{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7151-7AA11-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7151-7AA11-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7151-7AA11-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7151-7AA11-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens IM151-7 CPU, 6ES7151-7AA11-0AB0, Profibus DP master/slave, 64 KB integrated work memory, DPV1, FBD/LAD/STL/SCL programming.","salesMarkdown":"## Panel fit and DP master role The 6ES7151-7AA11-0AB0 is an IM151-7 CPU module for the ET 200S distributed I/O system, mounting on the standard DIN rail in the interface module slot. Its width is 60 mm for the CPU module itself; the DP master module occupies 35 mm of that envelope. It operates as a Profibus DP master (DPV1) and also supports DP slave operation as a server, but not as a client. The RS-485 interface is isolated, with routing enabled for cross-network communication. ## Work memory and instruction capacity Integrated work memory is 64 kbyte, which the evidence states accommodates approximately 21 K instructions. Maximum user program size is 16 kbyte. The backup time for retentive data is 6 weeks at 40 °C ambient temperature. Input and output address space is 244 byte each, with a maximum of 256 byte for the overall process image. The module supports SYNC/FREEZE for deterministic DP cycle synchronization. ## Programming language support The CPU supports FBD, LAD, STL, and SCL (optional) programming languages under STEP 7. GRAPH is also available as an optional language. Single-step debugging and forcing of variables (inputs, outputs, memory bits, DBs, times, counters) are supported.","metaTitle":"Siemens 6ES7151-7AA11-0AB0 IM151-7, 64 KB Work Memory","metaDescription":"Siemens 6ES7151-7AA11-0AB0 IM151-7 CPU with 64 KB integrated work memory, DPV1, FBD/LAD/STL/SCL. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLC Communication Modules"],"specifications":{"FBD":"Yes","LAD":"Yes","MPI":"No","SCL":"Yes; Optional","STL":"Yes","DPV1":"Yes","Type":"SFB","Depth":"75 mm","GRAPH":"Yes; Optional","Width":"60 mm; DP master module: 35 mm","Height":"119.5 mm","Inputs":"244 byte","Number":"1","Preset":"150 ms","RS 485":"Yes","STEP 7":"Yes","Forcing":"Yes","Outputs":"244 byte","Overall":"12","Present":"Yes","Routing":"Yes","Isolated":"Yes","As Client":"No","As Server":"Yes","Retentive":"Yes; Must be restarted at each restart","Supported":"No","Variables":"Inputs, outputs, memory bits, DB, times, counters","Adjustable":"Yes","Expandable":"No","Integrated":"64 kbyte; approx. 21 K instructions","Size, max.":"16 kbyte","Backup time":"6 wk; At 40 °C ambient temperature, typically","Command set":"see instruction list","Granularity":"1 h","Lower Limit":"1 ms","SYNC/FREEZE":"Yes","Single step":"Yes","Upper Limit":"6 000 ms","Inputs, max.":"244 byte","Number, max.":"256 byte","Status block":"Yes","in AS, slave":"No","Outputs, max.":"244 byte","Plug-in (MMC)":"Yes","in AS, master":"No","to MPI, slave":"Yes","Interface type":"External interface via master module 6ES7138-4HA00-0AB0","Nesting levels":"8","to MPI, master":"Yes","Range of values":"0 to 2^31 hours (when using SFC 101)","Weight, approx.":"200 g; DP master module: Approx. 100 g","lifecycle_stage":"current","Firmware version":"V2.1","Isochronous mode":"No","Of Which Central":"124","Power loss, typ.":"3.3 W","Rated value (DC)":"24 V","S7 communication":"Yes","PROFIBUS DP slave":"Yes; active / passive","Address area, max.":"32","Forcing, variables":"Inputs, outputs","PROFIBUS DP master":"Yes","Per Priority Class":"8","Retentivity preset":"MB 0 to MB 15","Usable For Routing":"4; As slave only with active interface, with IM 151-7 CPU as DP master","Configuration rules":"max. 63 peripheral modules per station; station width < 1 m or < 2 m; max. 10 A per load group (power module); master interface module on right next to IM 151-7 CPU (X2 interface)","Number/Number range":"0","PG/OP communication":"Yes","Plug-in (MMC), max.":"8 Mbyte","Programming package":"STEP 7 V5.3 or higher","HW