{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7318-3FL01-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7318-3FL01-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7318-3FL01-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7318-3FL01-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-300, CPU 318-3FL01-0AB0 SFB, FM 8, CFC Yes, FBD Yes, I2t 1.2 A²·s, IRT Yes, LAD Yes, SCL Yes, STL Yes, UDP Yes, PROFIsafe Yes, 244 byte inputs, 244 byte outputs, 0–60 °C.","salesMarkdown":"## CPU 318-3FL01-0AB0 — SFB with PROFIsafe and IRT The Siemens 6ES7318-3FL01-0AB0 is a SIMATIC S7-300 CPU 318 SFB (Safety Fault-Proof) unit designed for fail-safe automation. It carries FM 8 (8 function blocks) and supports CFC, FBD, LAD, SCL, STL, GRAPH, and HiGraph programming, all under STEP 7 V5.5 or higher. The integrated PROFINET interface enables IRT (isochronous real-time) communication — critical for synchronized motion axes — and UDP/TCP/IP with loadable function blocks. PROFIsafe is supported natively, meaning this CPU can run safety programs (up to SIL 3) over the same PROFINET cable as standard control, without a separate safety bus. ## I/O capacity and communication The CPU handles 244 bytes of process input and 244 bytes of output data, with a maximum of 32 modules overall. It includes 4 counters (preset 10) and supports forcing, retentive memory (must be restarted at each restart), and routing. Communication interfaces include RS 485, PROFINET (client/server), and up to 4 CP connections for LAN, 10 for PtP, and 8 for additional PROFIBUS via CP. No MPI or DPV1 is available — plan your network topology accordingly. The GSD file is available from Siemens for PROFIBUS integration. ## Physical and environmental Dimensions are 120 mm wide × 125 mm high × 130 mm deep. Operating temperature range is 0 °C to 60 °C. The I2t rating is 1.2 A²·s, and the CPU is isolated.","metaTitle":"Siemens 6ES7318-3FL01-0AB0 SFB, FM 8, PROFIsafe, IRT","metaDescription":"Siemens SIMATIC S7-300 CPU 318-3FL01-0AB0 SFB with FM 8, PROFIsafe, IRT, 244 byte I/O, 0–60 °C. 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":"1.2 A²·s","IRT":"Yes","LAD":"Yes","MPI":"No","SCL":"Yes","STL":"Yes","UDP":"Yes; via integrated PROFINET interface and loadable FBs","DPV1":"No","Max.":"60 °C","Min.":"0 °C","Type":"SFB","Depth":"130 mm","GRAPH":"Yes","Width":"120 mm","Height":"125 mm","Inputs":"244 byte","Number":"4","Preset":"10","RS 485":"Yes","STEP 7":"Yes; V5.5 or higher","TCP/IP":"Yes; via integrated PROFINET interface and loadable FBs","via CP":"4","CP, LAN":"10","CP, PtP":"8","Forcing":"Yes","Outputs":"244 byte","Overall":"32","Present":"Yes","Routing":"Yes","GSD file":"The latest GSD file is available at: http://www.siemens.com/profibus-gsd","Isolated":"Yes","As Client":"Yes; via integrated PROFINET interface and loadable FB or via CP and loadable FB","As Server":"Yes","HiGraph®":"Yes","PROFIsafe":"Yes","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":"2","Size, max.":"8 192 byte","Web server":"Yes","Backup time":"6 wk; At 40 °C ambient temperature","Command set":"see instruction list","Granularity":"1 h","Lower Limit":"10 ms","PROFIenergy":"Yes; With SFB 73 / 74 prepared for loadable PROFIenergy standard FB for I-Device","Racks, max.":"4","SYNC/FREEZE":"Yes","Send cycles":"250 μs, 500 μs,1 ms; 2 ms, 4 ms (not in the case of IRT with \"high flexibility\" option)","Single step":"Yes","Upper Limit":"9 990 s","Autocrossing":"Yes","Equidistance":"Yes","Inputs, max.":"1 440 byte; Per IO Controller with shared device","Number, max.":"64","PROFINET CBA":"Yes","Status block":"Yes; Up to 2 simultaneously","in AS, slave":"Yes","to DP, slave":"Yes","Outputs, max.":"1 440 byte; Per IO Controller with shared device","Plug-in (MMC)":"Yes","Shared device":"Yes","Updating time":"250 µs to 512 ms (depending on the operating mode, see Manual \"S7-300 CPU 31xC and CPU 31x, technical Data\" for more details)","in AS, master":"Yes","to DP, master":"Yes; With DP slave only slave clock","to MPI, slave":"Yes","Interface type":"PROFINET","Nesting levels":"8","to MPI, master":"Yes","Autonegotiation":"Yes","Can Be Read Out":"Yes","Inputs, default":"1 024 byte","Number of ports":"2","Range of values":"0 to 2^31 hours (when using SFC 101)","Weight, approx.":"1 250 g","Without Battery":"Yes","lifecycle_stage":"eol_hot","Block