{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7511-1FK01-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7511-1FK01-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7511-1FK01-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7511-1FK01-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens S7-1500 CPU, 6ES7511-1FK01-0AB0, PROFIsafe V2.4/V2.6, IRT, -40..70°C, 32 kB I/O image, MODBUS TCP.","salesMarkdown":"The Siemens 6ES7511-1FK01-0AB0 CPU integrates standard and fail-safe logic on one device, supporting PROFIsafe V2.4 / V2.6 for safety applications up to SIL 3 without a separate F-CPU. Onboard PROFINET IRT handles isochronous motion and, together with MRP and MRPD, provides media redundancy for line and ring topologies (IRT required for MRPD). The CPU offers 32 kB input and 32 kB output process image, covering the bulk of distributed I/O in a typical line, and supports MODBUS TCP, DCP, DNS, LLDP, SNMP, and HTTP/HTTPS for integration into existing IT/OT networks. ## Integration notes Width of 35 mm fits a standard DIN-rail slot; total depth 129 mm leaves room for front-panel cabling. Programming options include LAD, FBD, SCL, STL, and GRAPH, with failsafe logic available in LAD and FBD. The CPU also runs integrated PID controllers for temperature and valve positioning with optimization routines. Up to 4 communication modules or processors (PROFIBUS, additional PROFINET, or Ethernet) can be inserted via the left-side bus, expanding connectivity without consuming the on-board PROFINET port.","metaTitle":"Siemens 6ES7511-1FK01-0AB0 CPU, PROFIsafe, IRT","metaDescription":"Siemens S7-1500 CPU with PROFIsafe V2.4/V2.6, IRT, temperature range -40..70°C, 32 kB I/O image. MODBUS TCP, DCP, DNS. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"DCP":"Yes","DNS":"Yes","FBD":"Yes; incl. failsafe","I2t":"0.02 A²·s","IRT":"Yes","LAD":"Yes; incl. failsafe","MRP":"Yes; MRP Automanager according to IEC 62439-2 Edition 2.0, MRP Manager; MRP Client","SCL":"Yes","STL":"Yes","UDP":"Yes","DHCP":"Yes","HTTP":"Yes; Standard and user pages","LLDP":"Yes","MRPD":"Yes; Requirement: IRT","Max.":"70 °C","Min.":"-40 °C","SNMP":"Yes","Type":"Hardware clock","Depth":"129 mm","GRAPH":"Yes","HTTPS":"Yes; Standard and user pages","Width":"35 mm","Height":"147 mm","Inputs":"32 kbyte; All inputs are in the process image","MODBUS":"Yes; MODBUS TCP","Number":"16","TCP/IP":"Yes","Via CM":"4; A maximum of 4 CMs/CPs (PROFIBUS, PROFINET, Ethernet) can be inserted in total","Outputs":"32 kbyte; All outputs are in the process image","Present":"Yes","100 Mbps":"Yes","I&M data":"Yes; I&M0 to I&M3","PID-Temp":"Yes; PID controller with integrated optimization for temperature","ERROR LED":"Yes","MAINT LED":"Yes","PID_3Step":"Yes; PID controller with integrated optimization for valves","PROFIsafe":"Yes; V2.4 / V2.6","Per Probe":"40","Supported":"Yes","Variables":"inputs/outputs, bit memories, DBs, peripheral I/Os (without fail-safe), times, counters","Adjustable":"Yes","Encryption":"Yes; Optional","Integrated":"1","S7 routing":"Yes","Size, max.":"16 kbyte","Web server":"Yes","Backup time":"6 wk; At 40 °C ambient temperature, typically","IP protocol":"Yes; IPv4","Lower Limit":"adjustable minimum cycle time","PID_Compact":"Yes; Universal PID controller with integrated optimization","PROFIenergy":"Yes; per user program","Single step":"No","Upper Limit":"adjustable maximum cycle time","Via Dataset":"Yes","Autocrossing":"Yes","Equidistance":"Yes","Number range":"0 ... 65 535","RUN/STOP LED":"Yes","Status block":"Yes; Up to 8 simultaneously (in total across all ES clients)","in AS, slave":"Yes","OPC UA Client":"Yes","OPC UA Server":"Yes; Data access (read, write, subscribe), method call, custom address space","Per Cam Track":"160","Shared device":"Yes","UDP multicast":"Yes; Max. 5 multicast circuits","in AS, master":"Yes","Motion Control":"Yes; Note: The number of technology objects affects the cycle time of the PLC program; selection guide via the TIA Selection Tool","Number of keys":"6","Per Output Cam":"20","Program alarms":"Yes","Updating times":"The minimum value of the update time also depends on communication share set for PROFINET IO, on the number of IO devices, and on the quantity of configured user data","Autonegotiation":"Yes","Copy protection":"Yes","Inputs (volume)":"8 kbyte","Number of ports":"2","Weight, approx.":"430 g","lifecycle_stage":"current","Block protection":"Yes","Firmware version":"V2.9","Isochronous mode":"No","Maintenance-Free":"Yes","Media redundancy":"only via 1st interface (X1)","Outputs (volume)":"8 kbyte","Power loss, typ.":"5.7 W","RJ 45 (Ethernet)":"Yes; X1","Rated value (DC)":"24 V","Data length, max.":"2 kbyte; 1 472 bytes for UDP broadcast","H-Sync forwarding":"Yes","Integrated Switch":"Yes","Number