{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7414-3EM05-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7414-3EM05-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7414-3EM05-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7414-3EM05-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens S7-400 CPU 414-3 PN/DP, order code 6ES7414-3EM05-0AB0, 244-byte I/O, PROFINET, DPV0, CFC/FBD/LAD/SCL/STL/GRAPH.","salesMarkdown":"## CPU 414-3 PN/DP — what this S7-400 processor brings to the rack The Siemens 6ES7414-3EM05-0AB0 is a CPU 414-3 PN/DP for the S7-400 family, sitting in the mid-to-high range of the line. It gives you a balanced mix of processing power and integrated communication — PROFINET onboard, PROFIBUS DP via DPV0, and support for all five IEC languages plus CFC and GRAPH. The 244-byte input and 244-byte output process-image limit is generous for a mid-frame CPU, letting you map a substantial number of I/O points without reaching for a larger processor. ## Programming languages and engineering tools This CPU runs STEP 7 and supports LAD, FBD, SCL, STL, and GRAPH — that covers ladder, function block, structured text, statement list, and sequential function chart. It also handles CFC (Continuous Function Chart), which is useful for signal-flow-oriented programming in process applications. For a junior programmer or someone cross-training from another platform, the availability of LAD and FBD means you can start with familiar graphical languages and move to SCL or STL as you get comfortable. ## Communication interfaces and limits Integrated PROFINET gives you UDP and TCP/IP connectivity via loadable function blocks — no separate CP needed for basic Ethernet communication. PROFIBUS DP runs DPV0; DPV1 is not supported on this CPU, so if your application requires acyclic data exchange with DP slaves (like parameterization during operation), you'll need to handle that through other means. RS 485 is available for point-to-point links. The CPU supports routing when the interface is active, which helps when you're bridging PROFINET and PROFIBUS segments. Maximum of 4 CP443-1 communication processors in the central controller, and note that mixed operation of CP443-1 EX40 with EX41/EX20/GX20 is not allowed. Width is 50 mm, height 290 mm, depth 219 mm — a single-wide S7-400 slot. It mounts into the standard S7-400 rack and connects to the backplane via two male DIN connectors. The CPU is isolated. This CPU is an established S7-400 model.","metaTitle":"Siemens 6ES7414-3EM05-0AB0 CPU 414-3 PN/DP, 244-byte I/O, PR","metaDescription":"Siemens 6ES7414-3EM05-0AB0 CPU 414-3 PN/DP for S7-400. Supports CFC, FBD, LAD, SCL, STL, GRAPH. 244-byte I/O, PROFINET, DPV0. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"FM":"Limited by number of slots or number of connections","CFC":"Yes","FBD":"Yes","LAD":"Yes","MPI":"No","SCL":"Yes","STL":"Yes","UDP":"Yes; via integrated PROFINET interface and loadable FBs","DPV0":"Yes","DPV1":"No","Type":"SFB","Depth":"219 mm","GRAPH":"Yes","RDREC":"8","WRREC":"8","Width":"50 mm","Height":"290 mm","Inputs":"244 byte","Number":"16","Preset":"120","RD_REC":"8","RS 485":"Yes","STEP 7":"Yes","TCP/IP":"Yes; via integrated PROFINET interface and loadable FBs","WR_REC":"8","via CP":"4; No mixed operation of CP443-1 EX40 and CP443-1 EX 41/EX20/GX20, max. 4 in central controller","CP, PtP":"CP 440: Limited by number of slots; CP 441: Limited by number of slots and number of connections","Forcing":"Yes","Outputs":"244 byte","Overall":"32","Present":"Yes","RDSYSST":"8","Routing":"Yes; with interface active","WR_PARM":"8","DPNRM_DG":"8","DP_TOPOL":"1","GSD file":"http://support.automation.siemens.com/WW/view/en/113652","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","Max. Cycle":"32 ms","Resolution":"1 ms","S7 routing":"Yes","Size, max.":"8 kbyte; Size of bit memory address area","Web server":"Yes; only read function","via IM 467":"4","Command set":"see instruction list","Granularity":"1 h","Lower Limit":"10 ms","SYNC/FREEZE":"Yes","Send cycles":"250 µs, 500 µs, 1 ms","Single step":"Yes","Slots, max.":"244","Upper Limit":"9 990 s","Autocrossing":"Yes","Equidistance":"Yes","Inputs, max.":"244 byte","Number, max.":"3 000; Number range: 0 to 7999","PROFINET CBA":"Yes","Preset, Max.":"300","Status block":"Yes; Up to 2 simultaneously","With Battery":"Yes; all data","in AS, slave":"Yes","to DP, slave":"Yes","to IF 964 DP":"Yes","Outputs, max.":"244 byte","Overall, Max.":"512","Updating time":"250 µs to 512 ms; minimum value dependent on preset communication share for PROFINET I/O, of