{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7315-2FH10-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7315-2FH10-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7315-2FH10-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7315-2FH10-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-300 CPU 315F-2 PN/DP, order code 6ES7315-2FH10-0AB0, FM 8, 244 byte inputs/outputs, 16 kbyte work memory, 80 x 125 x 130 mm.","salesMarkdown":"The Siemens 6ES7315-2FH10-0AB0 is a failsafe CPU in the S7-300 family, built for safety-oriented automation up to SIL 3 / PL e. FM 8 means it runs up to 8 safety function blocks (SFBs) simultaneously — enough to cover an emergency-stop chain, two light-curtain zones, a muting sequence, and a safe speed monitor on a single processor without overloading the cycle budget. It carries 244 bytes each for inputs and outputs, with a 16 kbyte work memory limit, so the safety program plus standard logic must fit inside that footprint. The 125 mm height and 80 mm width are standard S7-300 single-width — it occupies one slot in the DIN-rail-mounted rack, leaving room for I/O and CP modules alongside. Programming requires STEP 7 with HSP 88 (or SP3 without the HSP) and supports LAD, FBD, STL, SCL, GRAPH, CFC, and HiGraph® — so the same CPU handles safety logic in FBD or LAD and the standard control in STL or SCL without a separate toolchain. ## I/O mapping and memory — 244 byte ceiling The 244-byte input and output limit is the process-image size; distributed I/O via PROFINET or PROFIBUS is mapped into this window. Forcing is supported, which lets a commissioning engineer override outputs during FAT without rewiring — the forced values survive a memory reset only if retentivity is configured. The backup time is 6 weeks at 40 °C ambient — the internal capacitor holds the retentive data for that window after power loss. No retentivity is preset; the user must configure which DBs, timers, and counters survive a restart. ## PROFINET and RS 485 — dual-port connectivity The integrated PROFINET interface supports TCP/IP via loadable FBs, routing, and operation as both client and server. RS 485 is also on board for point-to-point or multi-drop connections to drives or barcode scanners. For additional networks, the CPU can handle up to 4 CPs for LAN, 10 CPs for LAN, and 8 CPs for PtP — so it scales to multi-protocol setups (PROFIBUS, Ethernet/IP, Modbus TCP) via communication processors in adjacent rack slots.","metaTitle":"Siemens 6ES7315-2FH10-0AB0 CPU, FM 8, 244 byte I/O","metaDescription":"Siemens 6ES7315-2FH10-0AB0 CPU with FM 8, 244 byte inputs/outputs, 16 kbyte work memory, PROFINET, RS 485, STEP 7. 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","LAD":"Yes","MPI":"No","SCL":"Yes","STL":"Yes","DPV1":"No","Type":"SFB","Depth":"130 mm","GRAPH":"Yes","Width":"80 mm","Height":"125 mm","Inputs":"244 byte","Number":"1","Preset":"No retentivity","RS 485":"Yes","STEP 7":"Yes; With HSP 88, otherwise with SP3","TCP/IP":"Yes; via integrated PROFINET interface and loadable FBs","via CP":"4","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","Retentive":"Yes; Must be restarted at each restart","Supported":"Yes","Variables":"Inputs, outputs, memory bits, DB, times, counters","Adjustable":"No","Expandable":"No","Integrated":"1","Size, max.":"16 kbyte","Backup time":"6 wk; At 40 °C ambient temperature","Command set":"see instruction list","Granularity":"1 h","Lower Limit":"10 ms","Racks, max.":"4","SYNC/FREEZE":"Yes","Single step":"Yes","Upper Limit":"9 990 s","Equidistance":"Yes","Inputs, max.":"2 kbyte","Number, max.":"2 048 byte","PROFINET CBA":"Yes","Status block":"Yes","in AS, slave":"Yes","Outputs, max.":"2 kbyte","Plug-in (MMC)":"Yes","Updating time":"1 to 512 ms (minimum value depends on communication share set for PROFINET I/O, on the number of I/O devices, and on the volume of configured user data)","in AS, master":"Yes","to MPI, slave":"Yes","Interface type":"PROFINET","Nesting levels":"8","to MPI, master":"Yes","Range of values":"0 to 2^31 hours (when using SFC 101)","lifecycle_stage":"eol_hot","Firmware version":"V2.3.3","Of Which Central":"256","Power loss, typ.":"3.5 W","RJ 45 (Ethernet)":"Yes","Rated value (DC)":"24 V","S7 communication":"Yes; with loadable FBs, max. configurable connections: 16","Data length, max.":"1 460 byte","PROFIBUS DP slave":"No","expandable FEPROM":"can be plugged in as MMC","Address area, max.":"32; With max. 32 bytes each","Forcing, variables":"Inputs, outputs","PROFIBUS DP master":"No","Per Priority Class":"8","Retentivity preset":"MB 0 to MB 15","Cyclic Transmission":"Yes","PG/OP communication":"Yes","Plug-in (MMC), max.":"8 Mbyte","Programming package":"STEP 7 V5.3 SP3","Acyclic Transmission":"Yes","HW functional