{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6AG1315-2EH14-7AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6AG1315-2EH14-7AB0","canonicalUrl":"https://aoctrl.com/siemens/6AG1315-2EH14-7AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6AG1315-2EH14-7AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIPLUS S7-300 CPU 315-2 PN/DP, 6AG1315-2EH14-7AB0, FM 8, 244 byte I/O, PROFINET IRT, -40 to 70 °C, ATEX.","salesMarkdown":"## FM 8 — what it means for the build The 6AG1315-2EH14-7AB0: The FM 8 designation on this CPU refers to the firmware and memory configuration — it defines the function block capacity and the operating system version, not the processing speed. If the existing program was built on an earlier FM version, the migration path is straightforward, but the firmware must match what the engineering station expects. ## Programming languages — all of them This CPU supports LAD, FBD, STL, SCL, GRAPH, HiGraph, and CFC — every IEC 61131-3 language plus Siemens' own high-level tools. That means a team mixing ladder for the safety circuit and SCL for the math blocks can all target the same processor without a translation layer. ## Temperature range tells the story Rated from -40 °C to 70 °C ambient, this is the SIPLUS variant — the same CPU logic as the standard 315-2 PN/DP, but with conformal coating and wider-tolerance components for unheated enclosures, cold stores, or outdoor cabinets. The standard version tops out at 60 °C; this one keeps running where the standard would flag a temperature fault. ## ATEX and CE — compliance in one package Carries ATEX certification for Zone 2 (gas) and Zone 22 (dust) areas, plus CE marking for EU machinery directive compliance. For a panel going into a potentially explosive atmosphere, this CPU saves having to segregate the controller into a purged enclosure — the certification is on the nameplate. ## PROFINET with IRT — deterministic motion Integrated PROFINET interface with IRT (isochronous real-time) support means this CPU can close a position loop over the network — think multi-axis gantries or synchronized conveyors where jitter matters. Also handles TCP/IP and UDP via the same port, so standard IT traffic coexists with the real-time channel. ## Process image — 244 bytes each way The CPU addresses 244 bytes of process input image and 244 bytes of process output image. That's the data exchanged each cycle with the I/O — not the physical I/O count. For a line-down spare, confirm the existing configuration fits within this image size; if the old CPU had a larger image, the program needs a recompile. ## No PROFIsafe — this is standard safety, not failsafe This CPU is type SFB (standard function block) and explicitly has no PROFIsafe capability. If the application needs a safety-rated controller that communicates over PROFIsafe to distributed safety I/O, this is the wrong CPU — you'd need a failsafe variant like the CPU 315F. For standard logic with a separate safety relay or safety PLC, this works fine.","metaTitle":"Siemens 6AG1315-2EH14-7AB0 SIPLUS CPU, FM 8, -40 to 70°C","metaDescription":"Siemens 6AG1315-2EH14-7AB0 SIPLUS S7-300 CPU, 244 byte I/O, PROFINET IRT, ATEX, -40 to 70°C. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"FM":"8","CFC":"Yes","FBD":"Yes","I2t":"1 A²·s","IRT":"Yes","LAD":"Yes","MPI":"No","SCL":"Yes","STL":"Yes","UDP":"Yes; via integrated PROFINET interface and loadable FBs","ATEX":"Yes","DPV1":"No","Max.":"70 °C","Min.":"-40 °C","Type":"SFB","Depth":"130 mm","GRAPH":"Yes","Width":"40 mm","title":"6AG1315-2EH14-7AB0","Height":"125 mm","Inputs":"244 byte","Number":"1","Preset":"10","RS 485":"Yes","STEP 7":"Yes; V5.5 or higher","TCP/IP":"Yes; via integrated PROFINET interface and loadable FBs","via CP":"4","CE mark":"Yes","CP, LAN":"10","CP, PtP":"8","Forcing":"Yes","Outputs":"244 byte","Overall":"16","Present":"Yes","Routing":"Yes","Isolated":"Yes","As Client":"Yes; via integrated PROFINET interface and loadable FB or via CP and loadable FB","As Server":"Yes","HiGraph®":"Yes","PROFIsafe":"No","Retentive":"Yes; Must be restarted at each restart","Supported":"Yes; via CP and loadable FC","Variables":"Inputs, outputs, memory bits, DB, times, counters","Adjustable":"Yes; From 10 to 499","Expandable":"No","Integrated":"1","Size, max.":"2 048 byte","Web server":"Yes","Backup time":"6 wk; At 40 °C ambient temperature","Command set":"see