{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7414-4HM14-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7414-4HM14-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7414-4HM14-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7414-4HM14-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens S7-400H CPU 414-4H, 6ES7414-4HM14-0AB0, fault-tolerant CPU with 4096 digital inputs/outputs, 120 kHz counters, MPI, and multi-language programming.","salesMarkdown":"## CPU 414-4H for fault-tolerant S7-400H systems The Siemens 6ES7414-4HM14-0AB0 is a CPU 414-4H designed for the S7-400H fault-tolerant automation platform. Its FM (fault-tolerant mode) is limited by the number of slots and connections in the rack, per the system manual — this is the governing constraint for redundancy configuration, not a raw I/O count. It supports up to 4096 digital inputs and 4096 digital outputs, with 8 counters preset at 120 kHz. That I/O capacity suits medium-to-large redundant process or manufacturing lines where uptime is critical. Programming languages include LAD, FBD, STL, SCL, CFC, GRAPH, and HiGraph. System function blocks for RDREC, WRREC, RDSYSST, and others are available. ## Communication and integration MPI is supported with a maximum cycle time of 200 ms. RS 485 is available for point-to-point or multi-drop links. The CPU can act as both Modbus client and server via CP modules (PtP or CP 340/341), with up to 10 connections via CP. Routing is enabled, so the CPU can forward messages between subnets. Dimensions: 50 mm wide, 290 mm high, 219 mm deep. The CPU is isolated and includes retentive data memory.","metaTitle":"Siemens 6ES7414-4HM14-0AB0 CPU 414-4H, S7-400H, 4096 I/O","metaDescription":"Siemens 6ES7414-4HM14-0AB0 CPU 414-4H for S7-400H fault-tolerant systems. Supports 4096 inputs/outputs, CFC, GRAPH, MPI. 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":"See manual Automation System S7-400H fault-tolerant systems. Limited by number of slots and number of connections","CFC":"Yes","FBD":"Yes","LAD":"Yes","MPI":"Yes","SCL":"Yes","STL":"Yes","Type":"SFB","Depth":"219 mm","GRAPH":"Yes","RDREC":"8","WRREC":"8","Width":"50 mm","Height":"290 mm","Inputs":"4 096","Number":"8","Preset":"120","RD_REC":"8","RS 485":"Yes","STEP 7":"Yes","WR_REC":"8","via CP":"10","CP, PtP":"See manual Automation System S7-400H fault-tolerant systems. Limited by number of slots and number of connections","Forcing":"Yes","Outputs":"4 096","Overall":"32","Present":"Yes","RDSYSST":"8","Routing":"Yes","WR_PARM":"8","DPNRM_DG":"8","DP_TOPOL":"1","Isolated":"Yes","PARM_MOD":"1","WR_DPARM":"2","As Client":"Yes","As Server":"Yes","HiGraph®":"Yes","MPI, max.":"200 ms","Retentive":"Yes","Supported":"Yes; Via CP and loadable FB","Variables":"Inputs/outputs, memory bits, DBs, distributed I/Os, timers, counters","Adjustable":"Yes","Expandable":"No","Integrated":"2","Resolution":"1 ms","S7 routing":"Yes","Size, max.":"8 kbyte","Command set":"see instruction list","Granularity":"1 h","Lower Limit":"10 ms","SYNC/FREEZE":"No","Single step":"Yes","Slots, max.":"244","Upper Limit":"9 990 s","Equidistance":"No","Inputs, max.":"244 byte","Number, max.":"2 048; Number range: 0 to 2047","Preset, Max.":"900","Status block":"Yes","With Battery":"Yes; all data","in AS, slave":"Yes","to DP, slave":"Yes","Outputs, max.":"244 byte","in AS, master":"Yes","to DP, master":"Yes","to MPI, slave":"Yes","Alarm 8-blocks":"Yes","Interface type":"Pluggable synchronization submodule (FO)","Multicomputing":"No","Nesting levels":"8","Per Slot, Max.":"128 byte","Program alarms":"Yes","Required Slots":"2","Type of memory":"RAM","expandable RAM":"Yes","to MPI, master":"Yes","Inputs, default":"256 byte","Range of values":"0 to 32767 hours","Weight, approx.":"995 g","Without Battery":"No","connectable OPs":"31 without message processing, 8 with message processing","lifecycle_stage":"mature","Adjustable, Max.":"16 kbyte","Firmware version":"V4.5","Of Which Central":"4 096","Outputs, default":"256 byte","Power loss, typ.":"6 W","Rated value (DC)":"Power supply via system power supply","S7 communication":"Yes","Backup time, max.":"Dealt with in the module data manual with the secondary conditions and the factors of influence","Optical interface":"No","PROFIBUS DP slave":"No","expandable FEPROM":"Yes","Forcing, variables":"Inputs/outputs, bit memories, distributed I/Os","Inputs, adjustable":"8 