{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7315-6TH13-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7315-6TH13-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7315-6TH13-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7315-6TH13-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-300 CPU 315-2 DP, 6ES7315-6TH13-0AB0, FM 8, 244 byte I/O, CFC/FBD/SCL/STL/GRAPH/HiGraph support, RS 485, 160×125×130 mm.","salesMarkdown":"## CPU 315-2 DP with technology functions The Siemens 6ES7315-6TH13-0AB0 is a SIMATIC S7-300 CPU 315-2 DP, an SFB-type processor built for applications requiring integrated technology functions — high-speed cam switch signals, for example, or motion sequences that need deterministic cycle times without a separate motion controller. It carries an FM 8 rating, meaning the firmware and hardware are configured for eight technology channels or function modules, depending on the specific application block loaded. The 244-byte input and 244-byte output process image handles distributed I/O on PROFIBUS DP without overrunning the cycle budget. Programming is supported in CFC, FBD, LAD, SCL, STL, GRAPH, and HiGraph — essentially the full TIA Portal language set, minus S7-SCL for some legacy blocks. The CPU requires STEP 7 V5.2 SP1 or higher with the S7 Technology option package installed. ## I/O and communication profile The CPU has one integrated RS 485 interface for PROFIBUS DP. It can act as a DP master (class 1) or as a DP slave via a loadable FB. No MPI port is present on this variant — all multi-point communication goes through the DP interface or an external CP. For expanded connectivity, the CPU supports up to 2 CPs for DP, 10 CPs for LAN (PROFINET or Industrial Ethernet), and 8 CPs for PtP serial links. Routing is not supported, so any cross-network data exchange must be handled at the application layer. The process image is 244 bytes each for inputs and outputs, with a total of 16 slots (overall) for modules. Forcing is supported, which is useful during commissioning to override process values without modifying the logic. The I2t rating of 1 A²·s is the thermal energy the internal bus can handle during a short-circuit event — useful for sizing the external 24 VDC power supply and ensuring the backplane fuse coordinates downstream. Rated for 0 °C to 60 °C operating ambient, which covers most control-cabinet environments without active cooling. Dimensions are 160 mm wide, 125 mm high, 130 mm deep — standard S7-300 single-width format, fitting the standard DIN-rail mounting rail. The RS 485 interface is isolated, which helps avoid ground-loop issues when the DP cable runs across cabinets or through junction boxes. No PROFIsafe capability is present — if functional safety over PROFIBUS is required, a different CPU or a safety-rated CP would be needed.","metaTitle":"Siemens 6ES7315-6TH13-0AB0 CPU 315-2 DP, FM 8, 244 byte I/O","metaDescription":"Siemens SIMATIC S7-300 CPU 315-2 DP, order code 6ES7315-6TH13-0AB0. FM 8, 244 byte inputs/outputs, CFC/FBD/SCL/STL support. Sourced to order via 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","Max.":"60 °C","Min.":"0 °C","Type":"SFB","Depth":"130 mm","GRAPH":"Yes","Width":"160 mm","title":"6ES7315-6TH13-0AB0","Alarms":"No","Height":"125 mm","Inputs":"244 byte","Number":"1","Preset":"No retentivity","RS 485":"Yes","STEP 7":"Yes; V5.2 SP1 or higher and S7 Technology option package","via CP":"2; for DP","CP, LAN":"10","CP, PtP":"8","Forcing":"Yes","Outputs":"244 byte","Overall":"16","Present":"Yes","Routing":"No","GSD file":"http://support.automation.siemens.com in Product Support area","Isolated":"Yes","As Client":"Yes; Via CP and loadable FB","As Server":"Yes","Functions":"for technology functions, e.g. high-speed cam switch signals","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","Expandable":"No","Integrated":"2; 1 DP and 1 DP (drive)","Size, max.":"2 048 byte","Backup time":"6 wk; At 40 °C ambient temperature","Command set":"see instruction list","Granularity":"1 h","Lower Limit":"1 ms","Racks, max.":"1","SYNC/FREEZE":"No","Single step":"Yes","Upper Limit":"6 000 ms","description":"***Spare part*** SIMATIC S7-300, CPU 315T-2 DP, Central processing unit for PLC and Technology tasks, 256 KB work memory, 1st interface MPI/DP 12 Mbit/s, 2nd interface DP (drive), Integr. I/O for technology, Front connector (1x 40-pole) and Micro Memory Card min. 8 MB required","Equidistance":"Yes","For Uprating":"No","Inputs, max.":"244 byte","Number, max.":"see instruction list","Status block":"Yes","in AS, slave":"Yes","to DP, slave":"Yes","2-Wire Sensor":"No","Outputs, max.":"244 byte","Plug-in (MMC)":"Yes","in AS, master":"Yes","to DP, master":"Yes","to MPI, slave":"Yes","Digital inputs":"66","For Signal \"0\"":"-3 to +5V","For Signal \"1\"":"+15 to +30 V","Interface type":"Integrated RS 485 interface","Nesting levels":"8","Shielded, Max.":"1 000 m","to MPI, master":"Yes","Digital outputs":"66","Inputs, default":"128 byte","Range of values":"0 to 2^31 hours (when using SFC 101)","Weight, approx.":"750 g","Without Battery":"Yes; Program and data","lifecycle_stage":"eol_hot","Firmware version":"CPU: V2.7, integrated technology: V4.1.5","Isochronous mode":"Yes","Of Which Central":"64","Outputs, default":"128 byte","Power loss, typ.":"6 W","Rated value (DC)":"24 V","S7 communication":"No","PROFIBUS DP slave":"No","Address