{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7211-1HE40-0XB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7211-1HE40-0XB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7211-1HE40-0XB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7211-1HE40-0XB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens S7-1200 CPU, 6ES7211-1HE40-0XB0, 24 V DC, OPC UA server, Modbus TCP, 1 Mbyte memory.","salesMarkdown":"It also speaks Modbus TCP natively and supports PROFIBUS via the CM 1243-5 or CM 1242-5 modules, making it a practical choice for plants that mix Siemens and third-party gear. ## Open connectivity, no gateway hack Native OPC UA server (configured as client or server) eliminates the need for custom drivers in most automation architectures. For existing Modbus RTU or TCP field devices, the built-in Modbus TCP support folds them into the controller without add-on hardware. The connection budget reserves 10 OPC UA slots and 14 open user connections; total available connections top out at 64—enough for a medium-sized line without hitting limits. PROFIBUS integration requires a dedicated CM module—master or slave depending on network role—so factor that into panel layout if you have legacy drives or remote I/O on that bus. ## Sizing and selection notes The CPU operates over -40 to 70 °C and accepts an isolated 24 V DC supply (L+ minus 4 V DC minimum). Programming in LAD, FBD, or SCL is supported; forcing variables is also available for commissioning. The 1 Mbyte integrated memory covers program and data for most standalone or small-network applications—if that fills up, step to a 6ES7212 variant. Dimensions are 100 x 90 x 75 mm, with cULus and CE marks on file. No BR/PL/REACH/RoHS declarations are listed in this record, so verify with the factory if your compliance package requires them.","metaTitle":"Siemens 6ES7211-1HE40-0XB0 S7-1200 CPU, 24V DC, OPC UA","metaDescription":"Siemens 6ES7211-1HE40-0XB0 S7-1200 CPU. 24 V DC supply, OPC UA server, Modbus TCP, PROFIBUS via CM. 1 Mbyte memory, LAD/FBD/SCL. -40 to 70°C. Sourced to RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"DCP":"Yes","FBD":"Yes","I2t":"0.8 A²·s","IRT":"No","LAD":"Yes","MRP":"No","SCL":"Yes","UDP":"Yes","24 V":"L+ minus 4 V DC min.","DHCP":"No","LLDP":"Yes","MRPD":"No","Max.":"70 °C","Min.":"-40 °C","SNMP":"Yes","Depth":"75 mm","Width":"90 mm","cULus":"Yes","title":"6ES7211-1HE40-0XB0","Height":"100 mm","MODBUS":"Yes","OPC UA":"Yes; OPC UA Server","TCP/IP":"Yes","24 V DC":"Yes","CE mark":"Yes","Forcing":"Yes","Overall":"PG Connections: 4 reserved / 4 max; HMI Connections: 12 reserved / 18 max; S7 Connections: 8 reserved / 14 max; Open User Connections: 8 reserved / 14 max; Web Connections: 2 reserved / 30 max; OPC UA Connections: 0 reserved / 10 max; Total Connections: 34 reserved / 64 max","Present":"Yes","Voltage":"Yes","Isolated":"Yes","PROFIBUS":"Yes; CM 1243-5 (master) or CM 1242-5 (slave) required","As Client":"Yes","As Server":"Yes","ERROR LED":"Yes","MAINT LED":"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","S7 routing":"Yes","Size, max.":"4 kbyte; Size of bit memory address area","Web server":"Yes","Backup time":"480 h; Typical","FM approval":"Yes","KC approval":"Yes","PROFIenergy":"Yes","UL approval":"Yes","description":"SIMATIC S7-1200, CPU 1211C, compact CPU, DC/DC/relay, onboard I/O: 6 DI 24 V DC; 4 DO relay 2A; 2 AI 0-10 V DC, Power supply: DC 20.4-28.8V DC, Program/data memory 50 KB","AS-Interface":"Yes; CM 1243-2 required","Autocrossing":"Yes","Number, max.":"Limited only by RAM for code","RUN/STOP LED":"Yes","2-Wire Sensor":"Yes","OPC UA Server":"Yes; data access (read, write, subscribe), method call, runtime license required","Shared device":"Yes","Updating time":"The minimum value of the update time also depends on the communication component set for PROFINET IO, on the number of IO devices and the quantity of configured user data.","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","Copy protection":"Yes","Marine approval":"Yes","Number of ports":"1","Operation, max.":"95 %; no condensation","Operation, min.":"795 hPa","Parameterizable":"Single phase : 3 @ 100 kHz, differential: 3 @ 80 kHz","Weight, approx.":"380 g","Without Battery":"Yes","lifecycle_stage":"current","\"0\" To \"1\", Max.":"10 ms; max.","\"1\" To \"0\", Max.":"10 ms; max.","Block protection":"Yes","Firmware version":"V4.5","Isochronous mode":"No","Maintenance-Free":"Yes","Media redundancy":"No","Power loss, typ.":"8 W","RJ 45 (Ethernet)":"Yes","Rated value (DC)":"24 V","Unshielded, Max.":"150 m","Data length, max.":"1 472 byte","Fall height, max.":"0.3 m; five times, in product package","Integrated Switch":"No","Source/sink input":"Yes","Inputs, adjustable":"1 kbyte","Number of counters":"6","On Lamp Load, Max.":"30 W with DC, 200 W with AC","PROFINET IO Device":"Yes","up to 40 °C, max.":"6","At \"0\" To \"1\", Max.":"12.8 ms","At \"0\" To \"1\", Min.":"0.2 ms","Outputs, adjustable":"1 kbyte","PG/OP communication":"Yes; encryption with TLS V1.3 pre-selected","Prioritized startup":"Yes","Programming package":"STEP 7 V17 or higher","User authentication":"\"anonymous\" or by user name & password","Between The Channels":"No","For Signal \"1\", Typ.":"4 mA; nominal","ISO-on-TCP (RFC1006)":"Yes","Inrush current, max.":"12 A; at 28.8 V DC","Frequency measurement":"Yes","Open IE communication":"Yes; Optionally also encrypted","RCM (formerly C-TICK)":"Yes","SIMATIC communication":"Yes","User-defined websites":"Yes","Controlled Positioning":"Yes","Number of alarm inputs":"4","Of Which In Line, Max.":"16","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":"4","Sampling interval, min.":"100 ms","Status/control variable":"Yes","Storage/transport, max.":"1 080 hPa","Storage/transport, min.":"660 hPa","Transmission rate, max.":"100 Mbit/s","User data per job, max.":"See online help (S7 communication, user data size)","Counting frequency, max.":"100 kHz","For Bit Operations, Typ.":"0.08 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":"6; Integrated","Number of sessions, max.":"10","Per Priority Class, Max.":"16 kbyte; Priority class 1 (program cycle): 16 KB, priority class 2 to 26: 6 KB","Runtime license required":"Yes; \"Basic\" license required","Current consumption, max.":"900 mA; CPU with all expansion modules","For Word Operations, Typ.":"1.7 µs; / instruction","Number of digital outputs":"4; Relays","Publishing interval, min.":"200 ms","With Resistive Load, Max.":"2 A","Application authentication":"Available security policies: None, Basic128Rsa15, Basic256Rsa15, Basic256Sha256","Hardware clock (real-time)":"Yes","Installation altitude, max.":"5 000 m; Restrictions for installation altitudes > 2 000 m, see manual","Installation altitude, min.":"-1 000 m","Memory size per trace, max.":"512 kbyte","Reverse polarity protection":"Yes","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","Number of configurable Traces":"2","Test voltage at air discharge":"8 kV","Number of server methods, max.":"20","Number of operating cycles, max.":"mechanically 10 million, at rated load voltage 100 000","for backplane bus (5 V DC), max.":"750 mA; Max. 5 V DC for CM","Current consumption (rated value)":"300 mA; CPU only","Integration time, parameterizable":"Yes","Number of server interfaces, max.":"2","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 communication modules, 1 signal board","Protection level: Write protection":"Yes","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.":"2.3 µs; / instruction","Plug-in (SIMATIC Memory Card), max.":"with SIMATIC memory card","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","Activation/deactivation of IO Devices":"Yes","Protection level: Complete protection":"Yes","Number of connectable IO Devices, max.":"16","Protection level: Read/write protection":"Yes","Automatic Detection Of Transmission Rate":"Yes","Number of subscriptions per session, max.":"5","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","Number of monitored items, recommended max.":"1 000","User program protection/password protection":"Yes","Operation, tested according to IEC 60068-2-6":"Yes","Number of connectable IO Devices for RT, max.":"16","Protection Of Confidential Configuration Data":"Yes","Several Passive Connections Per Port, Supported":"Yes","Number of IO Controllers with shared device, max.":"2","Of Which Inputs Usable For Technological Functions":"6; HSC (High Speed Counting)","Number of IO devices with prioritized startup, max.":"16","Number of position-controlled positioning axes, max.":"8","Resolution with overrange (bit including sign), max.":"10 bit","Number of nodes for user-defined server interfaces, max.":"2 000","Number of positioning axes via pulse-direction interface":"Up to 4 with SB 1222","Retentive data area (incl. timers, counters, flags), max.":"14 kbyte","Number of IO Devices that can be simultaneously activated/deactivated, max.":"8"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$200.08 – $375.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/8677a7a73f6f62344e8cda4b3135035d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=358287&mlfb=6ES7211-1HE40-0XB0"},"ai":{"faq":[{"question":"Does this CPU support OPC UA?","answer":"Yes, it has an OPC UA server onboard and can act as both client and server."},{"question":"What communication protocols are built in?","answer":"Modbus TCP and OPC UA. PROFIBUS requires a CM 1243-5 or CM 1242-5 module."},{"question":"What compliance marks are listed?","answer":"cULus and CE mark are confirmed."},{"question":"Can I force variables with this CPU?","answer":"Yes, forcing is supported."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7211-1HE40-0XB0","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/6ES7211-1HE40-0XB0 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}}