{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7412-1XF03-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7412-1XF03-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7412-1XF03-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7412-1XF03-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-400 CPU 6ES7412-1XF03-0AB0, FM 16 slots, 244 byte I/O, MPI, PROFIBUS DP, 25 x 290 x 219 mm.","salesMarkdown":"## CPU for mid-range S7-400 racks The 6ES7412-1XF03-0AB0 is a Siemens SIMATIC S7-400 CPU that handles up to 16 function modules (FM), limited by the number of slots and connections in the rack. It addresses 244 bytes each of inputs and outputs, giving it the I/O footprint for a mid-sized distributed control system. Programming options cover LAD, FBD, STL, SCL, GRAPH, HiGraph, and CFC — so whichever language your team prefers for the sequence logic, this CPU supports it. MPI and PROFIBUS DP are onboard for the fieldbus slice; RS 485 is available via the integrated interface. The module measures 25 mm wide, 290 mm high, and 219 mm deep — a single-wide S7-400 slot that slides into the rack. The 25 mm width means it consumes one slot position on the backplane; plan for the 290 mm height when clearing the gland plate or enclosure door. One integrated digital input is included, with a resolution of 1 ms. The onboard DI can serve as a fast interrupt input or a simple start-permissive signal without consuming an FM slot.","metaTitle":"Siemens 6ES7412-1XF03-0AB0 S7-400 CPU, 16 FM slots","metaDescription":"Siemens S7-400 CPU 6ES7412-1XF03-0AB0 with 244 byte I/O, 16 FM slots, MPI, PROFIBUS DP. Supports LAD, FBD, STL, SCL, GRAPH, HiGraph. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"FM":"16; 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","Width":"25 mm","Height":"290 mm","Inputs":"244 byte","Number":"8","Preset":"No retentivity","RS 485":"Yes","STEP 7":"Yes","via CP":"10","CP, LAN":"16; limited by number of slots and number of connections; for S5-compatible communication max. 4","CP, PtP":"16; limited by number of slots","Forcing":"Yes","Outputs":"244 byte","Overall":"16; of which one is reserved for PG and OP","Present":"Yes","Routing":"Yes; with interface active","Isolated":"Yes","As Client":"Yes","As Server":"Yes","HiGraph®":"Yes","Supported":"Yes; Via CP and loadable FB","Adjustable":"Yes","Expandable":"No","Integrated":"1","Resolution":"1 ms","Size, max.":"48 kbyte","via IM 467":"4","Lower Limit":"10 ms","SYNC/FREEZE":"Yes","Single step":"Yes","Slots, max.":"244","Upper Limit":"9 990 s","Equidistance":"Yes","Inputs, max.":"244 byte","Number, max.":"4 kbyte","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":"MPI/PROFIBUS DP","Multicomputing":"Yes; 4 CPUs max. (with UR1 or UR2)","Nesting levels":"8","Per Slot, Max.":"128 byte","Program alarms":"Yes","Required Slots":"1","Type of memory":"RAM","expandable RAM":"Yes; with Memory Card (RAM)","to MPI, master":"Yes","Inputs, default":"128 byte; adjustable at the expense of the code area of the RAM","Weight, approx.":"720 g","Without Battery":"No","connectable OPs":"16 without message processing, 8 with message processing","lifecycle_stage":"mature","Isochronous mode":"Yes","Of Which Central":"2 048","Outputs, default":"128 byte; adjustable at the expense of the code area of the RAM","Power loss, typ.":"7.5 W","Rated value (DC)":"Power supply via system power supply","S7 communication":"Yes","PROFIBUS DP slave":"Yes","expandable FEPROM":"Yes; with Memory Card (FLASH)","Address area, max.":"32","Inputs, adjustable":"4 kbyte; adjustable at the expense of the code area of the RAM","PROFIBUS DP master":"Yes","Per Priority Class":"24","Retentivity preset":"MB 0 to MB 15","Usable For Routing":"0","Outputs, adjustable":"4 kbyte; adjustable at the expense of the code area of the RAM","PG/OP communication":"Yes","Backup current, max.":"300 µA","Backup current, typ.":"40 µA","Reserved For Routing":"0","Shortest Clock Pulse":"5 ms; 2.5 ms without