{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6AG1516-3AN01-7AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6AG1516-3AN01-7AB0","canonicalUrl":"https://aoctrl.com/siemens/6AG1516-3AN01-7AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6AG1516-3AN01-7AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIPLUS S7-1500 CPU 1516-3 PN/DP, 6AG1516-3AN01-7AB0, with MRP redundancy manager, 32 kbyte I/O, MODBUS TCP, RS485, rated -40 to 70 °C.","salesMarkdown":"## Integration brief — what this CPU brings to a harsh-environment S7-1500 rack The 6AG1516-3AN01-7AB0: On the communication side, it supports MRP as a redundancy manager for ring topologies with up to 50 devices, plus MODBUS TCP and RS485 for legacy fieldbus bridging. The process image is 32 kbytes for inputs and 32 kbytes for outputs — adequate for mid-size distributed I/O. Note that while MRPD is listed, it requires IRT, and this CPU does not support IRT. If you need isochronous real-time for motion drives, the standard 6ES7516-3AN00-0AB0 (non-SIPLUS) is the correct fit. ## How it compares with the standard-temperature sibling (6ES7516-3AN00-0AB0) IRT is not supported, so MRPD is unavailable. ## Mounting and panel fit — DIN-rail checklist Width is 105 mm — the standard S7-1500 CPU slot. Height 147 mm, depth 129 mm. At temperatures below 0 °C, the display may be slow to refresh and contrast reduced, but the CPU logic continues normally — plan for remote diagnostics or avoid relying on the panel HMI in cold start conditions. Supports up to 8 communication modules/CPs (PROFIBUS, PROFINET, Ethernet) in total. Available protocols include HTTP and HTTPS for web server pages, SNMP for network monitoring, and LLDP for topology discovery. The integrated RS485 port is available via the front connector.","metaTitle":"Siemens 6AG1516-3AN01-7AB0 SIPLUS CPU, -40..70°C, MRP","metaDescription":"SIPLUS S7-1500 CPU 1516-3 PN/DP for extended temperature range -40 to 70°C. MRP redundancy manager, 32 KB I/O, MODBUS TCP, RS485. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"DCP":"Yes","FBD":"Yes","I2t":"0.02 A²·s","IRT":"No","LAD":"Yes","MRP":"Yes; as MRP redundancy manager and/or MRP client; max. number of devices in the ring: 50","SCL":"Yes","STL":"Yes","UDP":"Yes","DHCP":"No","HTTP":"Yes; Standard and user-defined pages","LLDP":"Yes","MRPD":"Yes; Requirement: IRT","Max.":"70 °C","Min.":"-40 °C","SNMP":"Yes","Type":"Hardware clock","Depth":"129 mm","GRAPH":"Yes","HTTPS":"Yes; Standard and user-defined pages","Note:":"At temperatures below 0 °C legibility may be restricted and representation of dynamic contents may be slower","Width":"105 mm","title":"6AG1516-3AN01-7AB0","Height":"147 mm","Inputs":"32 kbyte; All inputs are in the process image","MODBUS":"Yes; MODBUS TCP","Number":"16","RS 485":"Yes","TCP/IP":"Yes","Via CM":"8; A maximum of 8 CMs/CPs (PROFIBUS, PROFINET, Ethernet) can be inserted in total","Outputs":"32 kbyte; All outputs are in the process image","Present":"Yes","100 Mbps":"Yes","PID-Temp":"Yes; PID controller with integrated optimization for temperature","ERROR LED":"Yes","MAINT LED":"Yes","PID_3Step":"Yes; PID controller with integrated optimization for valves","PROFIsafe":"No","Per Probe":"40; per probe","Supported":"Yes","Variables":"Inputs/outputs, memory bits, DBs, distributed I/Os, timers, counters","Adjustable":"Yes","Integrated":"1","S7 routing":"Yes","Size, max.":"16 kbyte","Web server":"Yes","Backup time":"6 wk; At 40 °C ambient temperature, typically","Lower Limit":"adjustable minimum cycle time","PID_Compact":"Yes; Universal PID controller with integrated optimization","PROFIenergy":"Yes","Single step":"No","Upper Limit":"adjustable maximum cycle time","Via Dataset":"Yes","description":"***spare part*** SIPLUS S7-1500 CPU 1516-3 PN/DP based on 6ES7516-3AN01-0AB0 with conformal coating, -40…+70 °C, start up -20 °C, heat sink, no PS usable, central processing unit with work memory 1 MB for program and 5 MB for data, 1st interface: PROFINET IRT with 2-port switch, 2nd interface: PROFINET RT, 3rd interface: PROFIBUS, 10 ns bit performance, SIMATIC Memory Card required","Autocrossing":"Yes","Equidistance":"Yes","Number range":"0 ... 