 (CPU 928B)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBrand\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSiemens\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSeries\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSIMATIC S5-135U \/ 155U\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eModule Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCentral Processing Unit (CPU)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSlot Width\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSingle-Width\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOrigin\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eGermany\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWeight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.519 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eDimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e26.5 x 21.3 x 3.3 cm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eCommodity Code\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e85371091\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eExport Control (ECCN)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eN\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProgramming Language\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSTEP 5\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTechnical FAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the advantage of the CPU 928B over the standard CPU 928?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"citation-376 citation-end-376\"\u003eThe \"B\" version (6ES5928-3UB21) includes the additional interface slot (SS slot), providing significantly more flexibility for networking and data logging without requiring a separate communication processor (CP) module.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I address the second interface in my STEP 5 program?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe second interface is addressed via specific system function blocks (SFBs) or through the configuration of the interface submodule installed in the SS slot. Ensure your COM software version supports the specific submodule used.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this module RoHS compliant?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBased on its industrial legacy status, this product is not RoHS-compliant.\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"citation-375 citation-end-375\"\u003eIt contains lead and diboron trioxide above 0.1% thresholds, which is standard for high-durability electronic components of this era.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eEngineering \u0026amp; Installation Guide\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSubmodule Security:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhen installing a second interface into the SS slot or a memory submodule into the main port, ensure the PLC power is off. Use the mechanical locking levers to ensure the submodules are fully seated; a loose connection here can cause intermittent \"QVZ\" (Timeout) errors or CPU resets during machine vibration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMulti-Processor Synchronization:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIf using the CPU 928B in a rack with other CPUs (such as a CPU 922), you must correctly configure the \"Interrupt Stack\" and coordination bits in the DB1. This ensures that the processors do not collide when accessing the same I\/O images or global data blocks.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eThermal Management:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDespite its single-width design, the 928B generates significant heat due to its high clock speed. Ensure the S5 rack fan tray is fully operational. If the CPU temperature exceeds internal thresholds, it may trigger a \"Stop\" condition to protect the CMOS logic.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":52716787007851,"sku":"6ES5928-3UB21","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/6es5928-3ub21-hzly5lb4e4z_2677a871-c519-49e5-b335-62c0d7f3fd19.jpg?v=1767089780","url":"https:\/\/www.plcprotech.com\/fr\/products\/siemens-simatic-s5-6es5928-3ub21-cpu-928b-central-processing-unit","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}