number of I/O devices and number of configured user data","in AS, master":"Yes","to DP, master":"Yes","to MPI, slave":"Yes","Alarm 8-blocks":"Yes","Ethernet, max.":"10 ms","Interface type":"Pluggable interface module (IF)","Multicomputing":"Yes; 4 CPUs max. (with UR1 or UR2)","Nesting levels":"7","Per Slot, Max.":"128 byte","Program alarms":"Yes","Required Slots":"2","SCAN procedure":"Yes","Type of memory":"RAM","expandable RAM":"Yes; with Memory Card (RAM)","to MPI, master":"Yes","Autonegotiation":"Yes","Inputs, default":"256 byte","Number of ports":"2","Range of values":"SFCs 2, 3 and 4: 0 to 32767 hours SFC 101: 0 to 2^31 - 1 hours","Weight, approx.":"0.9 kg","Without Battery":"No","connectable OPs":"31","lifecycle_stage":"mature","Adjustable, Max.":"16 kbyte","Firmware version":"V5.3","Isochronous mode":"Yes","Of Which Central":"4 096","Outputs, default":"256 byte","Power loss, max.":"6.5 W","Power loss, typ.":"6 W","RJ 45 (Ethernet)":"Yes","Rated value (DC)":"Power supply via system power supply","S7 communication":"Yes","Backup time, max.":"See reference manual, module data, Chapter 3.3","Data length, max.":"1 472 byte","Integrated Switch":"Yes","Optical interface":"No","PROFIBUS DP slave":"Yes","expandable FEPROM":"Yes; with Memory Card (FLASH)","Address area, max.":"32","Forcing, variables":"Inputs/outputs, bit memories, distributed I/Os","Inputs, adjustable":"8 kbyte","PROFIBUS DP master":"Yes","PROFINET IO Device":"No","Per Priority Class":"24","Retentivity preset":"MB 0 to MB 15","Cyclic Transmission":"Yes","Data record routing":"Yes","Number/Number range":"0 to 15","Outputs, adjustable":"8 kbyte","PG/OP communication":"Yes","Prioritized startup":"Yes","Programming package":"STEP 7 V5.4 SP5 or higher","on Ethernet via NTP":"Yes; As client","Acyclic Transmission":"Yes","Backup current, max.":"550 µA","Backup current, typ.":"125 µA; up to 40 °C","HW functional status":"05","ISO-on-TCP (RFC1006)":"Yes; Via integrated PROFINET interface or CP 443-1 Adv. and loadable FBs","In 100 Ms Grid, Max.":"128","In 500 Ms Grid, Max.":"256","Reserved For Routing":"0","Shortest Clock Pulse":"1 ms; 0.5 ms without use of SFC 126, 127","Via Interface Module":"1; IF 964-DP","expandable RAM, max.":"64 Mbyte","integrated RAM, max.":"512 kbyte","Consistent Data, Max.":"244 byte","In 1000 Ms Grid, Max.":"512","Integrated (For Data)":"1.4 Mbyte","Number of breakpoints":"4","Number of connections":"16","Number of startup OBs":"3; OB 100-102","Open IE communication":"Yes","Retentivity available":"Yes","Number of HTTP clients":"5","Of Which In Line, Max.":"61","PROFINET IO Controller":"Yes","S7 basic communication":"No","System functions (SFC)":"see instruction list","With 100 Ms Grid, Max.":"1","Number of entries, max.":"3 200","Status/control variable":"Yes; Up to 16 variable tables","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.":"45 ns","Integrated (For Program)":"1.4 Mbyte","Number of DPV1 alarm OBs":"3; OB 55-57","Number of GD loops, max.":"8","Number of background OBs":"1; OB 90","Number of clock memories":"8; in 1 memory byte","Number of free cycle OBs":"1; OB 1","Number of time alarm OBs":"4; OB 10-13","Process control messages":"Yes","Size of GD packets, max.":"54 byte","For Word Operations, Typ.":"45 ns","Global data communication":"No","Number of DP slaves, max.":"96","Number of delay alarm OBs":"4; OB 20-23","Number of variables, max.":"256","Of Which Consistent, Max.":"32 byte","PROFIBUS and Ethernet CPs":"14; Of which 10 CPs max. or IMs as DP master, 4 PROFINET controller maximum","Plug-in interface modules":"IF 964-DP (MLFB: 6ES7964-2AA04-0AB0)","Point-to-point connection":"No","Automatic Baud Rate Search":"No","Hardware clock (real-time)":"Yes","Number of other interfaces":"0","Number of connections, max.":"30","Number of process alarm OBs":"4; OB 40-43","Process diagnostic messages":"Yes","S7 communication, as client":"Yes","S7 communication, as server":"Yes","User data consistency, max.":"255 byte; Including user data attendant","from interface 5 V DC, max.":"90 mA; At each DP interface","Adjustable For Routing, Max.":"0","Mixed mode IM + CP permitted":"No; IM 467 not suitable for use with CP 443-5 Ext. and CP 443-1 EX4x, EX20, GX20 (in PROFINET IO mode)","Number of multicomputing OBs":"1; OB 60","Retentive And Synchronizable":"Yes","System function blocks (SFB)":"see instruction list","User data per DP slave, max.":"244 byte","With 500, 1000 Ms Grid, Max.":"10","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; OB 32-35 (shortest cycle that can be set = 500 µs)","Number of isochronous mode