65 535","RUN/STOP LED":"Yes","Status block":"Yes; Up to 8 simultaneously (in total across all ES clients)","in AS, slave":"Yes","Per Cam Track":"160; per cam track","Shared device":"Yes","in AS, master":"Yes","to DP, master":"Yes","Motion Control":"Yes; Note: The number of axes affects the cycle time of the PLC program; selection guide via the TIA Selection Tool or SIZER","Number of keys":"6","Per Output Cam":"20; per cam","Program alarms":"Yes","Updating times":"The minimum value of the update time also depends on communication share set for PROFINET IO, on the number of IO devices, and on the quantity of configured user data","Autonegotiation":"Yes","Copy protection":"Yes","Inputs (volume)":"8 kbyte","Number of ports":"1","Weight, approx.":"1 109 g","lifecycle_stage":"current","Block protection":"Yes","Isochronous mode":"Yes","Maintenance-Free":"Yes","Media redundancy":"No","Outputs (volume)":"8 kbyte","Power loss, typ.":"7 W","RJ 45 (Ethernet)":"Yes; X2","Data length, max.":"1 472 byte","Integrated Switch":"No","Number of PtP CMs":"the number of connectable PtP CMs is only limited by the number of available slots","PROFIBUS DP slave":"No","Forcing, variables":"Peripheral inputs/outputs","High-speed counter":"Yes","PROFIBUS DP master":"Yes","PROFINET IO Device":"Yes","Per Priority Class":"24","Retentivity preset":"No","Data record routing":"Yes","PG/OP communication":"Yes","Prioritized startup":"No","on Ethernet via NTP":"Yes","ISO-on-TCP (RFC1006)":"Yes","Inrush current, max.":"2.4 A; Rated value","Mode selector switch":"1","Number of IO modules":"8 192; max. number of modules / submodules","Password for display":"Yes","Per External Encoder":"80; per external encoder","Per Positioning Axis":"160; per axis","Per Synchronous Axis":"160; per axis","Screen diagonal [cm]":"6.1 cm","Integrated (For Data)":"5 Mbyte","Number of lines, max.":"1","Number of startup OBs":"100","Open IE communication":"Yes","SIMATIC communication":"Yes","For Send Cycle Of 1 Ms":"1 ms to 512 ms","For Send Cycle Of 2 Ms":"2 ms to 512 ms","For Send Cycle Of 4 Ms":"4 ms to 512 ms","Modules per rack, max.":"32; CPU + 31 modules","Of Which In Line, Max.":"32","PROFINET IO Controller":"Yes","Retentivity adjustable":"Yes","Deviation per day, max.":"10 s; Typ.: 2 s","Number of entries, max.":"3 200","Status/control variable":"Yes","Transmission rate, max.":"12 Mbit/s","User data per job, max.":"See online help (S7 communication, user data size)","For Bit Operations, Typ.":"10 ns","Integrated (For Program)":"1 Mbyte","Number of DPV1 alarm OBs":"3","Number of clock memories":"8; 8 clock memory bit, grouped into one clock memory byte","Number of free cycle OBs":"100","Number of program alarms":"600","Number of time alarm OBs":"20","Of Which Powerfail-Proof":"500","Per Priority Class, Max.":"64 kbyte; max. 16 KB per block","For Send Cycle Of 250 μS":"250 µs to 128 ms","For Send Cycle Of 500 μS":"500 µs to 256 ms","For Word Operations, Typ.":"12 ns","Number of DP slaves, max.":"125; In total, up to 1 000 distributed I/O devices can be connected via AS-i, PROFIBUS or PROFINET","Number of delay alarm OBs":"20","Number of variables, max.":"200","Per Speed-Controlled Axis":"80; per axis","Number of S7 routing paths":"16","Number of elements (total)":"6 000; In addition to blocks such as DBs, FBs and FCs, UDTs, global constants, etc. are also regarded as elements","Number of connections, max.":"256; via integrated interfaces of the CPU and connected CPs / CMs","Number of process alarm OBs":"50","Reverse polarity protection":"Yes","S7 communication, as client":"Yes","S7 communication, as server":"Yes","Vertical Installation, Max.":"40 °C; Display: 40 °C, at an operating temperature of typically 40 °C, the display is switched off","Vertical Installation, Min.":"-40 °C; = Tmin; Startup @ -20 °C","SIMATIC memory card required":"Yes","Connection display LINK TX/RX":"Yes","Horizontal Installation, Max.":"70 °C; Display: 50 °C, at an operating temperature of typically 50 °C, the display is switched off","Horizontal Installation, Min.":"-40 °C; = Tmin (incl. condensation/frost); start-up @ -20 °C","Number of PROFIBUS interfaces":"1","Number of PROFINET interfaces":"2","Number of configurable Traces":"4; Up to 512 KB of data per trace are possible","Industrial Ethernet status LED":"Yes","Number of cyclic interrupt OBs":"20","Number of diagnostic alarm OBs":"1","Number of isochronous mode OBs":"2","Number of synchronous error OBs":"2","Of Which Status Variables, Max.":"200; per job","For Fixed Point Arithmetic, Typ.":"16 ns","Number of asynchronous error OBs":"4","Number