{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7212-1AE31-0XB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7212-1AE31-0XB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7212-1AE31-0XB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7212-1AE31-0XB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens S7-1200 CPU 1212C, 6ES7212-1AE31-0XB0, 24 V DC, 1 MB memory, -40…70 °C, FBD/LAD/SCL, PROFIBUS DP, MODBUS TCP/IP, cULus/CE/UL/CSA/FM.","salesMarkdown":"The Siemens 6ES7212-1AE31-0XB0 is an S7-1200 CPU 1212C, the workhorse for compact automation. It runs on 24 V DC with a permissible range of 20.4 to 28.8 V, so it tolerates a sagging supply or battery-backed bus. Ambient operating temperature spans -40 to 70 °C, allowing placement in non-climate-controlled panels without derating. Integrated program and data memory sits at 1 Mbyte, and a typical backup time of 480 h holds the logic through power interruptions. With 1 024 bytes each for inputs and outputs, it handles a moderate I/O count. ## Programming and communication Supports three IEC languages out of the box: FBD, LAD, and SCL. No extra licenses for basic logic. On the comms side, it carries PROFIBUS DP (client and server), MODBUS RTU/TCP, TCP/IP, UDP, and AS-Interface — enough to talk to drives, remote I/O, and SCADA without additional gateways. Listed approvals include cULus, CE, UL, CSA, and FM. That covers North American and European safety and industrial control requirements.","metaTitle":"Siemens 6ES7212-1AE31-0XB0 S7-1200 CPU, 24 V DC, -40 to 70°C","metaDescription":"Siemens 6ES7212-1AE31-0XB0 S7-1200 CPU 1212C, 24 V DC (20.4 to 28.8 V), -40 to 70°C, 1 MB integrated memory, 480 h backup. Supports FBD, LAD, SCL. UL, cULus, CE, CSA, FM approved.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"FBD":"Yes","LAD":"Yes","SCL":"Yes","UDP":"Yes","24 V":"Permissible range: 20.4V to 28.8V","Max.":"70 °C","Min.":"-40 °C","Depth":"75 mm","Width":"90 mm","cULus":"Yes","title":"6ES7212-1AE31-0XB0","Height":"100 mm","Inputs":"1 024 byte","MODBUS":"Yes","TCP/IP":"Yes","24 V DC":"Yes","CE mark":"Yes","Forcing":"Yes","Outputs":"1 024 byte","Present":"Yes","Voltage":"Yes","Isolated":"Yes","PROFIBUS":"Yes","As Client":"Yes","As Server":"Yes","PROFIsafe":"No","Supported":"Yes","Variables":"Inputs/outputs, memory bits, DBs, distributed I/Os, timers, counters","0 to +10 V":"Yes","Adjustable":"Yes","Integrated":"1 Mbyte","Size, max.":"4 kbyte; Size of bit memory address area","Backup time":"480 h; Typical","FM approval":"Yes","UL approval":"Yes","description":"SIMATIC S7-1200, CPU 1212C, compact CPU, DC/DC/DC, onboard I/O: 8 DI 24 V DC; 6 DO 24 V DC; 2 AI 0-10 V DC, Power supply: DC 20.4-28.8V DC, Program/data memory 50 KB","AS-Interface":"Yes","Autocrossing":"Yes","CSA approval":"Yes","Number, max.":"Limited only by RAM for code","2-Wire Sensor":"Yes","For Signal \"0\"":"5 V DC at 1 mA","For Signal \"1\"":"15 V DC at 2.5 mA","Interface type":"PROFINET","PID controller":"Yes","Shielded, Max.":"100 m; shielded, twisted pair","Autonegotiation":"Yes","Marine approval":"Yes","Operation, max.":"95 %; no condensation","Operation, min.":"795 hPa","Parameterizable":"Single phase: 3 @ 100 kHz & 1 @ 30 kHz, differential: 3 @ 80 kHz & 1 @ 30 kHz","Weight, approx.":"370 g","Without Battery":"Yes","lifecycle_stage":"current","\"0\" To \"1\", Max.":"1 µs","\"1\" To \"0\", Max.":"5 µs","Power loss, typ.":"9 W","RJ 45 (Ethernet)":"Yes","Rated value (DC)":"24 V","Unshielded, Max.":"150 m","Fall height, max.":"0.3 m; five times, in product package","Source/sink input":"Yes","Inputs, adjustable":"1 kbyte","Number of counters":"4","On Lamp Load, Max.":"5 W","up to 40 °C, max.":"8","At \"0\" To \"1\", Max.":"12.8 ms","At \"0\" To \"1\", Min.":"0.2 ms","Outputs, adjustable":"1 kbyte","Programming package":"STEP 7 V11 SP2 or higher","Between The Channels":"No","For Signal \"0\", Max.":"0.1 V; with 10 kOhm load","For Signal \"1\", Min.":"20 V","For Signal \"1\", Typ.":"1 mA","ISO-on-TCP (RFC1006)":"Yes","Inrush current, max.":"12 A; at 28.8 V DC","Frequency measurement":"Yes","RCM (formerly C-TICK)":"Yes","User-defined