encryption":"Yes; With S7 block Privacy","Firmware version":"V3.2","Isochronous mode":"No","Media redundancy":"Yes","Of Which Central":"256","Outputs, default":"1 024 byte","Power loss, typ.":"14 W","RJ 45 (Ethernet)":"Yes","Rated value (DC)":"24 V","S7 communication":"Yes; with loadable FBs, max. configurable connections: 16, max. number of instances: 32","Data length, max.":"1 472 byte","Integrated Switch":"Yes","PROFIBUS DP slave":"No","Repeat rate, min.":"1 s","Address area, max.":"32","Forcing, variables":"Inputs, outputs","Inputs, adjustable":"8 192 byte","PROFIBUS DP master":"No","PROFINET IO Device":"Yes; Also simultaneously with IO Controller functionality","Per Priority Class":"16","Retentivity preset":"Yes","Usable For Routing":"X1 as MPI: max. 10; X1 as DP master: max. 24; X1 as DP slave (active): max. 14; X2 as DP master: max. 24; X2 as DP slave (active): max. 14; X3 as PROFINET: 48 max.","Cyclic Transmission":"Yes","Data record routing":"Yes","Number/Number range":"0 to 3","Outputs, adjustable":"8 192 byte","PG/OP communication":"Yes","Plug-in (MMC), max.":"8 Mbyte","Prioritized startup":"Yes","Programming package":"STEP 7 V5.5 or higher, Distributed Safety V5.4 SP4","on Ethernet via NTP":"Yes; As client","Acyclic Transmission":"Yes","HW functional status":"01","ISO-on-TCP (RFC1006)":"Yes; via integrated PROFINET interface and loadable FBs","Inrush current, typ.":"4 A","Number of breakpoints":"4","Number of startup OBs":"1; OB 100","Open IE communication":"Yes; Via TCP/IP, ISO on TCP, and UDP","Retentivity available":"Yes; From MB 0 to MB 8 191","User-defined websites":"Yes","Modules per rack, max.":"8","Number of HTTP clients":"5","Of Which In Line, Max.":"256","PROFINET IO Controller":"Yes; Also simultaneously with I-Device functionality","Retentivity adjustable":"Yes; via non-retain property on DB","S7 basic communication":"No","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.":"100 Mbit/s","User data per job, max.":"See online help of STEP 7 (shared parameters of the SFBs/FBs and of the SFCs/FCs of S7 Communication)","For Bit Operations, Typ.":"0.004 µs","Number of DPV1 alarm OBs":"3; OB 55, 56, 57","Number of GD loops, max.":"8","Number of analog outputs":"0","Number of blocks (total)":"4 096; (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","Per Priority Class, Max.":"32 768 byte; Max. 2048 bytes per block","Size of GD packets, max.":"22 byte","For Word Operations, Typ.":"0.01 µs","Global data communication":"No","Number of DP slaves, max.":"124","Number of delay alarm OBs":"2; OB 20, 21","Number of digital outputs":"0","Number of variables, max.":"10","Point-to-point connection":"No","Automatic Baud Rate Search":"Yes; only with passive interface","Hardware clock (real-time)":"Yes","Number of GD packets, max.":"8","Number of RS 422 interfaces":"0","Number of RS 485 interfaces":"2","Number of connections, max.":"32","Number of process alarm OBs":"1; OB 40","Process diagnostic messages":"Yes","S7 communication, as client":"No","S7 communication, as server":"Yes; Connection configured on one side only","User data consistency, max.":"1 024 byte","usable for OP communication":"31","usable for PG communication":"31","usable for S7 communication":"16","Retentive And Synchronizable":"Yes","System function blocks (SFB)":"see instruction list","Number of PROFINET interfaces":"1","User data per submodule, max.":"1 024 byte","additional within an error OB":"4","reserved for OP communication":"1","reserved for PG communication":"1","reserved for S7 communication":"0","Keep-alive function, supported":"Yes","Number of cyclic interrupt OBs":"4; OB 32, 33, 34, 35 (OB 35: smallest settable clock pulse = 500 µs)","Number of isochronous mode OBs":"1; OB 61","Number of synchronous error OBs":"2; OB 121, 122","Of Which Status Variables, Max.":"30","Total Number Of Instances, Max.":"32","For Fixed Point Arithmetic, Typ.":"0.01 µs","Number of asynchronous error OBs":"6; OB 80, 82, 83, 85, 86, 87 (OB83 only for PROFINET IO)","Of Which Control Variables, Max.":"14","User data per address area, max.":"32 byte","Current consumption (rated value)":"1 250 mA","Number of subprocess images, max.":"1; With PROFINET IO, the length of the user data is limited to 1600 bytes","usable for S7 basic communication":"30","Of which IO devices with IRT, max.":"64","For Floating Point