{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7314-1AG14-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7314-1AG14-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7314-1AG14-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7314-1AG14-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-300 CPU 314, order code 6ES7314-1AG14-0AB0, work memory 256 byte, 256 digital inputs / 256 digital outputs, MPI / RS 485 interface, STEP 7 V5.2 SP1 or higher.","salesMarkdown":"## CPU 314 for S7-300 rack The Siemens 6ES7314-1AG14-0AB0 is a SIMATIC S7-300 CPU 314 that snaps onto the standard DIN rail in the S7-300 rack, occupying a single-width slot at 40 mm wide, 125 mm tall, and 130 mm deep. It supports up to 256 digital inputs and 256 digital outputs, with a work memory of 256 byte that is not expandable. Programming requires STEP 7 V5.2 SP1 or higher with the corresponding HW update. ## Work memory and retentive data The integrated work memory is 0 byte; the 256 byte work memory is the maximum size available and cannot be expanded via a memory card. Retentive memory is present and must be restarted at each restart; the retentive range is adjustable from 10 to 499, with a preset of 10 and an overall size of 12. The retentive memory covers inputs, outputs, memory bits, DBs, times, and counters. ## Communication interfaces The CPU 314 includes an MPI interface and an RS 485 interface for PROFIBUS DP, supporting operation as both a DP client and a DP server. PROFIBUS DP communication via CP and loadable FC is supported; PROFIsafe is not supported. Up to 4 CP connections via LAN, 10 via LAN, and 8 via PtP are possible; routing is not supported and the interface is not isolated. ## Programming languages and ambient limits The CPU supports LAD, FBD, STL, SCL, GRAPH, HiGraph, and CFC programming languages. Rated for an ambient temperature range of 0 °C to 60 °C, suitable for standard control cabinet environments.","metaTitle":"Siemens 6ES7314-1AG14-0AB0 CPU 314, 256 byte work memory","metaDescription":"Siemens SIMATIC S7-300 CPU 314, 6ES7314-1AG14-0AB0, 256 byte work memory, 256 I/O, MPI/RS485, STEP 7 V5.2. 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":"Yes","SCL":"Yes","STL":"Yes","Max.":"60 °C","Min.":"0 °C","Type":"SFB","Depth":"130 mm","GRAPH":"Yes","Width":"40 mm","Height":"125 mm","Inputs":"256","Number":"1","Preset":"10","RS 485":"Yes","STEP 7":"Yes; V5.2 SP1 or higher with HW update","via CP":"4","CP, LAN":"10","CP, PtP":"8","Forcing":"Yes","Outputs":"256","Overall":"12","Present":"Yes","Routing":"No","Isolated":"No","As Client":"Yes; 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":"0","Size, max.":"256 byte","Backup time":"6 wk; At 40 °C ambient temperature","Command set":"see instruction list","Granularity":"1 h","Lower Limit":"10 ms","Racks, max.":"4","Single step":"Yes","Upper Limit":"9 990 s","Number, max.":"see instruction list","Status block":"Yes; Up to 2 simultaneously","in AS, slave":"No","Plug-in (MMC)":"Yes","in AS, master":"Yes","to MPI, slave":"Yes","Interface type":"Integrated RS 485 interface","Nesting levels":"8","to MPI, master":"Yes","Can Be Read Out":"Yes","Inputs, default":"128 byte","Range of values":"0 to 2^31 hours (when using SFC 101)","Weight, approx.":"280 g","Without Battery":"Yes; Program and data","lifecycle_stage":"eol_hot","Block encryption":"Yes; With S7 block Privacy","Firmware version":"V3.3","Of Which Central":"256","Outputs, default":"128 byte","Power loss, typ.":"4 W","Rated value (DC)":"24 V","S7 communication":"Yes; Only server, configured on one side","PROFIBUS DP slave":"No","Repeat rate, min.":"1 s","Forcing, variables":"Inputs, outputs","Inputs, adjustable":"1 024 byte","PROFIBUS DP master":"No","Per Priority Class":"16","Retentivity preset":"Yes","Data record routing":"No","Number/Number range":"0","Outputs, adjustable":"1 024 byte","PG/OP communication":"Yes","Plug-in (MMC), max.":"8 Mbyte","Programming package":"STEP 7 V5.5 + SP1 or higher or STEP 7 V5.2 + SP1 or higher with HSP 218","HW functional status":"01","Inrush current, typ.":"3.5 A","Number of breakpoints":"4","Number of startup OBs":"1; OB 100","Retentivity available":"Yes; MB 0 to MB 255","Modules per rack, max.":"8","Retentivity adjustable":"Yes; via non-retain property on DB","S7 basic communication":"Yes","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.":"187.5 kbit/s","User data per job, max.":"180 byte; With PUT/GET","For Bit Operations, Typ.":"0.06 µs","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 kbyte; Max. 2 KB per block","Size of GD packets, max.":"22 byte","For Word Operations, Typ.":"0.12 µs","Global data communication":"Yes","Number of delay alarm OBs":"2; OB 20, 21","Number of digital outputs":"0","Number of variables, max.":"10","Point-to-point connection":"No","Hardware clock (real-time)":"Yes","Number of GD packets, max.":"8","Number of RS 422 interfaces":"0","Number of RS 485 interfaces":"1; MPI","Number of process alarm OBs":"1; OB 40","Process diagnostic messages":"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","Number of PROFINET interfaces":"0","additional within an error OB":"4","reserved for OP communication":"1","reserved for PG communication":"1","Number of cyclic interrupt OBs":"4; OB 32, 33, 34, 35","Number of expansion units, max.":"3","Number of synchronous error OBs":"2; OB 121, 122","Of Which Status Variables, Max.":"30","For Fixed Point Arithmetic, Typ.":"0.16 µs","Number of asynchronous error OBs":"4; OB 80, 82, 85, 87","Of Which Control Variables, Max.":"14","Current consumption (rated value)":"650 mA","usable for S7 basic communication":"8","For Floating Point Arithmetic, Typ.":"0.59 µs","permissible range, lower limit (DC)":"19.2 V","permissible range, upper limit (DC)":"28.8 V","reserved for S7 basic communication":"0","Number of GD packets, receiver, max.":"8","Output current of the interface, max.":"200 mA","adjustable for OP communication, max.":"11","adjustable for OP communication, min.":"1","adjustable for PG communication, max.":"11","adjustable for PG communication, min.":"1","Number of GD packets, transmitter, max.":"8","Number of entries readable in RUN, max.":"499","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":"0","simultaneously active Alarm-S blocks, max.":"300","User program protection/password protection":"Yes","adjustable for S7 basic communication, max.":"8","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.":"240 byte; as server","Current consumption (in no-load operation), typ.":"140 mA","Number of login stations for message functions, max.":"12; 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","Retentive data area (incl. timers, counters, flags), max.":"64 kbyte","External Protection For Power Supply Lines (Recommendation)":"2 A min."}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$504.00 – $1,335.45","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ba77846ecec22f3520839e5d2f88ccf0.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=410459&mlfb=6ES7314-1AG14-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7314-1AG14-0AB0/alternatives.json"},"ai":{"faq":[{"question":"What is the work memory size of the 6ES7314-1AG14-0AB0?","answer":"The work memory is 256 byte maximum and is not expandable."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7314-1AG14-0AB0","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/6ES7314-1AG14-0AB0 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}}