of PtP CMs":"the number of connectable PtP CMs is only limited by the number of available slots","Repeat rate, min.":"1/s","Security policies":"Available security policies: None, Basic128Rsa15, Basic256Rsa15, Basic256Sha256","Forcing, variables":"peripheral inputs/outputs (without fail-safe)","High-speed counter":"Yes","PROFINET IO Device":"Yes","Per Priority Class":"24; Up to 8 possible for F-blocks","Retentivity preset":"No","PG/OP communication":"Yes; encryption with TLS V1.3 pre-selected","Prioritized startup":"Yes; Max. 32 PROFINET devices","User authentication":"\"anonymous\" or by user name & password","on Ethernet via NTP":"Yes","Direct data exchange":"Yes; Requirement: IRT and isochronous mode (MRPD optional)","HW functional status":"FS03","ISO-on-TCP (RFC1006)":"Yes","Inrush current, max.":"1.9 A; Rated value","Mode selector switch":"1","Number of IO modules":"1 024; max. number of modules / submodules","Password for display":"Yes","Per External Encoder":"80","Per Positioning Axis":"80","Per Synchronous Axis":"160","Screen diagonal [cm]":"3.45 cm","Integrated (For Data)":"1 Mbyte","Number of breakpoints":"8","Number of lines, max.":"1","Number of startup OBs":"100","Open IE communication":"Yes; Optionally also encrypted","SIL acc. to IEC 61508":"SIL 3","SIMATIC communication":"Yes","For Send Cycle Of 1 Ms":"1 ms to 512 ms","For Send Cycle Of 2 Ms":"2 ms to 512 ms","For Send Cycle Of 4 Ms":"4 ms to 512 ms","Modules per rack, max.":"32; CPU + 31 modules","Of Which In Line, Max.":"128","PROFINET IO Controller":"Yes","Retentivity adjustable":"Yes","Asset management record":"Yes; per user program","Deviation per day, max.":"10 s; Typ.: 2 s","Number of entries, max.":"1 000","Sampling interval, min.":"100 ms","Status/control variable":"Yes","User data per job, max.":"See online help (S7 communication, user data size)","For Bit Operations, Typ.":"60 ns","Integrated (For Program)":"225 kbyte","Number of DPV1 alarm OBs":"3","Number of clock memories":"8; 8 clock memory bit, grouped into one clock memory byte","Number of free cycle OBs":"100","Number of program alarms":"600","Number of sessions, max.":"32","Number of time alarm OBs":"20","Of Which Powerfail-Proof":"500","Per Priority Class, Max.":"64 kbyte; max. 16 KB per block","Runtime license required":"Yes","For Send Cycle Of 250 μS":"250 µs to 128 ms","For Send Cycle Of 500 μS":"500 µs to 256 ms","For Word Operations, Typ.":"72 ns","Number of delay alarm OBs":"20","Number of variables, max.":"200","Per Speed-Controlled Axis":"40","Publishing interval, min.":"500 ms","Application authentication":"Yes","Number of S7 routing paths":"16","Number of elements (total)":"4 000; Blocks (OB, FB, FC, DB) and UDTs","Number of connections, max.":"4","Number of process alarm OBs":"50","Reverse polarity protection":"Yes","S7 communication, as client":"Yes","S7 communication, as server":"Yes","Vertical Installation, Max.":"40 °C; Display: 40 °C, at an operating temperature of typically 40 °C, the display is switched off","Vertical Installation, Min.":"0 °C","SIMATIC memory card required":"Yes","Connection display LINK TX/RX":"Yes","Horizontal Installation, Max.":"60 °C; Display: 50 °C, at an operating temperature of typically 50 °C, the display is switched off","Horizontal Installation, Min.":"0 °C","Number of PROFINET interfaces":"1","Number of configurable Traces":"4; Up to 512 KB of data per trace are possible","Industrial Ethernet status LED":"Yes","MRP interconnection, supported":"Yes; as MRP ring node according to IEC 62439-2 Edition 3.0","Number of cyclic interrupt OBs":"20; With minimum OB 3x cycle of 500 µs","Number of diagnostic alarm OBs":"1","Number of isochronous mode OBs":"2","Number of server methods, max.":"20","Number of synchronous error OBs":"2","Of Which Status Variables, Max.":"200; per job","For Fixed Point Arithmetic, Typ.":"96 ns","Number of asynchronous error OBs":"4","Number of distributed IO systems":"32; A distributed I/O system is characterized not only by the integration of distributed I/O via PROFINET or PROFIBUS communication modules, but also by the connection of I/O via AS-i master modules or links (e.g. IE/PB-Link)","Of Which Control Variables, Max.":"200; per job","Current consumption (rated value)":"0.7 A","Infeed power to the backplane bus":"10 W","Number of server interfaces, max.":"10 of each \"Server interfaces\" / \"Companion specification\" type and 20 of the type \"Reference namespace\"","Number of subprocess images, max.":"32","Number of registerable nodes, max.":"10 000","Of which IO devices with IRT, max.":"64","Protection level: Write protection":"Yes; Specific write protection both for Standard and for Failsafe","For Floating Point Arithmetic, Typ.":"384 ns","Joint commission (Team Engineering)":"Yes; Parallel online