using the SFCs 126 / 127","Via Interface Module":"0","expandable RAM, max.":"64 Mbyte","integrated RAM, max.":"256 kbyte","Consistent Data, Max.":"244 byte","Integrated (For Data)":"48 kbyte","Number of breakpoints":"4","Number of connections":"16","Retentivity available":"Yes; From MB 0 to MB 4 095","S7 basic communication":"No","Number of entries, max.":"200","Status/control variable":"Yes","Symbol-related messages":"Yes","Transmission rate, max.":"12 Mbit/s","User data per job, max.":"8 kbyte","expandable FEPROM, max.":"64 Mbyte","For Bit Operations, Typ.":"0.2 µs","Integrated (For Program)":"48 kbyte","Number of clock memories":"8; 1 memory byte","Number of time alarm OBs":"2","Process control messages":"Yes","Size of GD packets, max.":"64 byte","For Word Operations, Typ.":"0.2 µs","Global data communication":"No","Number of DP slaves, max.":"32","Number of delay alarm OBs":"2","Of Which Consistent, Max.":"32 byte","PROFIBUS and Ethernet CPs":"14; incl. CP 443-5 Ext. and IM 467","Hardware clock (real-time)":"Yes","Number of connections, max.":"16","Number of process alarm OBs":"2","Adjustable For Routing, Max.":"0","Mixed mode IM + CP permitted":"No; IM 467 cannot be used jointly with CP 443-5 Ext.","Retentive And Synchronizable":"Yes","Retentive Data Area In Total":"Total working and load memory (with backup battery)","additional within an error OB":"2","reserved for OP communication":"1","reserved for PG communication":"1","reserved for S7 communication":"0","Number of cyclic interrupt OBs":"2","Number of expansion units, max.":"21; of which 6 ER with K-bus","from backplane bus 5 V DC, max.":"1.6 A","from backplane bus 5 V DC, typ.":"1.5 A","For Fixed Point Arithmetic, Typ.":"0.2 µs","User data per address area, max.":"32 byte","from backplane bus 24 V DC, max.":"150 mA; Total current consumption of the components connected to the MPI/DP interfaces, but no more than 150 mA per interface","Number of subprocess images, max.":"8","For Floating Point Arithmetic, Typ.":"0.6 µs","Number of connectable IM 460s, max.":"6","Number of connectable IM 463s, max.":"4; IM 463-2","reserved for S7 basic communication":"0","Activation/deactivation of DP slaves":"Yes","CiR synchronization time, basic load":"100 ms","Number of GD packets, receiver, max.":"16","User data per isochronous slave, max.":"128 byte","adjustable for OP communication, max.":"0","adjustable for PG communication, max.":"0","adjustable for S7 communication, max.":"0","Number of GD packets, transmitter, max.":"8","Number of connectable IMs (total), max.":"6","Feeding of external backup voltage to CPU":"5 V DC to 15 V DC","CiR synchronization time, time per I/O byte":"200 µs","User program protection/password protection":"Yes","adjustable for S7 basic communication, max.":"0","Direct data exchange (slave-to-slave communication)":"Yes","Number of login stations for message functions, max.":"8","Number of pluggable S5 modules (via adapter capsule in central device), max.":"6"}},"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=444375&mlfb=6ES7412-1XF03-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7412-1XF03-0AB0/alternatives.json"},"ai":{"faq":[{"question":"What is the FM capacity of this CPU?","answer":"The CPU supports up to 16 function modules, limited by the number of slots and connections in the rack. One of those 16 slots is reserved for PG and OP communication."},{"question":"What programming languages does this CPU support?","answer":"It supports LAD, FBD, STL, SCL, GRAPH, HiGraph, and CFC — covering ladder, function block, structured text, and sequential function chart methods."},{"question":"What are the physical dimensions of this module?","answer":"The module is 25 mm wide, 290 mm high, and 219 mm deep, fitting a single S7-400 slot."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7412-1XF03-0AB0","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/6ES7412-1XF03-0AB0 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}}