status":"01","Inrush current, typ.":"2.5 A","HMI variable updating":"500 ms","Number of breakpoints":"2","Number of connections":"16","Number of startup OBs":"1; OB 100","Open IE communication":"Yes; via TCP/IP","Retentivity available":"Yes; MB 0 to MB 2 047","Modules per rack, max.":"8","PROFINET IO Controller":"Yes","S7 basic communication":"Yes","System functions (SFC)":"see instruction list","Deviation per day, max.":"10 s","Number of HMI variables":"200","Number of entries, max.":"100","Sampling interval, min.":"500 ms","Status/control variable":"Yes","Transmission rate, max.":"100 Mbit/s","User data per job, max.":"76 byte","For Bit Operations, Max.":"0.1 µs","For Bit Operations, Typ.":"0.1 µs","Number of GD loops, max.":"8","Number of blocks (total)":"1 024","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.":"1 024 byte; max. 510 bytes per block","Size of GD packets, max.":"22 byte","For Word Operations, Typ.":"0.2 µs","Global data communication":"No","Number of DP slaves, max.":"124","Number of delay alarm OBs":"1; OB 20","Number of variables, max.":"10","Point-to-point connection":"No","Hardware clock (real-time)":"Yes","Number of GD packets, max.":"8","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","User data consistency, max.":"256 byte","usable for OP communication":"15","usable for PG communication":"15; max.","Retentive And Synchronizable":"Yes","Retentive Data Area In Total":"up to 128 KB","System function blocks (SFB)":"see instruction list","additional within an error OB":"4","reserved for OP communication":"1","reserved for PG communication":"1","Number of cyclic interrupt OBs":"1; OB 35","Number of synchronous error OBs":"2; OB 121, 122","Of Which Status Variables, Max.":"30","Data length per connection, max.":"240 byte; Slave-dependent","For Fixed Point Arithmetic, Typ.":"2 µs","Number of asynchronous error OBs":"1; OB 80","Of Which Control Variables, Max.":"14","Number of functions, master/slave":"17","Number of linked PROFIBUS devices":"16","usable for S7 basic communication":"14","Number of incoming interconnections":"200","Number of outgoing interconnections":"200","permissible range, lower limit (DC)":"20.4 V","permissible range, upper limit (DC)":"28.8 V","reserved for S7 basic communication":"0","Number of GD packets, receiver, max.":"8","Total of all master/slave connections":"1 000","adjustable for OP communication, max.":"15; 1 to 15","adjustable for OP communication, min.":"1","adjustable for PG communication, max.":"15; 1 to 15","adjustable for PG communication, min.":"1","Data length of all HMI variables, max.":"2 000 byte","Number of connectable IO Devices, max.":"128","Number of GD packets, transmitter, max.":"8","Setpoint for the CPU communication load":"50 %","Automatic Detection Of Transmission Rate":"Yes; 10/100 Mbit/s","Number of remote interconnection partners":"32","simultaneously active Alarm-S blocks, max.":"40","User program protection/password protection":"Yes","adjustable for S7 basic communication, max.":"14; 0 to 14","adjustable for S7 basic communication, min.":"0","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)","Power supply to interface (15 to 30 V DC), max.":"0 mA","Current consumption (in no-load operation), typ.":"100 mA","Data length of all incoming interconnections, max.":"2 000 byte","Data length of all outgoing interconnections, max.":"2 000 byte","Direct data exchange (slave-to-slave communication)":"Yes","Transmission frequency: Transmission interval, min.":"10 ms","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 y","Number of device-internal and PROFIBUS interconnections":"500","Data length of all incoming connections master/slave, max.":"4 000 byte","Data length of all outgoing connections master/slave, max.":"4 000 byte","External Protection For Power Supply Lines (Recommendation)":"2 A min.","Data length of device-internal und PROFIBUS interconnections, max.":"4 000 byte","Number of stations that can log on for HMI variables (PN OPC/iMap)":"3; 2x PN OPC/1x iMap"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$733.04","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=410610&mlfb=6ES7315-2FH10-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7315-2FH10-0AB0/alternatives.json"},"ai":{"faq":[{"question":"What memory card is required for 6ES7315-2FH10-0AB0?","answer":"The CPU has 16 kbyte integrated work memory and does not require an external memory card for basic operation. A Micro Memory Card (MMC) is needed for firmware updates or program backup if the project exceeds the internal memory."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7315-2FH10-0AB0","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/6ES7315-2FH10-0AB0 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}}