kbyte","PROFIBUS DP master":"Yes","Per Priority Class":"24","Retentivity preset":"MB 0 to MB 15","Number/Number range":"0 to 7","Outputs, adjustable":"8 kbyte","PG/OP communication":"Yes","Programming package":"STEP 7 V5.3 SP2 or higher with HW update","Backup current, max.":"660 µA","Backup current, typ.":"190 µA; Valid up to 40°C","HW functional status":"1","Reserved For Routing":"0","expandable RAM, max.":"64 Mbyte","integrated RAM, max.":"256 kbyte","Consistent Data, Max.":"244 byte","Integrated (For Data)":"1.4 Mbyte","Number of breakpoints":"4","Number of connections":"32","Retentivity available":"Yes","S7 basic communication":"No","System functions (SFC)":"see instruction list","Number of entries, max.":"3 200","Status/control variable":"Yes","Symbol-related messages":"No","Transmission rate, max.":"12 Mbit/s","User data per job, max.":"8 kbyte","expandable FEPROM, max.":"64 Mbyte","For Bit Operations, Typ.":"0.045 µs","Integrated (For Program)":"1.4 Mbyte","Number of clock memories":"8; in 1 memory byte","Number of time alarm OBs":"4","Process control messages":"Yes","For Word Operations, Typ.":"0.045 µs","Global data communication":"No","Number of DP slaves, max.":"96","Number of delay alarm OBs":"4","Number of variables, max.":"256","PROFIBUS and Ethernet CPs":"14; Of which max. 10 CP as DP master","Plug-in interface modules":"Synchronization submodule IF 960 6ES7960-1AA04-0XA0 or 6ES7960-1AB04-0XA0","Hardware clock (real-time)":"Yes","Number of other interfaces":"0","Number of RS 485 interfaces":"2","Number of connections, max.":"16","Number of process alarm OBs":"4","from interface 5 V DC, max.":"90 mA; At each DP interface","Adjustable For Routing, Max.":"0","Mixed mode IM + CP permitted":"No","Retentive And Synchronizable":"Yes","System function blocks (SFB)":"see instruction list","User data per DP slave, max.":"244 byte","additional within an error OB":"1","reserved for OP communication":"1","reserved for PG communication":"1","reserved for S7 communication":"0","Number of connection resources":"16","Number of cyclic interrupt OBs":"4","Number of expansion units, max.":"21","from backplane bus 5 V DC, max.":"1.7 A","from backplane bus 5 V DC, typ.":"1.4 A","For Fixed Point Arithmetic, Typ.":"0.045 µs","from backplane bus 24 V DC, max.":"150 mA; Per DP interface","Number of subprocess images, max.":"15","Deviation per day (buffered), max.":"1.7 s; Power off","For Floating Point Arithmetic, Typ.":"0.135 µs","Number of connectable IM 460s, max.":"6","Number of connectable IM 463s, max.":"4; Single mode only","reserved for S7 basic communication":"0","Activation/deactivation of DP slaves":"No","CiR synchronization time, basic load":"100 ms","Deviation per day (unbuffered), max.":"8.6 s; Power on","Output current of the interface, max.":"150 mA","adjustable for OP communication, max.":"0","adjustable for PG communication, max.":"0","adjustable for S7 communication, max.":"0","Number of connectable IMs (total), max.":"6","Feeding of external backup voltage to CPU":"5 V DC to 15 V DC","simultaneously active Alarm-S blocks, max.":"100","CiR synchronization time, time per I/O byte":"25 µs","User program protection/password protection":"Yes","adjustable for S7 basic communication, max.":"0","User data per job (of which consistent), max.":"240 byte","Number of connectable OPs with message processing":"8","Direct data exchange (slave-to-slave communication)":"No","Number of connectable OPs without message processing":"31","Number of login stations for message functions, max.":"8","Retentive data area (incl. timers, counters, flags), max.":"Total working and load memory (with backup battery)","Number of simultaneous AG-SEND/AG-RECV orders per CPU, max.":"24/24","Number of instances for alarm 8 and S7 communication blocks, max.":"1 200","Number of archives that can log on simultaneously (SFB 37 AR_SEND)":"16"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2,331.00 – $5,137.79","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/dd654b17efabbc590647986bcf542f97.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=64123&mlfb=6ES7414-4HM14-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7414-4HM14-0AB0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7414-4HM14-0AB0","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/6ES7414-4HM14-0AB0 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}}