Arithmetic, Typ.":"0.04 µs","Number of IO Devices per tool, max.":"8","Switchover time on line break, typ.":"200 ms; PROFINET MRP","permissible range, lower limit (DC)":"19.2 V","permissible range, upper limit (DC)":"28.8 V","reserved for S7 basic communication":"0","Activation/deactivation of DP slaves":"Yes","Number of GD packets, receiver, max.":"8","Number of stations in the ring, max.":"50","Activation/deactivation of IO Devices":"Yes","Output current of the interface, max.":"200 mA","adjustable for OP communication, max.":"31","adjustable for OP communication, min.":"1","adjustable for PG communication, max.":"31","adjustable for PG communication, min.":"1","adjustable for S7 communication, max.":"16","adjustable for S7 communication, min.":"0","Device replacement without swap medium":"Yes","Number of connectable IO Devices, max.":"256","Number of GD packets, transmitter, max.":"8","Number of entries readable in RUN, max.":"499","Setpoint for the CPU communication load":"20 %","Automatic Detection Of Transmission Rate":"Yes; 10/100 Mbit/s","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":"1","Data length for connection type 01H, max.":"1 460 byte","Data length for connection type 11H, max.":"32 768 byte","Local port numbers used at the system end":"0, 20, 21, 23, 25, 80, 102, 135, 161, 443, 8080, 34962, 34963, 34964, 65532, 65533, 65534, 65535","Change of IP address at runtime, supported":"Yes","simultaneously active Alarm-S blocks, max.":"300","User program protection/password protection":"Yes","adjustable for S7 basic communication, max.":"30","adjustable for S7 basic communication, min.":"0","Number of connectable IO Devices for RT, max.":"256","Size of GD packet (of which consistent), max.":"22 byte","User data per job (of which consistent), max.":"76 byte; 76 bytes (with X_SEND or X_RCV); 64 bytes (with X_PUT or X_GET as server)","Current consumption (in no-load operation), typ.":"500 mA","Number of IO Controllers with shared device, max.":"2","Direct data exchange (slave-to-slave communication)":"Yes","Number of IO devices with prioritized startup, max.":"32","Number of login stations for message functions, max.":"32; 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","number of remote connection partners / with PROFINET CBA":"32","Retentive data area (incl. timers, counters, flags), max.":"700 kbyte","External Protection For Power Supply Lines (Recommendation)":"2 A min.","IO Devices changing during operation (partner ports), supported":"Yes","Number of IO Devices with IRT and the option \"high flexibility\"":"256","number of coupled PROFIBUS devices / with PROFIBUS functionality":"32","Number of DP slaves that can be simultaneously activated/deactivated, max.":"8","Number of IO Devices that can be simultaneously activated/deactivated, max.":"8"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2,095.50","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/a8d69914ce4bf3da3f1d4962e9e9db2d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=58556&mlfb=6ES7318-3FL01-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7318-3FL01-0AB0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 6ES7318-3FL01-0AB0 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is 6ES7318-3FL01-0AB0's listed FM (8) on this component line?","answer":"FM 8 means the CPU supports 8 function blocks in its fail-safe program structure, used for safety-related logic such as emergency stops, light curtains, and two-hand controls."},{"question":"What is 6ES7318-3FL01-0AB0's listed CFC (Yes) on this component line?","answer":"CFC (Continuous Function Chart) support means you can program the CPU graphically by connecting function blocks, rather than writing ladder or statement list code — useful for process-oriented logic."},{"question":"What compliance documentation does this brand provide for 6ES7318-3FL01-0AB0 (RoHS, REACH, UL, IEC)?","answer":"The evidence does not list specific compliance documentation for this order code. Siemens typically provides RoHS, REACH, and CE declarations for SIMATIC S7-300 CPUs — request the declaration of conformity from your distributor if required for your project."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7318-3FL01-0AB0","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/6ES7318-3FL01-0AB0 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}}