websites":"Yes","Controlled Positioning":"Yes","Number of alarm inputs":"4","PROFINET IO Controller":"Yes","Deviation per day, max.":"60 s/month at 25 °C","IP degree of protection":"IP20","Limit frequency (pulse)":"100 kHz","Number of analog inputs":"2","Number of pulse outputs":"2","Number of relay outputs":"0","Status/control variable":"Yes","Storage/transport, max.":"1 080 hPa","Storage/transport, min.":"660 hPa","Counting frequency, max.":"100 kHz","For Bit Operations, Typ.":"0.085 µs; / instruction","Number of analog outputs":"0","Number of blocks (total)":"DBs, FCs, FBs, counters and timers. The maximum number of addressable blocks ranges from 1 to 65535. There is no restriction, the entire working memory can be used","Number of digital inputs":"8; Integrated","Short-circuit protection":"No; to be provided externally","Current consumption, max.":"1.2 A; 24 V DC","For Word Operations, Typ.":"1.7 µs; / instruction","Number of digital outputs":"6","With Resistive Load, Max.":"0.5 A","Between Different Circuits":"500 V DC between 24 V DC and 5 V DC","For Signal \"1\" Rated Value":"0.5 A","Hardware clock (real-time)":"Yes","Installation altitude, max.":"2 000 m","Installation altitude, min.":"-1 000 m","Of Which High-Speed Outputs":"4; 100 kHz Pulse Train Output","Vertical Installation, Max.":"50 °C","Vertical Installation, Min.":"-20 °C","Input resistance (0 to 10 V)":"≥100k ohms","Conversion time (per channel)":"625 µs","Horizontal Installation, Max.":"60 °C","Horizontal Installation, Min.":"-20 °C","Test voltage at air discharge":"8 kV","for backplane bus (5 V DC), max.":"1 000 mA; Max. 5 V DC for SM and CM","Integration time, parameterizable":"Yes","Supports protocol for PROFINET IO":"Yes","Test voltage at contact discharge":"6 kV","Between The Channels, In Groups Of":"1","Number of modules per system, max.":"3 comm. modules, 1 signal board, 2 signal modules","tested according to IEC 60068-2-27":"Yes; IEC 68, Part 2-27 half-sine: strength of the shock 15 g (peak value), duration 11 ms","For Floating Point Arithmetic, Typ.":"2.5 µs; / instruction","Potential separation digital inputs":"500V AC for 1 minute","permissible range, lower limit (DC)":"20.4 V","permissible range, upper limit (DC)":"28.8 V","Potential separation digital outputs":"Yes","SO2 at RH < 60% without condensation":"S02: < 0.5 ppm; H2S: < 0.1 ppm; RH < 60% condensation-free","For Signal \"0\" Residual Current, Max.":"0.1 mA","Automatic Detection Of Transmission Rate":"Yes","Limit class A, for use in industrial areas":"Yes; Group 1","Limit class B, for use in residential areas":"Yes; When appropriate measures are used to ensure compliance with the limits for Class B according to EN 55011","Limitation of inductive shutdown voltage to":"L+ (-48 V)","Operation, tested according to IEC 60068-2-6":"Yes","Of The Pulse Outputs, With Resistive Load, Max.":"100 kHz","Of Which Inputs Usable For Technological Functions":"4; HSC (High Speed Counting)","Resolution with overrange (bit including sign), max.":"10 bit","Retentive data area (incl. timers, counters, flags), max.":"10 kbyte"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$618.36","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f197dc5500844272ef47c2d7b0a90673.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=190295&mlfb=6ES7212-1AE31-0XB0"},"ai":{"faq":[{"question":"What is the supply voltage range for 6ES7212-1AE31-0XB0?","answer":"The permissible range is 20.4 to 28.8 V DC."},{"question":"What programming languages are supported?","answer":"FBD, LAD, and SCL are listed."},{"question":"What is the integrated memory size?","answer":"1 Mbyte of program and data memory, with a typical backup time of 480 h."},{"question":"What approvals does this CPU carry?","answer":"cULus, CE, UL, CSA, and FM."},{"question":"What communication protocols are included?","answer":"PROFIBUS DP (client/server), MODBUS, TCP/IP, UDP, and AS-Interface."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7212-1AE31-0XB0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/6ES7212-1AE31-0XB0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}