instruction list","Granularity":"1 h","KC approval":"Yes","Lower Limit":"10 ms","PROFIenergy":"Yes; With SFB 73 / 74 prepared for loadable PROFIenergy standard FB for I-Device","Racks, max.":"4","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","UL approval":"Yes; File E239877","Upper Limit":"9 990 s","description":"SIPLUS S7-300 CPU 315-2PN/DP based on 6ES7315-2EH14-0AB0 with conformal coating, -25…+70 °C, central processing unit with 384 KB work memory, 1st interface MPI/DP 12 Mbps, 2nd interface Ethernet PROFINET, with 2-port switch, Micro Memory Card required","Autocrossing":"Yes","Equidistance":"Yes","Inputs, max.":"1 440 byte; Per IO Controller with shared device","Number, max.":"64","PROFINET CBA":"Yes","Status block":"Yes; Up to 2 simultaneously","in AS, slave":"Yes","to DP, slave":"Yes","Outputs, max.":"1 440 byte; Per IO Controller with shared device","Plug-in (MMC)":"Yes","Shared device":"Yes","Updating time":"250 µs to 512 ms (depending on the operating mode, see Manual \"S7-300 CPU 31xC and CPU 31x, technical Data\" for more details)","in AS, master":"Yes","to DP, master":"Yes; With DP slave only slave clock","to MPI, slave":"Yes","Interface type":"PROFINET","Nesting levels":"8","to MPI, master":"Yes","Autonegotiation":"Yes","Can Be Read Out":"Yes","Inputs, default":"128 byte","Number of ports":"2","Range of values":"0 to 2^31 hours (when using SFC 101)","Weight, approx.":"340 g","Without Battery":"Yes; Program and data","lifecycle_stage":"current","Block encryption":"Yes; With S7 block Privacy","Isochronous mode":"No","Media redundancy":"Yes","Of Which Central":"256","Outputs, default":"128 byte","Power loss, typ.":"4.65 W","RJ 45 (Ethernet)":"Yes","Rated value (DC)":"24 V","S7 communication":"Yes; With loadable FBs, max. configurable connections: 14, max. number of instances: 32","Data length, max.":"1 472 byte","Integrated Switch":"Yes","PROFIBUS DP slave":"No","Repeat rate, min.":"1 s","Address area, max.":"32","Forcing, variables":"Inputs, outputs","Inputs, adjustable":"2 048 byte","PROFIBUS DP master":"No","PROFINET IO Device":"Yes; Also simultaneously with IO Controller functionality","Per Priority Class":"16","Retentivity preset":"Yes","Usable For Routing":"X1 as MPI: max. 10; X1 as DP master: max. 24; X1 as DP slave (active): max. 14; X2 as PROFINET: 24 max.","Cyclic Transmission":"Yes","Data record routing":"Yes","Number/Number range":"0","Outputs, adjustable":"2 048 byte","PG/OP communication":"Yes","Plug-in (MMC), max.":"8 Mbyte","Prioritized startup":"Yes","Programming package":"STEP 7 V5.5 or higher","on Ethernet via NTP":"Yes; As client","Acyclic Transmission":"Yes","ISO-on-TCP (RFC1006)":"Yes; via integrated PROFINET interface and loadable FBs","Inrush current, typ.":"4 A","EAC (formerly Gost-R)":"Yes","Number of breakpoints":"4","Number of startup OBs":"1; OB 100","Open IE communication":"Yes; Via TCP/IP, ISO on TCP, and UDP","RCM (formerly C-TICK)":"Yes","Retentivity available":"Yes; MB 0 to MB 2 047","User-defined websites":"Yes","Modules per rack, max.":"8","Number of HTTP clients":"5","Of Which In Line, Max.":"128","PROFINET IO Controller":"Yes; Also simultaneously with IO-Device functionality","Retentivity adjustable":"Yes; via non-retain property on DB","S7 basic communication":"No","System functions (SFC)":"see instruction list","Deviation per day, max.":"10 s; Typ.: 2 s","Number of analog inputs":"0","Number of entries, max.":"500","Status/control variable":"Yes","Transmission rate, max.":"100 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.":"0.05 µs","Number of DPV1 alarm OBs":"3; OB 55, 56, 57","Number of GD loops, max.":"8","Number of analog outputs":"0","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 digital inputs":"0","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","Size of GD packets, max.":"22 byte","For Word Operations, Typ.":"0.09 µs","Global data communication":"No","Number of DP slaves, max.":"124","Number of delay alarm OBs":"2; OB 20, 21","Number of digital outputs":"0","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.":"8","Number of RS 422 interfaces":"0","Number of RS 485 interfaces":"1; Combined MPI / PROFIBUS DP","Number of connections, max.":"8","Number of process alarm OBs":"1; OB 40","Process diagnostic messages":"Yes","S7 communication, as client":"No","S7 communication, as server":"Yes; Connection configured on one side only","User