functional status":"01","Isolation tested with":"500 V DC","Number of breakpoints":"2","Number of connections":"12; Notice: 12 connections per CPU, not per interface","Number of startup OBs":"1; OB 100","Retentivity available":"Yes","S7 basic communication":"Yes","System functions (SFC)":"see instruction list","Deviation per day, max.":"10 s","Number of entries, max.":"100","Status/control variable":"Yes","Transmission rate, max.":"12 Mbit/s","User data per job, max.":"180 byte","For Bit Operations, Typ.":"0.1 µs","Number of blocks (total)":"1 024; FCs + FBs + DBs","Number of clock memories":"8; 1 memory byte","Number of free cycle OBs":"1; OB 1","Number of time alarm OBs":"1; OB 10","Per Priority Class, Max.":"510 byte","Short-circuit protection":"Yes","Size of GD packets, max.":"22 byte","For Word Operations, Typ.":"0.2 µs","Global data communication":"No","Number of DP slaves, max.":"32; Per station","Number of delay alarm OBs":"1; OB 20","Number of variables, max.":"10","Point-to-point connection":"No","Automatic Baud Rate Search":"Yes; only with passive interface","Hardware clock (real-time)":"Yes","Number of GD packets, max.":"4","Number of connections, max.":"12; Notice: 12 connections per CPU, not per interface","Number of process alarm OBs":"1; OB 40","Process diagnostic messages":"Yes; ALARM_S, ALARM_SC, ALARM_SQ","Reverse polarity protection":"Yes","S7 communication, as client":"No","S7 communication, as server":"Yes","usable for OP communication":"11","usable for PG communication":"11","Retentive And Synchronizable":"Yes","System function blocks (SFB)":"see instruction list","additional within an error OB":"4","from supply voltage 1L+, max.":"250 mA; 280 mA with DP master module","reserved for OP communication":"1","reserved for PG communication":"1","Number of cyclic interrupt OBs":"1; OB 35","Of Which Status Variables, Max.":"30","For Fixed Point Arithmetic, Typ.":"2 µs","Number of asynchronous error OBs":"1; OB 80","Of Which Control Variables, Max.":"14","User data per address area, max.":"32 byte; Up to max. size of the transfer memory","for backplane bus (5 V DC), max.":"700 mA","usable for S7 basic communication":"10","For Floating Point Arithmetic, Typ.":"3 µs","permissible range, lower limit (DC)":"20.4 V","permissible range, upper limit (DC)":"28.8 V","reserved for S7 basic communication":"0","Activation/deactivation of DP slaves":"Yes","Number of GD packets, receiver, max.":"4","Number of GD packets, transmitter, max.":"4","simultaneously active Alarm-S blocks, max.":"40","User program protection/password protection":"Yes","Size of GD packet (of which consistent), max.":"22 byte","User data per job (of which consistent), max.":"64 byte","Power supply to interface (15 to 30 V DC), max.":"No","Direct data exchange (slave-to-slave communication)":"Yes","Number of login stations for message functions, max.":"12; Depending on the configured connections for PG/OP and S7 basic communication","between PROFIBUS DP and all other circuit components":"Yes","Data management on MMC (after last programming), min.":"10 y","Between Load Voltage And All Other Switching Components":"Yes","Retentive data area (incl. timers, counters, flags), max.":"all"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$375.92","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/599fb3d3d8592ec955b0ddbf0a810439.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=171134&mlfb=6ES7151-7AA11-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7151-7AA11-0AB0/alternatives.json"},"ai":{"faq":[{"question":"What is the working memory of 6ES7151-7AA11-0AB0?","answer":"Integrated work memory is 64 kbyte, accommodating approximately 21 K instructions. Maximum user program size is 16 kbyte."},{"question":"How can I order the Siemens 6ES7151-7AA11-0AB0?","answer":"This module is sourced to order against your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7151-7AA11-0AB0","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/6ES7151-7AA11-0AB0 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}}