of distributed IO systems":"64; A distributed I/O system is characterized not only by the integration of distributed I/O via PROFINET or PROFIBUS communication modules, but also by the connection of I/O via AS-i master modules or links (e.g. IE/PB-Link)","Of Which Control Variables, Max.":"200; per job","Current consumption (rated value)":"0.85 A","Infeed power to the backplane bus":"12 W","Number of subprocess images, max.":"32","Of which IO devices with IRT, max.":"64","Protection level: Write protection":"Yes","For Floating Point Arithmetic, Typ.":"64 ns","Joint commission (Team Engineering)":"Yes; Parallel online access possible for up to 8 engineering systems","Number of IO Devices per tool, max.":"8","Plug-in (SIMATIC Memory Card), max.":"32 Gbyte","Switchover time on line break, typ.":"200 ms; For MRP, bumpless for MRPD","permissible range, lower limit (DC)":"19.2 V","permissible range, upper limit (DC)":"28.8 V","Activation/deactivation of DP slaves":"Yes","Number of stations in the ring, max.":"50","Protection level: Complete protection":"Yes","Number of connectable IO Devices, max.":"32; In total, up to 1 000 distributed I/O devices can be connected via AS-i, PROFIBUS or PROFINET","Number of alarms for system diagnostics":"200","Number of slots for SIMATIC memory card":"1","Protection level: Read/write protection":"Yes","Mains/voltage failure stored energy time":"5 ms","Number of technology synchronous alarm OBs":"2","Installation altitude above sea level, max.":"5 000 m","User program protection/password protection":"Yes","Number of configurable program messages, max.":"10 000","Number of connectable IO Devices for RT, max.":"32","Number of connections reserved for ES/HMI/web":"10","Protection against fouling acc. to EN 60664-3":"Yes; Type 1 protection","Number of alarms for motion technology objects":"160","Number of connections via integrated interfaces":"128","Several Passive Connections Per Port, Supported":"Yes","Number of IO Controllers with shared device, max.":"4","With IRT and parameterization of \"odd\" send cycles":"Update time = set \"odd\" send clock (any multiple of 125 µs: 375 µs, 625 µs ... 3 875 µs)","Power consumption from the backplane bus (balanced)":"6.7 W","Ambient air temperature-barometric pressure-altitude":"Tmin ... Tmax at 1 140 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 login stations for message functions, max.":"32","Retentive data area (incl. timers, counters, flags), max.":"512 kbyte; In total; available retentive memory for bit memories, timers, counters, DBs, and technology data (axes): 472 KB","Resistant to commercially available coolants and lubricants":"Yes; Incl. diesel and oil droplets in the air","Number of available Motion Control resources for technology objects":"4 800","Number of positioning axes at motion control cycle of 4 ms (typical value)":"5","Number of positioning axes at motion control cycle of 8 ms (typical value)":"12","Number of IO Devices that can be simultaneously activated/deactivated, max.":"8; in total across all interfaces","Environmental conditions for process, measuring and control systems acc. to ANSI/ISA-71.04":"Yes; Level GX group A/B (excluding trichlorethylene; harmful gas concentrations up to the limits of EN 60721-3-3 class 3C4 permissible); level LC3 (salt spray) and level LB3 (oil)","Qualification and Performance of Electrical Insulating Compound for Printed Board Assemblies according to IPC-CC-830A":"Yes; Conformal coating, Class A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/2ed26864a4538689e263fb80d426fcbf.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=689865&mlfb=6AG1516-3AN01-7AB0"},"ai":{"faq":[{"question":"What does DCP (Yes) mean for this CPU?","answer":"DCP (Discovery and Configuration Protocol) is supported, so the CPU can be found and configured via PROFINET without a separate IP setup tool — useful for fast field replacement or initial network commissioning."},{"question":"What does FBD (Yes) indicate?","answer":"FBD (Function Block Diagram) is one of the programming languages supported in TIA Portal for this CPU, alongside LAD, STL, SCL, and GRAPH. That means any existing FBD code can run unmodified."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6AG1516-3AN01-7AB0","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/6AG1516-3AN01-7AB0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}