{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7511-1AL03-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7511-1AL03-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7511-1AL03-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7511-1AL03-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-1500, Standard CPU, 6ES7511-1AL03-0AB0, -40 to 70 °C, 35 x 147 x 129 mm, PROFINET IRT, MRP, MODBUS TCP.","salesMarkdown":"## CPU Overview – S7-1500 Standard Controller The Siemens 6ES7511-1AL03-0AB0 is a standard CPU in the SIMATIC S7-1500 family. It integrates PROFINET IRT for deterministic real-time communication, MRP Manager (conforming to IEC 62439-2) for media redundancy, and MODBUS TCP for easy integration with third-party devices. Onboard PID controllers with integrated optimization handle temperature and valve loops without an external controller. The process image supports 32 kbyte for inputs and 32 kbyte for outputs, accommodating a substantial amount of I/O data per cycle without needing an external communication processor for data exchange. ## Environmental & Mounting – Fit for Harsh Plant Floor The 35 mm width fits standard S7-1500 rail profiles; depth is 129 mm and height 147 mm. Front gland plate clearance should respect the wiring space for the integrated PROFINET port and optional communication modules. ## Protocols & Diagnostics – What’s Onboard Standard protocols: TCP/IP, UDP, DHCP, DNS, LLDP, SNMP, and HTTP/HTTPS for user-defined web pages. MRP Automanager handles ring redundancy; MRPD requires IRT activation. I&M data from I&M0 to I&M3 are supported for asset management. Diagnostic LEDs for ERROR and MAINT give immediate status at the panel. The hardware clock keeps time across power cycles. PROFIsafe (fail-safe) is not integrated — for safety applications use an F-CPU.","metaTitle":"Siemens 6ES7511-1AL03-0AB0 SIMATIC S7-1500 CPU, -40-70°C","metaDescription":"Siemens 6ES7511-1AL03-0AB0 standard CPU for S7-1500. Supports IRT, MRP, MODBUS TCP. 32 kB process image I/O. -40 to 70 °C. Source to RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"DCP":"Yes","DNS":"Yes","FBD":"Yes","I2t":"0.5 A²·s","IRT":"Yes","LAD":"Yes","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","title":"6ES7511-1AL03-0AB0","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","Forcing":"Yes","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":"No","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 S7-1500, CPU 1511-1 PN, central processing unit with work memory 300 KB for program and 1.5 MB for data, 1st interface: PROFINET IRT with 2-port switch, 25 ns bit performance, SIMATIC Memory Card required **** approvals and certificate according to entry 109815653 at support.industry.siemens.com to be observed! ****","Autocrossing":"Yes","Mode buttons":"2","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; Data Access (registered Read/Write), Method Call","OPC UA Server":"Yes; Data Access (Read, Write, Subscribe), Method Call, Alarms & Condition (A&C), Custom Address Space","Per Cam Track":"160","Shared device":"Yes","UDP multicast":"Yes; max. 78 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":"8","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","STOP ACTIVE LED":"Yes","Weight, approx.":"336 g","lifecycle_stage":"current","Block protection":"Yes","Firmware version":"V3.0","Isochronous mode":"No","Maintenance-Free":"Yes","Media redundancy":"only via 1st interface (X1)","Outputs (volume)":"8 kbyte","Power loss, typ.":"7.5 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, Aes128Sha256RsaOaep, Aes256Sha256RsaPss","Forcing, variables":"Peripheral inputs/outputs","High-speed counter":"Yes","PROFINET IO Device":"Yes","Per Priority Class":"24","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":"FS01","ISO-on-TCP (RFC1006)":"Yes","Inrush current, max.":"1.15 A; Rated value","Number of IO modules":"2 048; 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","Alarms and Conditions":"Yes","Integrated (For Data)":"1.5 Mbyte","Number of breakpoints":"8","Number of lines, max.":"1","Number of startup OBs":"100","Open IE communication":"Yes; Optionally also encrypted","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.":"25 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; \"Small\" license required","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.":"32 ns","Number of delay alarm OBs":"20","Number of variables, max.":"200","Per Speed-Controlled Axis":"40","Publishing interval, min.":"200 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.":"-30 °C; No condensation","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.":"-30 °C; No condensation","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 250 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.":"42 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)":"0.73 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","For Floating Point Arithmetic, Typ.":"170 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 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.":"50","Number of technology synchronous alarm OBs":"2","Installation altitude above sea level, max.":"5 000 m; Restrictions for installation altitudes > 2 000 m, see manual","Number of monitored items, recommended max.":"4 000; 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","Protection Of Confidential Configuration Data":"Yes","Number of alarms for motion technology objects":"160","Number of connections via integrated interfaces":"88","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":"V18 (FW V3.0); with older TIA Portal versions configurable as 6ES7511-1AK02-0AB0","Number of nodes for user-defined server interfaces, max.":"15 000","Retentive data area (incl. timers, counters, flags), max.":"256 kbyte; in total; available retentive memory for bit memories, timers, counters, DBs, and technology data (axes): 216 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.":"1.5 Mbyte; When using PS 6 0W 24/48/60 V DC HF","Number of available Motion Control resources for technology objects":"1 120","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)":"11","Number of positioning axes at motion control cycle of 8 ms (typical value)":"14","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":"$496.57 – $1,104.94","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=1647412&mlfb=6ES7511-1AL03-0AB0"},"ai":{"faq":[{"question":"What is the DCP (Device Configuration Protocol) support of the 6ES7511-1AL03-0AB0?","answer":"DCP is supported (Yes). It enables device identification and assignment of IP parameters via PROFINET without a separate configuration tool."},{"question":"What is the DNS (Domain Name System) support of the 6ES7511-1AL03-0AB0?","answer":"DNS is supported (Yes). The CPU can resolve hostnames for network communication, simplifying integration with IT infrastructure."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7511-1AL03-0AB0","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/6ES7511-1AL03-0AB0 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}}