{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7151-8AB01-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7151-8AB01-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7151-8AB01-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7151-8AB01-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens IM 151-8 PN/DP CPU, 6ES7151-8AB01-0AB0, PROFINET interface with IRT, DPV1 master, 1021 I/O, 192 kbyte integrated memory.","salesMarkdown":"## Integration brief The 6ES7151-8AB01-0AB0: Programming is covered in LAD, FBD, STL, SCL, GRAPH, HiGraph, and CFC (the last two optional). CFC is listed as Yes; Optional, meaning the function blocks for continuous flow charts are available but not pre-loaded. The I²t rating of 0.13 A²·s is low — if you're coordinating overcurrent protection upstream, that figure tells you this module draws very little through-energy. It's not something you'll size a feeder breaker on, but it matters for fuse coordination in a multi-drop backplane. ## Field-fit notes Mounts in an ET 200S station; overall width is 120 mm — confirm the DP master module portion occupies 35 mm, so the rest is the CPU section. Depth is 75 mm, height 119.5 mm. The backplane bus supplies power; no separate 24V tap needed. PROFINET UDP and TCP/IP are accessible via loadable function blocks. MRP (Media Redundancy Protocol) is supported, which is useful for ring topologies if your line needs a redundant path. MPI is not present on this module — all communication is over PROFINET and RS-485. Retentive data must be restarted at each restart; the preset is no retentivity, so plan your keep-variables in the DB setup. Forcing is supported — handy on a commissioning trip when a sensor is stuck and you need to override the input.","metaTitle":"6ES7151-8AB01-0AB0 IM 151-8 PN/DP CPU, IRT","metaDescription":"Siemens 6ES7151-8AB01-0AB0 IM 151-8 PN/DP CPU for ET 200S. PROFINET IRT, DPV1 master, 1021 I/O, 192 kbyte memory. Sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLC Communication Modules"],"specifications":{"CFC":"Yes; Optional","FBD":"Yes","I2t":"0.13 A²·s","IRT":"Yes","LAD":"Yes","MPI":"No","MRP":"Yes","SCL":"Yes; Optional","STL":"Yes","UDP":"Yes; via integrated PROFINET interface and loadable FBs","DPV1":"Yes","Type":"SFB","Depth":"75 mm","GRAPH":"Yes; Optional","Width":"120 mm; DP master module: 35 mm","title":"6ES7151-8AB01-0AB0","Alarms":"Yes","Height":"119.5 mm","Inputs":"1 021","Number":"1","Preset":"No retentivity","RS 485":"Yes","STEP 7":"Yes; V5.5 or higher","TCP/IP":"Yes; via integrated PROFINET interface and loadable FBs","Forcing":"Yes","Outputs":"1 021","Overall":"12","Present":"Yes","Routing":"Yes","Isolated":"Yes","As Client":"Yes; via integrated PROFINET interface and loadable FBs","As Server":"Yes","HiGraph®":"Yes; Optional","Retentive":"Yes; Must be restarted at each restart","Supported":"Yes","Variables":"Inputs, outputs, memory bits, DB, times, counters","Adjustable":"Yes","Expandable":"No","Integrated":"192 kbyte","Size, max.":"256 byte","Web server":"No","Backup time":"6 wk; At 40 °C ambient temperature, typically","Command set":"see instruction list","Granularity":"1 h","Lower Limit":"1 ms","PROFIenergy":"Yes; With SFB 73 / 74 prepared for loadable PROFIenergy standard FB for I-Device","SYNC/FREEZE":"Yes","Send cycles":"250 μs, 500 μs,1 ms; 2 ms, 4 ms (not in the case of IRT with \"high flexibility\" option)","Single step":"Yes","Upper Limit":"6 000 ms","description":"SIMATIC DP, IM151-8 PN/DP CPU f. ET200S, 192 KB work memory, int. PROFINET interface (with three RJ45 ports) as IO controller,without battery MMC required","Autocrossing":"Yes","Equidistance":"Yes","Inputs, max.":"244 byte","Number, max.":"64","PROFINET CBA":"No","Status block":"Yes; Up to 2 simultaneously","in AS, slave":"No","to DP, slave":"Yes; With DP master module","Outputs, max.":"244 byte","Plug-in (MMC)":"Yes","Shared device":"Yes","Updating time":"Minimum value depends on communication share set for PROFINET I/O, on the number of I/O devices, and on the number of configured user data items.","in AS, master":"No","to DP, master":"Yes; With DP master module","to MPI, slave":"No","Interface type":"External interface via master module 6ES7138-4HA00-0AB0","Nesting levels":"8","Updating times":"250 µs to 512 ms (depends on operating mode; for more details, refer to Operating Instructions, \"Interface Module IM151-8 PN/DP CPU\")","to MPI, master":"No","Autonegotiation":"Yes","For Maintenance":"Yes; MT","Inputs, default":"128 byte","Number of ports":"3; RJ45","Range of values":"0 to 2^31 hours (when using SFC 101)","Weight, approx.":"320 g; DP master module: Approx. 