{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6AG1412-3HJ14-4AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6AG1412-3HJ14-4AB0","canonicalUrl":"https://aoctrl.com/siemens/6AG1412-3HJ14-4AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6AG1412-3HJ14-4AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIPLUS S7-400 CPU 412-3H, order code 6AG1412-3HJ14-4AB0, SFB type for fault-tolerant systems, 0 to 60 °C, 4096 digital I/O, RS 485 MPI/PROFIBUS DP.","salesMarkdown":"## Fault-tolerant CPU for S7-400H racks The Siemens 6AG1412-3HJ14-4AB0 is a SIPLUS S7-400 CPU 412-3H, an SFB-type processor built for the S7-400H fault-tolerant automation system. Its function manual (FM) limits the configuration by the number of slots and connections in the rack, so the actual I/O count and communication links depend on the backplane and power supply chosen. ## Wide temperature and onboard fieldbus Rated for 0 °C to 60 °C ambient, this CPU fits into conditioned cabinets and industrial enclosures without derating across the range. The onboard RS 485 interface supports both MPI and PROFIBUS DP, so it can talk to operator panels, drives, and remote I/O without an extra CP module. Digital I/O capacity reaches 4096 inputs and 4096 outputs, enough for medium-to-large distributed plants. The CPU measures 50 mm wide, 290 mm high, and 219 mm deep — standard S7-400 form factor that snaps into the rack. ## Programming and engineering tools Supports LAD, FBD, STL, SCL, GRAPH, and CFC programming — covers ladder, function block, structured text, and continuous function chart. STEP 7 engineering is required; the CPU also handles routing, forcing, and a full set of system-diagnosis blocks. The 6AG1412-3HJ14-4AB0 carries a CE mark.","metaTitle":"Siemens 6AG1412-3HJ14-4AB0 SIPLUS S7-400 CPU 412-3H, 0–60°C","metaDescription":"Siemens 6AG1412-3HJ14-4AB0 SIPLUS S7-400 CPU 412-3H for fault-tolerant systems. 4096 I/O, RS 485 MPI/PROFIBUS DP, 0–60°C. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Industrial PCs"],"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","Max.":"60 °C; = Tmax","Min.":"0 °C; = Tmin","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; MPI/PROFIBUS DP","STEP 7":"Yes","WR_REC":"8","via CP":"10","CE mark":"Yes","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":"16","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":"1","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.":"300","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.":"990 g","Without Battery":"No","connectable OPs":"15 without message processing, 8 with message processing","lifecycle_stage":"current","Adjustable, Max.":"16 kbyte","Firmware version":"V4.5","Isochronous mode":"No","Of Which Central":"4 096","Outputs, default":"256 byte","Power loss, typ.":"5.5 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","Via Interface Module":"0","expandable RAM, max.":"64 Mbyte","integrated RAM, max.":"256 kbyte","Consistent Data, Max.":"244 byte","Integrated (For Data)":"256 kbyte","Number of breakpoints":"4","Number of connections":"No configuration of CPU as DP slave","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.":"0.075 µs","Integrated (For Program)":"512 kbyte","Number of clock memories":"8; in 1 memory byte","Number of time alarm OBs":"4","Process control messages":"Yes","For Word Operations, Typ.":"0.075 µs","Global data communication":"No","Number of DP slaves, max.":"32","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","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 cyclic interrupt OBs":"4","Number of expansion units, max.":"21","from backplane bus 5 V DC, max.":"1.5 A","from backplane bus 5 V DC, typ.":"1.2 A","For Fixed Point Arithmetic, Typ.":"0.075 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 ms; Power off","For Floating Point Arithmetic, Typ.":"0.225 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":"150 ms","Deviation per day (unbuffered), max.":"8.6 ms; 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":"40 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","Ambient air temperature-barometric pressure-altitude":"Tmin ... Tmax at 1 080 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 connectable OPs without message processing":"15","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.":"600","Number of archives that can log on simultaneously (SFB 37 AR_SEND)":"16"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=178681&mlfb=6AG1412-3HJ14-4AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6AG1412-3HJ14-4AB0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6AG1412-3HJ14-4AB0","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/6AG1412-3HJ14-4AB0 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}}