OBs":"3; OB 61-63","Number of expansion units, max.":"21","Number of synchronous error OBs":"2; OB 121, 122","from backplane bus 5 V DC, max.":"1.4 A","from backplane bus 5 V DC, typ.":"1.2 A","For Fixed Point Arithmetic, Typ.":"45 ns","Number of asynchronous error OBs":"9; OB 80-88","User data per address area, max.":"32 byte","from backplane bus 24 V DC, max.":"300 mA; 150 mA per DP interface","Number of subprocess images, max.":"15","Deviation per day (buffered), max.":"1.7 s; Power off","Of which IO devices with IRT, max.":"0","For Floating Point Arithmetic, Typ.":"135 ns","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","Deviation per day (unbuffered), max.":"8.6 s; For power On","Number of GD packets, receiver, max.":"16","Activation/deactivation of IO Devices":"Yes","Output current of the interface, max.":"150 mA","User data per isochronous slave, max.":"244 byte","adjustable for OP communication, max.":"0","adjustable for PG communication, max.":"0","adjustable for S7 communication, max.":"0","Device replacement without swap medium":"Yes","Number of connectable IO Devices, max.":"256","Number of GD packets, transmitter, max.":"8","Number of connectable IMs (total), max.":"6","Setpoint for the CPU communication load":"20 %","Automatic Detection Of Transmission Rate":"No","Feeding of external backup voltage to CPU":"5 V DC to 15 V DC","Local port numbers used at the system end":"0, 20, 21, 25, 80, 102, 135, 161, 34962, 34963, 34964, 65532, 65533, 65534, 65535","Limit class A, for use in industrial areas":"Yes","Number of DP masters with isochronous mode":"2","simultaneously active Alarm-S blocks, max.":"400; Simultaneously active alarm_S/SQ blocks or alarm_D/DQ blocks","CiR synchronization time, time per I/O byte":"15 µs; Time per I/O byte","Limit class B, for use in residential areas":"No","User program protection/password protection":"Yes","adjustable for S7 basic communication, max.":"0","Size of GD packet (of which consistent), max.":"1 variable","User data per job (of which consistent), max.":"240 byte","Number of connectable OPs with message processing":"31; When using alarm_S and alarm_D","Direct data exchange (slave-to-slave communication)":"No","Number of IO devices with prioritized startup, max.":"32","Number of connectable OPs without message processing":"31","Number of login stations for message functions, max.":"31; Max. 31 with alarm_S and alarm_D (OP's); max. 8 with alarm_8 and alarm_P (e.g. WinCC)","number of remote connection partners / with PROFINET CBA":"32","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","IO Devices changing during operation (partner ports), supported":"Yes","Number of IO Devices with IRT and the option \"high flexibility\"":"256","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","number of simultaneously active system functions (SFC) / with DPSYC_FR":"2","number of simultaneously active system functions (SFC) / with D_ACT_DP":"8","Number of IO Devices that can be simultaneously activated/deactivated, max.":"8","Number of pluggable S5 modules (via adapter capsule in central device), max.":"6"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2,890.65","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/a06011b3658a9c857f0c4b7d845a223e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=24185&mlfb=6ES7414-3EM05-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7414-3EM05-0AB0/alternatives.json"},"ai":{"faq":[{"question":"What is the FM (Function Module) limitation on this CPU?","answer":"The FM (Function Module) is limited by the number of slots or the number of connections, as listed in the specifications. This is a standard constraint for S7-400 CPUs — the actual limit depends on the rack size and the specific FM modules used."},{"question":"Does this CPU support CFC (Continuous Function Chart)?","answer":"Yes, CFC is supported on this CPU. That means you can use signal-flow-oriented programming for process applications, which is common in batch or continuous control."},{"question":"Will 6ES7414-3EM05-0AB0 drop into a panel specified around 6ES7516-3AN00-0AB0 without rewiring?","answer":"No — the 6ES7414-3EM05-0AB0 is an S7-400 CPU (50 mm wide, rack-based), while the 6ES7516-3AN00-0AB0 is an S7-1500 CPU (DIN-rail mount). They use different backplanes, power supplies, and form factors. A panel rewiring and rack replacement would be required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7414-3EM05-0AB0","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/6ES7414-3EM05-0AB0 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}}