access possible for up to 5 engineering systems","Number of IO Devices per tool, max.":"8","Plug-in (SIMATIC Memory Card), max.":"32 Gbyte","Switchover time on line break, typ.":"200 ms; For MRP, bumpless for MRPD","permissible range, lower limit (DC)":"19.2 V","permissible range, upper limit (DC)":"28.8 V","Number of accessible variables, max.":"50 000","Number of stations in the ring, max.":"50","activation/deactivation of I-devices":"Yes; per user program","Protection level: Complete protection":"Yes","Number of connectable IO Devices, max.":"128; In total, up to 256 distributed I/O devices can be connected via AS-i, PROFIBUS or PROFINET","Number of alarms for system diagnostics":"100","Number of slots for SIMATIC memory card":"1","Protection level: Read/write protection":"Yes","Mains/voltage failure stored energy time":"5 ms","Number of subscriptions per session, max.":"20","Number of technology synchronous alarm OBs":"2","Performance level according to ISO 13849-1":"PLe","Installation altitude above sea level, max.":"5 000 m; Restrictions for installation altitudes > 2 000 m, see manual","Number of monitored items, recommended max.":"1 000; for 1 s sampling interval and 1 s send interval","User program protection/password protection":"Yes","Number of configurable program messages, max.":"5 000; Program messages are generated by the \"Program_Alarm\" block, ProDiag or GRAPH","Number of connectable IO Devices for RT, max.":"128","Number of connections reserved for ES/HMI/web":"10","Number of alarms for motion technology objects":"80","Low demand mode: PFDavg in accordance with SIL3":"< 2.00E-05","Number of connections via integrated interfaces":"64","Several Passive Connections Per Port, Supported":"Yes","Number of inputs/outputs per server method, max.":"20","Number of loadable program messages in RUN, max.":"2 500","Number of IO Controllers with shared device, max.":"4","With IRT and parameterization of \"odd\" send cycles":"Update time = set \"odd\" send clock (any multiple of 125 µs: 375 µs, 625 µs ... 3 875 µs)","Power consumption from the backplane bus (balanced)":"5.5 W","Number of login stations for message functions, max.":"32","STEP 7 TIA Portal configurable/integrated from version":"V17 (FW V2.9) / V13 SP1 Update 4 (FW V1.8) or higher","High demand/continuous mode: PFH in accordance with SIL3":"< 1.00E-09","Number of nodes for user-defined server interfaces, max.":"1 000","Retentive data area (incl. timers, counters, flags), max.":"128 kbyte; In total; available retentive memory for bit memories, timers, counters, DBs, and technology data (axes): 88 KB","Number of nodes of the client interfaces, recommended max.":"1 000","Number of inputs/outputs when calling OPC_UA_MethodCall, max.":"20","Number of registerable method calls of OPC_UA_MethodCall, max.":"100","Extended retentive data area (incl. timers, counters, flags), max.":"1 Mbyte; When using PS 6 0W 24/48/60 V DC HF","Number of available Motion Control resources for technology objects":"800","Number of elements for one call of OPC_UA_MethodGetHandleList, max.":"100","Number of elements for one call of OPC_UA_NameSpaceGetIndexList, max.":"20","Number of positioning axes at motion control cycle of 4 ms (typical value)":"5","Number of positioning axes at motion control cycle of 8 ms (typical value)":"10","Number of IO Devices that can be simultaneously activated/deactivated, max.":"8; in total across all interfaces","Number of simultaneous calls of the client instructions for data access, per connection, max.":"5","Number of simultaneous calls of the client instructions for session management, per connection, max.":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1,492.25 – $1,562.00","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ce9ac6d45726561f85da09d9c983a054.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=578291&mlfb=6ES7511-1FK01-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7511-1FK01-0AB0/alternatives.json"},"ai":{"faq":[{"question":"What ambient temperature range does this CPU support?","answer":"The Siemens 6ES511-1FK01-0AB0 operates from -40°C to 70°C, covering cold storage and hot cabinet environments without additional heating or cooling."},{"question":"Which fail-safe programming languages are available?","answer":"LAD and FBD are supported for failsafe logic; standard logic can be written in LAD, FBD, SCL, STL, or GRAPH."},{"question":"What is the I/O process image size?","answer":"The CPU provides 32 kB of input process image and 32 kB of output process image, all of which are in the cyclic process image."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7511-1FK01-0AB0","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/6ES7511-1FK01-0AB0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}