100 g","lifecycle_stage":"current","Block encryption":"Yes; With S7 block Privacy","Firmware version":"V3.2","Isochronous mode":"No","Of Which Central":"124","Outputs, default":"128 byte","Power loss, typ.":"5.5 W","RJ 45 (Ethernet)":"Yes","Rated value (DC)":"24 V","S7 communication":"Yes","Data length, max.":"1 472 byte","Integrated Switch":"Yes","PROFIBUS DP slave":"No","Bus fault BF (red)":"Yes; BF-PN","Forcing, variables":"I/O","Inputs, adjustable":"2 048 byte","PROFIBUS DP master":"Yes","PROFINET IO Device":"No","Per Priority Class":"16","Retentivity preset":"Yes","Usable For Routing":"4; With DP master module","Cyclic Transmission":"Yes","Data record routing":"Yes; With DP master module","Interfaces/bus type":"1x PROFINET (3 RJ45 ports)","Number/Number range":"0","Outputs, adjustable":"2 048 byte","PG/OP communication":"Yes","Plug-in (MMC), max.":"8 Mbyte","Prioritized startup":"Yes","Programming package":"as of STEP 7 V5.5 or as of STEP 7 TIA Portal V11","on Ethernet via NTP":"Yes; As client","Acyclic Transmission":"Yes","Diagnostics function":"Yes","Group error SF (red)":"Yes","HW functional status":"01","ISO-on-TCP (RFC1006)":"Yes; via integrated PROFINET interface and loadable FBs","Inrush current, typ.":"1.8 A","Isolation tested with":"500 V DC","Number of breakpoints":"4","Number of startup OBs":"1; OB 100","Open IE communication":"No","Retentivity available":"Yes","User-defined websites":"Yes","Number of HTTP clients":"5","Of Which In Line, Max.":"128","PROFINET IO Controller":"No","Retentivity adjustable":"Yes; via non-retain property on DB","S7 basic communication":"Yes; I blocks only","System functions (SFC)":"see instruction list","Deviation per day, max.":"10 s; Typ.: 2 s","IP degree of protection":"IP20","Number of entries, max.":"500","Status/control variable":"Yes","Transmission rate, max.":"12 Mbit/s","User data per job, max.":"See online help of STEP 7 (shared parameters of the SFBs/FBs and of the SFCs/FCs of S7 Communication)","For Bit Operations, Typ.":"0.06 µs","Number of DPV1 alarm OBs":"3; OB 55, 56, 57","Number of blocks (total)":"1 024; (DBs, FCs, FBs); the maximum number of loadable blocks can be reduced by the MMC used.","Number of clock memories":"8; 1 memory byte","Number of free cycle OBs":"1; OB 1","Number of time alarm OBs":"1; OB 10","Of Which Powerfail-Proof":"100; Only the last 100 entries are retained","Per Priority Class, Max.":"32 768 byte; Max. 2048 bytes per block","For Word Operations, Typ.":"0.12 µs","Global data communication":"No","Number of DP slaves, max.":"32; Per station","Number of delay alarm OBs":"2; OB 20, 21","Number of variables, max.":"10","Point-to-point connection":"No","Hardware clock (real-time)":"Yes","Number of connections, max.":"8","Number of process alarm OBs":"1; OB 40","Process diagnostic messages":"Yes; ALARM_S, ALARM_SC, ALARM_SQ, ALARM_D, ALARM_DQ","Reverse polarity protection":"Yes; against destruction","S7 communication, as client":"No","S7 communication, as server":"Yes","User data consistency, max.":"1 024 byte; with PROFINET I/O","usable for OP communication":"11","usable for PG communication":"11","usable for S7 communication":"10; with loadable FBs","Retentive And Synchronizable":"Yes","System function blocks (SFB)":"see instruction list","Bus activity PROFINET (green)":"Yes; P1-/P2-/P3-Link","Length of mounting rail, max.":"Station width: ≤ 1 m or < 2 m","User data per submodule, max.":"1 024 byte","additional within an error OB":"4","from supply voltage 1L+, max.":"352 mA; 426 mA with DP master module","reserved for OP communication":"1","reserved for PG communication":"1","Cycle Monitoring Time / Preset":"150 ms","Number of cyclic interrupt OBs":"4; OB 32, 33, 34, 35","Number of isochronous mode OBs":"1; OB 61; only for