data consistency, max.":"1 024 byte","usable for OP communication":"15","usable for PG communication":"15","usable for S7 communication":"14","Retentive And Synchronizable":"Yes","System function blocks (SFB)":"see instruction list","Number of PROFINET interfaces":"1; 2 ports (switch) RJ45","User data per submodule, max.":"1 024 byte","additional within an error OB":"4","reserved for OP communication":"1","reserved for PG communication":"1","reserved for S7 communication":"0","Keep-alive function, supported":"Yes","Number of cyclic interrupt OBs":"4; OB 32, 33, 34, 35","Number of isochronous mode OBs":"1; OB 61","Number of expansion units, max.":"3","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.":"0.12 µs","Number of asynchronous error OBs":"6; OB 80, 82, 83, 85, 86, 87 (OB83 only for PROFINET IO)","Of Which Control Variables, Max.":"14","User data per address area, max.":"32 byte","Current consumption (rated value)":"750 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":"14","Of which IO devices with IRT, max.":"64","For Floating Point Arithmetic, Typ.":"0.45 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 GD packets, receiver, max.":"8","Number of stations in the ring, max.":"50","Activation/deactivation of IO Devices":"Yes","Output current of the interface, max.":"200 mA","adjustable for OP communication, max.":"15","adjustable for OP communication, min.":"1","adjustable for PG communication, max.":"15","adjustable for PG communication, min.":"1","adjustable for S7 communication, max.":"14","adjustable for S7 communication, min.":"0","Device replacement without swap medium":"Yes","Number of connectable IO Devices, max.":"128","Number of GD packets, transmitter, max.":"8","Number of entries readable in RUN, max.":"499","Setpoint for the CPU communication load":"50 %","Automatic Detection Of Transmission Rate":"Yes; 10/100 Mbit/s","Behavior of the clock following POWER-ON":"Clock continues running after POWER OFF","Mains/voltage failure stored energy time":"5 ms","Number of industrial Ethernet interfaces":"1; 2 ports (switch) RJ45","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, 25, 80, 102, 135, 161, 8080, 34962, 34963, 34964, 65532, 65533, 65534, 65535","Change of IP address at runtime, supported":"Yes","simultaneously active Alarm-S blocks, max.":"300","Installation altitude above sea level, max.":"5 000 m","User program protection/password protection":"Yes","adjustable for S7 basic communication, max.":"14","adjustable for S7 basic communication, min.":"0","Number of connectable IO Devices for RT, max.":"128","Size of GD packet (of which consistent), max.":"22 byte","User data per job (of which consistent), max.":"76 byte; 76 bytes (with X_SEND or X_RCV); 64 bytes (with X_PUT or X_GET as server)","Several Passive Connections Per Port, Supported":"Yes","Current consumption (in no-load operation), typ.":"150 mA","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","Ambient air temperature-barometric pressure-altitude":"Tmin ... Tmax at 1 140 hPa ... 795 hPa (-1 000 m ... +2 000 m) // Tmin ... (Tmax - 10 K) at 795 hPa ... 658 hPa (+2 000 m ... +3 500 m) // Tmin ... (Tmax -20 K) at 658 hPa ... 540 hPa (+3 500 m ... +5 000 m)","Number of login stations for message functions, max.":"16; Depending on the configured connections for PG/OP and S7 basic communication","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.":"128 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","Environmental conditions for process, measuring and control systems acc. to ANSI/ISA-71.04":"Yes; Level GX group A/B (excluding trichlorethylene; harmful gas concentrations up to the limits of EN 60721-3-3 class 3C4 permissible); level LC3 (salt spray) and level LB3 (oil)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2,730.50","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/9660a32b9104830998a4e07eb0689be4.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=262186&mlfb=6AG1315-2EH14-7AB0"},"ai":{"faq":[{"question":"What is 6AG1315-2EH14-7AB0's listed FM?","answer":"The FM (firmware/memory) designation is 8. This defines the function block capacity and operating system version — not the processing speed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6AG1315-2EH14-7AB0","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/6AG1315-2EH14-7AB0 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}}