area, max.":"32","Forcing, variables":"Inputs, outputs","Inputs, adjustable":"2 048 byte","On Lamp Load, Max.":"100 Hz","PROFIBUS DP master":"Yes; DP(DRIVE)-Master","Per Priority Class":"8","Retentivity preset":"Yes","Usable For Routing":"8; additional","up to 40 °C, max.":"3 A","up to 60 °C, max.":"3 A","At \"0\" To \"1\", Max.":"10 µs; Typical","At \"1\" To \"0\", Max.":"10 µs; Typical","Number/Number range":"0","Outputs, adjustable":"2 048 byte","PG/OP communication":"Yes","Plug-in (MMC), max.":"8 Mbyte","Programming package":"STEP 7 V5.4 + SP5 (and higher) and Optional package S7-Technology V4.2","Diagnostics function":"No","For Signal \"0\", Max.":"3 V; (2L+)","For Signal \"1\", Min.":"Rated voltage -2.5 V","For Signal \"1\", Typ.":"7 mA","HW functional status":"01","Inrush current, typ.":"2.5 A","Isolation tested with":"500 V DC","Number of breakpoints":"2","Number of connections":"32","Number of startup OBs":"1; OB 100","Retentivity available":"Yes; MB 0 to MB 2 047","Modules per rack, max.":"8","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","Number of analog inputs":"0","Number of entries, max.":"100","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, Max.":"0.1 µs","For Bit Operations, Typ.":"0.1 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":"4","Number of free cycle OBs":"1; OB 1","Number of time alarm OBs":"1; OB 10","Per Priority Class, Max.":"1 024 byte","Response threshold, typ.":"1 A","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.":"64","Number of delay alarm OBs":"1; OB 20","Number of digital outputs":"8","Number of variables, max.":"10","Point-to-point connection":"No","With Inductive Load, Max.":"0.2 Hz; According to IEC 60947-5-1, DC-13","With Resistive Load, Max.":"100 Hz","Automatic Baud Rate Search":"No","For Signal \"1\" Rated Value":"0.5 A","Hardware clock (real-time)":"Yes","Number of GD packets, max.":"8","Controlling a digital input":"No","Number of RS 422 interfaces":"0","Number of RS 485 interfaces":"2","Number of process alarm OBs":"1; OB 40","Of Which High-Speed Outputs":"8","Process diagnostic messages":"Yes","Reverse polarity protection":"No; (2L+)","S7 communication, as client":"No; but via CP and loadable FB","S7 communication, as server":"Yes; Connection configured on one side only","usable for OP communication":"15","usable for PG communication":"15","Retentive And Synchronizable":"Yes","System function blocks (SFB)":"see instruction list","Number of PROFINET interfaces":"0","additional within an error OB":"4","reserved for OP communication":"1","reserved for PG communication":"1","Cycle Monitoring Time / Preset":"150 ms","Number of cyclic interrupt OBs":"1; OB 35","Number of isochronous mode OBs":"1; OB 61","For Redundant Control Of A Load":"No","Number of expansion units, max.":"0","Number of synchronous error OBs":"2; OB 121, 122","Of Which Status Variables, Max.":"30","For Fixed Point Arithmetic, Typ.":"2 µs","Number of asynchronous error OBs":"5; OB 80, 82, 85, 86, 87","Of Which Control Variables, Max.":"14","User data per address area, max.":"32 byte","Number of subprocess images, max.":"1","usable for S7 basic communication":"12","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.":"8","For Signal \"0\" Residual Current, Max.":"0.3 mA","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","Between The Channels And Backplane Bus":"Yes","Status indicator digital input (green)":"Yes","Number of GD packets, transmitter, max.":"8","Status indicator digital output (green)":"Yes","Number of industrial Ethernet interfaces":"0","Number of technology synchronous alarm OBs":"1; OB 65","simultaneously active Alarm-S blocks, max.":"40","Limitation of inductive shutdown voltage to":"48 V","User program protection/password protection":"Yes","adjustable for S7 basic communication, max.":"12","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), 76 bytes (with X_PUT or X_GET as server)","Current consumption (in no-load operation), typ.":"200 mA","Of Which Inputs Usable For Technological Functions":"4","Direct data exchange (slave-to-slave communication)":"Yes","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","for signal \"1\" permissible range for 0 to 60 °C, max.":"0.6 A","for signal \"1\" permissible range for 0 to 60 °C, min.":"5 mA","Retentive data area (incl. timers, counters, flags), max.":"128 kbyte","External Protection For Power Supply Lines (Recommendation)":"2 A min."}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1,764.03","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ba2b8f4815a4f82f8a10f53c13cce30c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=271193&mlfb=6ES7315-6TH13-0AB0"},"ai":{"faq":[{"question":"What is the FM 8 rating on this CPU?","answer":"FM 8 means the CPU is configured for eight technology channels or function modules, depending on the application block loaded. It is a firmware/hardware capability indicator for technology functions like high-speed cam switching."},{"question":"What programming languages does this CPU support?","answer":"It supports CFC, FBD, LAD, SCL, STL, GRAPH, and HiGraph. Requires STEP 7 V5.2 SP1 or higher with the S7 Technology option package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7315-6TH13-0AB0","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/6ES7315-6TH13-0AB0 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}}