PROFINET","Number of synchronous error OBs":"2; OB 121, 122","Of Which Status Variables, Max.":"30","Total Number Of Instances, Max.":"32","For Fixed Point Arithmetic, Typ.":"0.16 µs","Number of asynchronous error OBs":"6; OB 80, 82, 83, 85, 86, 87 (OB83 only for centralized I/O and PROFINET IO)","Of Which Control Variables, Max.":"14","for backplane bus (5 V DC), max.":"700 mA","Number of subprocess images, max.":"1; With PROFINET IO, the length of the user data is limited to 1600 bytes","usable for S7 basic communication":"10","Number of modules per system, max.":"63; Centralized","Of which IO devices with IRT, max.":"64","For Floating Point Arithmetic, Typ.":"0.59 µs","Number of IO Devices per tool, max.":"8","Switchover time on line break, typ.":"200 ms; PROFINET MRP","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 stations in the ring, max.":"50","Activation/deactivation of IO Devices":"Yes","Output current of the interface, max.":"No","adjustable for OP communication, max.":"11","adjustable for OP communication, min.":"1","adjustable for PG communication, max.":"11","adjustable for PG communication, min.":"1","adjustable for S7 communication, max.":"10","Device replacement without swap medium":"Yes","Number of connectable IO Devices, max.":"128","Setpoint for the CPU communication load":"50 %","Automatic Detection Of Transmission Rate":"Yes","Behavior of the clock following POWER-ON":"Clock continues running after POWER OFF","Mains/voltage failure stored energy time":"5 ms","Data length for connection type 01H, max.":"1 460 byte","Data length for connection type 11H, max.":"32 768 byte","Local port numbers used at the system end":"0, 20, 21, 23, 25, 80, 102, 135, 161, 443, 8080, 34962, 34963, 34964, 65532, 65533, 65534, 65535","Monitoring 24 V voltage supply ON (green)":"Yes","Number of mounting rails that can be used":"1","Change of IP address at runtime, supported":"Yes","simultaneously active Alarm-S blocks, max.":"300","User program protection/password protection":"Yes","adjustable for S7 basic communication, max.":"10","adjustable for S7 basic communication, min.":"0","Number of connectable IO Devices for RT, max.":"128","User data per job (of which consistent), max.":"76 byte","Several Passive Connections Per Port, Supported":"Yes","Number of IO Controllers with shared device, max.":"2","Direct data exchange (slave-to-slave communication)":"Yes","Number of IO devices with prioritized startup, max.":"32","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 a","Behavior of the clock following expiry of backup period":"the clock continues at the time of day it had when power was switched off","number of remote connection partners / with PROFINET CBA":"32","Retentive data area (incl. timers, counters, flags), max.":"64 kbyte","External Protection For Power Supply Lines (Recommendation)":"2 A min.","IO Devices changing during operation (partner ports), supported":"Yes","Number of IO Devices with IRT and the option \"high flexibility\"":"128","number of coupled PROFIBUS devices / with PROFIBUS functionality":"16","Number of DP slaves that can be simultaneously activated/deactivated, max.":"8","Number of IO Devices that can be simultaneously activated/deactivated, max.":"8"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$777.77","stockQuantity":0,"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=423311&mlfb=6ES7151-8AB01-0AB0"},"ai":{"faq":[{"question":"What programming languages does the 6ES7151-8AB01-0AB0 support?","answer":"Standard IEC languages: LAD (ladder), FBD (function block diagram), STL (statement list), SCL (structured text), GRAPH (sequential function chart), HiGraph® (graphic state machine), and CFC (continuous function chart, optional)."},{"question":"What is the PROFINET capability of this CPU?","answer":"It supports PROFINET IO with IRT (isochronous real-time) for deterministic communication, DPV1 master for fieldbus integration, UDP/TCP via loadable FBs, and MRP for media redundancy. MPI is not available."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7151-8AB01-0AB0","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/6ES7151-8AB01-0AB0 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}}