{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7212-1HE31-0XB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7212-1HE31-0XB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7212-1HE31-0XB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7212-1HE31-0XB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 6ES7212-1HE31-0XB0, SIMATIC S7-1200 CPU 1212C, 24 V DC, compact controller with 1024 byte I/O, FBD/LAD/SCL, PROFIBUS, MODBUS, cULus.","salesMarkdown":"## CPU 1212C with full communication stack This 6ES7212-1HE31-0XB0 is the Siemens SIMATIC S7-1200 CPU 1212C, a compact controller that runs programs in FBD, LAD, or SCL. It draws power from a 24 V DC supply rated for 20.4 V to 28.8 V, staying within safe margins for industrial 24 V rails. The CPU integrates 1 Mbyte work memory, enough for moderate machine logic and small data blocks. Digital and analog I/O maps to 1 024 byte each. Forcing is supported, allowing output override during commissioning without altering the program. Dimensions are 90 mm wide, 100 mm high, 75 mm deep — fits standard DIN-rail enclosures with adequate side clearance for airflow. A typical backup time of 480 hours retains the program and volatile tags during power loss, suiting batch processes where overnight shutdowns are routine. The real-time clock and memory bits hold without external battery packs. ## Approvals and compliance footprint Carries cULus, CE, FM, UL, and CSA marks, clearing most North American and European machinery directives. The CE mark indicates compliance with EMC and low-voltage requirements; FM approval covers hazardous-location installations up to Class I Div 2. PROFIBUS and MODBUS (TCP/IP and RTU) are native, along with UDP and AS-Interface master capability. The CPU can act as both Modbus client and server, simplifying integration with older field devices without a separate gateway.","metaTitle":"Siemens 6ES7212-1HE31-0XB0 CPU 1212C, 24V DC, 70°C, cULus","metaDescription":"Siemens SIMATIC S7-1200 CPU 1212C, 24V DC supply, -40 to 70°C, 1 MB work memory, cULus/CE/FM/UL/CSA approved. Sourced to order via RFQ.","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":"6ES7212-1HE31-0XB0","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/relay, onboard I/O: 8 DI 24 V DC; 6 DO relay 2 A; 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; twisted and shielded","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.":"385 g","Without Battery":"Yes","lifecycle_stage":"current","\"0\" To \"1\", Max.":"10 ms; max.","\"1\" To \"0\", Max.":"10 ms; max.","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.":"30 W with DC, 200 W with AC","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 \"1\", Typ.":"1 mA","ISO-on-TCP (RFC1006)":"Yes","Inrush current, max.":"12 A; at 28.8 V","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","Number of analog inputs":"2","Number of relay outputs":"6","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; Relays","With Resistive Load, Max.":"2 A","Between Different Circuits":"500 V DC between 24 V DC and 5 V DC","Hardware clock (real-time)":"Yes","Installation altitude, max.":"2 000 m","Installation altitude, min.":"-1 000 m","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","Number of operating cycles, max.":"mechanically 10 million, at rated load voltage 100 000","for backplane bus (5 V DC), max.":"1 000 mA; Max. 5 V DC for SM and CM","Current consumption (rated value)":"175 mA; Typical","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":"Relays","SO2 at RH < 60% without condensation":"S02: < 0.5 ppm; H2S: < 0.1 ppm; RH < 60% condensation-free","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","Operation, tested according to IEC 60068-2-6":"Yes","Of The Pulse Outputs, With Resistive Load, Max.":"1 Hz","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":"$371.48","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=131568&mlfb=6ES7212-1HE31-0XB0"},"ai":{"faq":[{"question":"What communication protocols does this CPU support?","answer":"It supports PROFIBUS, MODBUS (TCP/IP and RTU), UDP, and AS-Interface. The Modbus interface can operate as both client and server. No PROFIsafe functionality is included."},{"question":"How long does the CPU retain data during a power outage?","answer":"The backup time is typically 480 hours, retaining the program, memory bits, timers, counters, and distributed I/O configurations."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7212-1HE31-0XB0","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/6ES7212-1HE31-0XB0 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}}