{"product_id":"6es7312-5be03-0ab0-siemens-simatic-s7-300-compact-cpu","title":"6ES7312-5BE03-0AB0 Siemens SIMATIC S7-300 Compact CPU","description":"\u003ch2\u003e\u003cstrong\u003e6ES7312-5BE03-0AB0 Siemens SIMATIC S7-300 CPU 312C Compact CPU\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e \u003cspan style=\"color: #0b5394;\"\u003eSiemens\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e \u003cstrong\u003e6ES7312-5BE03-0AB0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Compact CPU \/ spare part\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e SIMATIC S7-300, CPU 312C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardware Version:\u003c\/strong\u003e 01\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirmware Version:\u003c\/strong\u003e V2.6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProgramming Package:\u003c\/strong\u003e STEP 7 V5.3 SP2 or higher with HW update\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply Voltage:\u003c\/strong\u003e 24 V DC rated, 20.4 V to 28.8 V permissible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Consumption:\u003c\/strong\u003e 500 mA rated, 60 mA typical no-load\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInrush Current:\u003c\/strong\u003e 11 A typical, I²t 0.7 A²·s\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Loss:\u003c\/strong\u003e 6 W typical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Memory:\u003c\/strong\u003e 32 kbyte integrated, not expandable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoad Memory:\u003c\/strong\u003e Plug-in MMC, max. 4 Mbyte\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eData Retention:\u003c\/strong\u003e 10 years minimum on MMC after last programming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBit Operation Time:\u003c\/strong\u003e 0.2 µs typical, 0.4 µs maximum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWord Operation Time:\u003c\/strong\u003e 0.4 µs typical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFloating Point Time:\u003c\/strong\u003e 6 µs typical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital Inputs:\u003c\/strong\u003e 10, rated 24 V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital Outputs:\u003c\/strong\u003e 6, rated 500 mA, 2 high-speed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Counters:\u003c\/strong\u003e 2, up to 10 kHz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterface:\u003c\/strong\u003e 1 x RS 485 MPI, max. 50 m cable without repeater\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 0 °C to 60 °C horizontal, 0 °C to 40 °C vertical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 80 mm width, 125 mm height, 130 mm depth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e Approx. 409 g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003ePerformance and Memory\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe CPU handles 1,024 blocks total across DBs, FCs, and FBs.\u003c\/li\u003e\n\u003cli\u003eData blocks range from DB1 to DB511, each up to 16 kbyte.\u003c\/li\u003e\n\u003cli\u003eFunction blocks and function calls each reach 1,024 with a 16 kbyte size limit.\u003c\/li\u003e\n\u003cli\u003eOrganization blocks cover free cycle, time alarm, delay alarm, and cyclic interrupt tasks.\u003c\/li\u003e\n\u003cli\u003eNesting depth reaches 8 per priority class and 4 inside an error OB.\u003c\/li\u003e\n\u003cli\u003eIEC counters and IEC timers run as SFB types with no fixed number limit.\u003c\/li\u003e\n\u003cli\u003eFlag memory offers 128 bytes, with MB 0 to MB 127 retentive capable.\u003c\/li\u003e\n\u003cli\u003eA software clock tracks time with a maximum deviation of 15 seconds per day.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eDigital Input and Output Details\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInput signal \"0\" sits between -3 V and +5 V, while signal \"1\" spans +15 V to +30 V.\u003c\/li\u003e\n\u003cli\u003eInput current for signal \"1\" measures about 9 mA typical.\u003c\/li\u003e\n\u003cli\u003eInput delay is parameterizable at 0.1, 0.3, 3, or 15 ms.\u003c\/li\u003e\n\u003cli\u003eCounter inputs respond within 48 µs maximum at the \"0\" to \"1\" transition.\u003c\/li\u003e\n\u003cli\u003eShielded input cable reaches 1,000 m, but technological functions limit it to 100 m.\u003c\/li\u003e\n\u003cli\u003eOutputs deliver at least L+ minus 0.8 V for signal \"1\".\u003c\/li\u003e\n\u003cli\u003eOutput current ranges from 5 mA minimum to 0.6 A maximum per channel.\u003c\/li\u003e\n\u003cli\u003eShort-circuit protection works electronically with a 1 A typical threshold.\u003c\/li\u003e\n\u003cli\u003eResistive load switching reaches 100 Hz, and pulse outputs reach 2.5 kHz.