{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7512-1SK01-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7512-1SK01-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7512-1SK01-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7512-1SK01-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-1500 fail-safe CPU, order code 6ES7512-1SK01-0AB0, with 32 Kbyte process image, PROFIsafe V2.4/V2.6, hardware clock, and PROFINET IRT.","salesMarkdown":"The 6ES7512-1SK01-0AB0 is a Siemens SIMATIC fail-safe CPU with a 32 kbyte I/O process image coverage – all inputs and outputs are in the image, so no need to worry about addressing holes for standard I/O. It supports PROFIsafe V2.4 and V2.6, FBD/LAD/SCL/STL/GRAPH programming including fail-safe extensions, so safe logic can be mixed with standard logic in the same CPU. Network interfaces are PROFINET with IRT, MRP, and MRPD, plus MODBUS TCP, HTTP/HTTPS for web server, and DNS/DCP for discovery and configuration – ready for line integration without an extra comm module. Onboard hardware clock with I&M data up to I&M3 supports consistent time-stamping and asset tracking across the plant network. Width 100 mm, height 117 mm, depth 75 mm – fits the standard single-width CPU format. Panel cutout matches the existing rail mount; no extra DIN-rail bracket needed. Forcing of outputs is supported in the non-fail-safe part of the program, giving the commissioning engineer override capability without disabling safety logic.","metaTitle":"Siemens 6ES7512-1SK01-0AB0 S7-1500 Fail-safe CPU, PROFIsafe","metaDescription":"S7-1500 fail-safe CPU with 32KB I/O process image, PROFIsafe V2.4/V2.6, hardware clock, PROFINET IRT, MODBUS TCP, and onboard PID control. Specified 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":"0.14 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","SNMP":"Yes","Type":"Hardware clock","Depth":"75 mm","GRAPH":"Yes","HTTPS":"Yes; Standard and user pages","Width":"100 mm","title":"6ES7512-1SK01-0AB0","Height":"117 mm","Inputs":"32 kbyte; All inputs are in the process image","MODBUS":"Yes; MODBUS TCP","Number":"16","RS 485":"Yes; Via CM DP module","TCP/IP":"Yes","Via CM":"0","Forcing":"Yes; without fail-safe","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, memory bits, DBs, distributed I/Os, timers, 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","description":"SIMATIC DP, CPU 1512SP F-1 PN for ET 200SP, Central processing unit with Work memory 300 KB for program and 1 MB for data, 1st interface: PROFINET IRT with 3-port switch, 48 ns bit performance, SIMATIC Memory Card required, BusAdapter required for Port 1 and 2","Autocrossing":"Yes","Equidistance":"No","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","to DP, slave":"Yes; Via CM DP module","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","to DP, master":"Yes; Via CM DP module","Motion Control":"Yes; Note: The number of technology objects affects the cycle time of the PLC program; selection guide via the TIA Selection Tool","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":"1","Weight, approx.":"310 g","lifecycle_stage":"current","Block protection":"Yes","Firmware version":"V2.9","Isochronous mode":"No","Maintenance-Free":"Yes","Media redundancy":"Yes; only via BusAdapter","Outputs (volume)":"8 kbyte","Power loss, typ.":"5.6 W","RJ 45 (Ethernet)":"Yes; X1 P3; opt. X1 P1 and X1 P2 via BusAdapter BA 2x RJ45","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","Optical interface":"Yes; via BusAdapter","PROFIBUS DP slave":"Yes","Security policies":"Available security policies: None, Basic128Rsa15, Basic256Rsa15, Basic256Sha256","Forcing, variables":"Peripheral inputs/outputs","High-speed counter":"Yes","PROFIBUS DP master":"Yes","PROFINET IO Device":"Yes","Per Priority Class":"24; Up to 8 possible for F-blocks","Retentivity preset":"No","Data record routing":"Yes","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":"FS05","ISO-on-TCP (RFC1006)":"Yes","Inrush current, max.":"4.7 A; Rated value","Mode selector switch":"1","Number of IO modules":"2 048; max. number of modules / submodules","Per External Encoder":"80","Per Positioning Axis":"80","Per Synchronous Axis":"160","BusAdapter (PROFINET)":"Yes; compatible BusAdapters: BA 2x RJ45, BA 2x FC, BA 2x M12","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.":"80; CPU + 64 modules + server module (mounting width max. 1 m) + 16 ET 200AL 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; without fail-safe","Transmission rate, max.":"12 Mbit/s","User data per job, max.":"See online help (S7 communication, user data size)","For Bit Operations, Typ.":"48 ns","Integrated (For Program)":"300 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","Current consumption, max.":"0.9 A","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.":"58 ns","Number of DP slaves, max.":"125; In total, up to 512 distributed I/O devices can be connected via AS-i, PROFIBUS or PROFINET","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.":"50 °C","Vertical Installation, Min.":"-25 °C; No condensation","SIMATIC memory card required":"Yes","Connection display LINK TX/RX":"Yes","Horizontal Installation, Max.":"60 °C","Horizontal Installation, Min.":"-25 °C; No condensation","Number of PROFIBUS interfaces":"1; Via CM DP module","Number of PROFINET interfaces":"1","Number of configurable Traces":"4; Up to 512 KB of data per trace are possible","Address space per module, max.":"288 byte; For input and output data respectively","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":"1","Number of server methods, max.":"20","Address space per station, max.":"2 560 byte; for central inputs and outputs; depending on configuration; 2 048 bytes for ET 200SP modules + 512 bytes for ET 200AL modules","Number of connections per CP/CM":"32","Number of synchronous error OBs":"2","Of Which Status Variables, Max.":"200; per job","For Fixed Point Arithmetic, Typ.":"77 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)":"0.6 A","Infeed power to the backplane bus":"8.75 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","For Floating Point Arithmetic, Typ.":"307 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","Activation/deactivation of DP slaves":"Yes","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 512 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","Monitoring of the supply voltage (PWR-LED)":"Yes","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","Quantity of operable ET 200AL modules, max.":"16","Quantity of operable ET 200SP modules, max.":"64","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","Protection Of Confidential Configuration Data":"Yes","Number of alarms for motion technology objects":"80","Low demand mode: PFDavg in accordance with SIL3":"< 2.00E-05","Module swapping during operation (hot swapping)":"Yes; Multi-hot swapping","Number of connections via integrated interfaces":"88","Protection level: Write protection for Failsafe":"Yes","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)","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; 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","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":"$876.30","stockQuantity":0,"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=578293&mlfb=6ES7512-1SK01-0AB0"},"ai":{"faq":[{"question":"How does this CPU handle network configuration on a PROFINET network?","answer":"It supports DCP (Discovery and Configuration Protocol) for automatic IP address assignment and DNS for hostname resolution, so you can drop it onto an existing managed network without a static IP pre-set."},{"question":"What safety protocol does the CPU support?","answer":"PROFIsafe V2.4 and V2.6, allowing connection to fail-safe I/O and meeting SIL requirements for safety applications."},{"question":"Can the CPU handle motion control with isochronous real-time?","answer":"Yes, it supports PROFINET IRT and MRPD, enabling isochronous real-time communication for synchronized motion axes."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7512-1SK01-0AB0","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/6ES7512-1SK01-0AB0 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}}