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation Guide\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMount the CPU on a standard S7-300 rail with up to 8 modules per rack.\u003c\/li\u003e\n\u003cli\u003eUse only 1 rack because this compact CPU supports no expansion units.\u003c\/li\u003e\n\u003cli\u003eConnect the 40-pin front connector before you apply 24 V DC power.\u003c\/li\u003e\n\u003cli\u003eInsert a micro memory card to store the program and retain data.\u003c\/li\u003e\n\u003cli\u003eProtect supply lines with a type C breaker of at least 2 A.\u003c\/li\u003e\n\u003cli\u003eKeep shielded cables within 1,000 m for standard digital signals.\u003c\/li\u003e\n\u003cli\u003eSet input delays and retentive ranges in STEP 7 during hardware configuration.\u003c\/li\u003e\n\u003cli\u003eVerify MPI wiring stays under 50 m when you run the bus without a repeater.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003ePackage List\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Siemens \u003cstrong\u003e6ES7312-5BE03-0AB0\u003c\/strong\u003e CPU 312C compact module\u003c\/li\u003e\n\u003cli\u003e1 x 40-pin front connector\u003c\/li\u003e\n\u003cli\u003e1 x Anti-static protective bag\u003c\/li\u003e\n\u003cli\u003e1 x Original Siemens packaging box\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eShipping and Support\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWe ship orders within 5 days after payment confirmation.\u003c\/li\u003e\n\u003cli\u003eWe use FedEx, UPS, and DHL for fast international delivery.\u003c\/li\u003e\n\u003cli\u003eWe offer 30-day returns for eligible unused products.\u003c\/li\u003e\n\u003cli\u003eOur stock is brand new and original, with real-time availability.\u003c\/li\u003e\n\u003cli\u003eYou can contact our sales team for bulk orders or technical questions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Does the 6ES7312-5BE03-0AB0 need a micro memory card?\u003c\/strong\u003e\u003cbr\u003eA: Yes, the CPU requires an MMC for program storage and battery-free data retention.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: How many digital inputs and outputs does this CPU offer?\u003c\/strong\u003e\u003cbr\u003eA: It provides 10 digital inputs and 6 digital outputs, with 2 high-speed outputs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the maximum working memory of this CPU?\u003c\/strong\u003e\u003cbr\u003eA: It offers 32 kbyte of integrated working memory and cannot expand further.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Can I add expansion modules to this compact CPU?\u003c\/strong\u003e\u003cbr\u003eA: No, it supports 0 expansion units and only 1 rack with up to 8 modules.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What communication interface does the CPU 312C use?\u003c\/strong\u003e\u003cbr\u003eA: It uses one RS 485 MPI interface with a maximum cable length of 50 m.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the supply voltage range for this module?\u003c\/strong\u003e\u003cbr\u003eA: It runs on 24 V DC rated, with a permissible range of 20.4 V to 28.8 V.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: How fast are the integrated counters?\u003c\/strong\u003e\u003cbr\u003eA: The two fast counters reach a maximum frequency of 10 kHz.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: How long does the MMC retain data after programming?\u003c\/strong\u003e\u003cbr\u003eA: The MMC keeps data for at least 10 years after the last programming.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: How fast do you ship this product?\u003c\/strong\u003e\u003cbr\u003eA: We keep stock and ship within 5 days using DHL, FedEx, or UPS.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Do you accept returns?\u003c\/strong\u003e\u003cbr\u003eA: Yes, we support 30-day returns under our standard return policy.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eContact Information\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInquiries: \u003ca href=\"mailto:sales@nex-auto.com\"\u003esales@nex-auto.com\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eWhatsApp: \u003ca href=\"https:\/\/wa.me\/8615392429628\"\u003e+86 153 9242 9628\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003ePartner NexAuto Technology Limited: \u003ca href=\"https:\/\/www.nex-auto.com\/\"\u003ehttps:\/\/www.nex-auto.com\/\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":47434308223137,"sku":"6ES7312-5BE03-0AB0","price":258.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/5390\/3265\/files\/6ES7312-5BE03-0AB0.jpg?v=1789541324","url":"https:\/\/www.autonexcontrol.com\/products\/6es7312-5be03-0ab0-siemens-simatic-s7-300-compact-cpu","provider":"AutoNex Controls Limited ","version":"1.0","type":"link"}