{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7516-2PN00-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7516-2PN00-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7516-2PN00-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7516-2PN00-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens S7-1500 CPU 1516-2 PN, 6ES7516-2PN00-0AB0, dual PN interface, MRP manager, MODBUS TCP, 32 kB I/O, -40…70 °C.","salesMarkdown":"## Mid-range S7-1500 with dual PN and MRP ring capability The 6ES7516-2PN00-0AB0: Programming via LAD, FBD, STL, SCL, or GRAPH — all supported natively. MODBUS TCP is also baked in, so you can talk to legacy instruments or drives without an external gateway. Process image is 32 kbytes for inputs and 32 kbytes for outputs — enough for a medium-sized machine with distributed I/O over PROFINET. Temperature tolerance: -40 to 70 °C ambient, so it lives in cold warehouses or warm cabinets without derating. ## Integration notes from the field Supports I&M data (I&M0 to I&M3) for asset tracking and consistent device replacement. Forcing of I/O is allowed during commissioning — useful for quick tests. Two onboard PROFINET ports share a single MAC; layer 2 forwarding is handled internally. No external passive device needed for MRP rings — the CPU can act as the ring manager.","metaTitle":"Siemens 6ES7516-2PN00-0AB0, S7-1500 CPU 1516-2 PN","metaDescription":"S7-1500 CPU with dual PROFINET ports, MRP manager, MODBUS TCP, 32 KB I/O image, -40 to 70°C. Sourced via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"DCP":"Yes","DNS":"Yes","FBD":"Yes","I2t":"0.001 A²·s","IRT":"No","LAD":"Yes","MRP":"Yes; MRP Automanager according to IEC 62439-2 Edition 2.0, MRP Manager; MRP Client","SCL":"Yes","STL":"Yes","UDP":"Yes","DHCP":"Yes","HTTP":"Yes; Standard and user pages","LLDP":"Yes","MRPD":"Yes; Requirement: IRT","Max.":"70 °C","Min.":"-40 °C","SNMP":"Yes","Type":"Hardware clock","Depth":"65 mm","GRAPH":"Yes","HTTPS":"Yes; Standard and user pages","Width":"135 mm","title":"6ES7516-2PN00-0AB0","Height":"130 mm","Inputs":"32 kbyte; All inputs are in the process image","MODBUS":"Yes; MODBUS TCP","Number":"16","TCP/IP":"Yes","Via CM":"0","Forcing":"Yes","Outputs":"32 kbyte; All outputs are in the process image","Present":"Yes","100 Mbps":"Yes","I&M data":"Yes; I&M0 to I&M3","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","Supported":"Yes","Variables":"Inputs/outputs, memory bits, DBs, distributed I/Os, timers, counters","Adjustable":"Yes","Encryption":"Yes; Optional","Integrated":"2","S7 routing":"Yes","Size, max.":"16 kbyte","Web server":"Yes","Backup time":"6 wk; At 40 °C ambient temperature, typically","IP protocol":"Yes; IPv4","Lower Limit":"adjustable minimum cycle time","PID_Compact":"Yes; Universal PID controller with integrated optimization","PROFIenergy":"Yes; per user program","Single step":"No","Upper Limit":"adjustable maximum cycle time","Via Dataset":"No","description":"SIMATIC DP, CPU 1516PRO-2 PN for ET 200pro, Central processing unit with Work memory 1 MB for program and 5 MB for data, 1st interface: PROFINET IRT with 3-port switch, 2nd interface: PROFINET RT, 10 ns bit performance, degree of protection: IP65/67, SIMATIC Memory Card required, Connection module required","Autocrossing":"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","OPC UA Client":"Yes","OPC UA Server":"Yes; Data access (read, write, subscribe), method call, custom address space","Per Cam Track":"160","Shared device":"Yes","UDP multicast":"Yes; Max. 5 multicast circuits","in AS, master":"Yes","Motion Control":"Yes; Note: The number of technology objects affects the cycle time of the PLC program; selection guide via the TIA Selection Tool","Per Output Cam":"20","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; 1x M12","Weight, approx.":"614 g","lifecycle_stage":"current","Block protection":"Yes","Firmware version":"V2.9","Isochronous mode":"No","Maintenance-Free":"Yes","Media redundancy":"Yes; only via 1st interface (X1)","Outputs (volume)":"8 kbyte","Power loss, typ.":"5.3 W","RJ 45 (Ethernet)":"No","Rated value (DC)":"24 V","Data length, max.":"2 kbyte; 1 472 bytes for UDP broadcast","H-Sync forwarding":"Yes","Integrated Switch":"No","Security policies":"Available security policies: None, Basic128Rsa15, Basic256Rsa15, Basic256Sha256","Forcing, variables":"Peripheral inputs/outputs","High-speed counter":"Yes","PROFINET IO Device":"Yes","Per Priority Class":"24","Retentivity preset":"No","PG/OP communication":"Yes; encryption with TLS V1.3 pre-selected","Prioritized startup":"No","User authentication":"\"anonymous\" or by user name & password","on Ethernet via NTP":"Yes","Direct data exchange":"No","HW functional status":"FS02","ISO-on-TCP (RFC1006)":"Yes","Inrush current, max.":"0.4 A; Rated value","Mode selector switch":"1","Number of IO modules":"8 192; max. number of modules / submodules","Per External Encoder":"80","Per Positioning Axis":"80","Per Synchronous Axis":"160","Alarms and Conditions":"Yes","Integrated (For Data)":"5 Mbyte","Number of breakpoints":"8","Number of lines, max.":"1","Number of startup OBs":"100","Open IE communication":"Yes; Optionally also encrypted","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.":"16; Expansion width max. 1.2 m","Of Which In Line, Max.":"32","PROFINET IO Controller":"Yes","Retentivity adjustable":"Yes","Asset management record":"Yes; per user program","Deviation per day, max.":"10 s; Typ.: 2 s","Number of entries, max.":"3 200","Sampling interval, min.":"100 ms","Status/control variable":"Yes","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":"1 000","Number of sessions, max.":"48","Number of time alarm OBs":"20","Of Which Powerfail-Proof":"500","Per Priority Class, Max.":"64 kbyte; max. 16 KB per block","Runtime license required":"Yes; \"Medium\" license required","Current consumption, max.":"0.4 A","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 delay alarm OBs":"20","Number of variables, max.":"200","Per Speed-Controlled Axis":"40","Publishing interval, min.":"200 ms","Application authentication":"Yes","Number of S7 routing paths":"16","Number of elements (total)":"8 000; Blocks (OB, FB, FC, DB) and UDTs","Number of connections, max.":"10","Number of process alarm OBs":"50","Reverse polarity protection":"Yes","S7 communication, as client":"Yes","S7 communication, as server":"Yes","Vertical Installation, Max.":"55 °C","Vertical Installation, Min.":"-25 °C","SIMATIC memory card required":"Yes","Connection display LINK TX/RX":"Yes","Horizontal Installation, Max.":"55 °C","Horizontal Installation, Min.":"-25 °C","Number of PROFIBUS interfaces":"0","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","MRP interconnection, supported":"Yes; as MRP ring node according to IEC 62439-2 Edition 3.0","Number of cyclic interrupt OBs":"20; With minimum OB 3x cycle of 500 µs","Number of diagnostic alarm OBs":"1","Number of isochronous mode OBs":"1","Number of server methods, max.":"50","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)":"0.31 A","Infeed power to the backplane bus":"2.275 W","Number of server interfaces, max.":"10 of each \"Server interfaces\" / \"Companion specification\" type and 20 of the type \"Reference namespace\"","Number of registerable nodes, max.":"20 000","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)":"20.4 V","permissible range, upper limit (DC)":"28.8 V","Number of accessible variables, max.":"100 000","Number of stations in the ring, max.":"50","activation/deactivation of I-devices":"Yes; per user program","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 subscriptions per session, max.":"20","Monitoring of the supply voltage (PWR-LED)":"Yes; green \"24 V DC\" LED","Number of technology synchronous alarm OBs":"2","Installation altitude above sea level, max.":"5 000 m; Restrictions for installation altitudes > 2 000 m, see manual","Number of monitored items, recommended max.":"2 000; for 1 s sampling interval and 1 s send interval","User program protection/password protection":"Yes","Number of configurable program messages, max.":"10 000; Program messages are generated by the \"Program_Alarm\" block, ProDiag or GRAPH","Number of connectable IO Devices for RT, max.":"32","Number of connections reserved for ES/HMI/web":"10","Protection Of Confidential Configuration Data":"Yes","Number of alarms for motion technology objects":"160","Number of connections via integrated interfaces":"128","Several Passive Connections Per Port, Supported":"Yes","Number of inputs/outputs per server method, max.":"20","Number of loadable program messages in RUN, max.":"5 000","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)","Number of login stations for message functions, max.":"32","STEP 7 TIA Portal configurable/integrated from version":"V17 (FW V2.9) / V14 (FW V2.0) or higher","Number of nodes for user-defined server interfaces, max.":"5 000","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","Number of nodes of the client interfaces, recommended max.":"2 000","Number of inputs/outputs when calling OPC_UA_MethodCall, max.":"20","Number of registerable method calls of OPC_UA_MethodCall, max.":"100","Number of available Motion Control resources for technology objects":"2 400","Number of elements for one call of OPC_UA_MethodGetHandleList, max.":"100","Number of elements for one call of OPC_UA_NameSpaceGetIndexList, max.":"20","Number of positioning axes at motion control cycle of 4 ms (typical value)":"7","Number of positioning axes at motion control cycle of 8 ms (typical value)":"14","Number of IO Devices that can be simultaneously activated/deactivated, max.":"8; in total across all interfaces","Number of simultaneous calls of the client instructions for data access, per connection, max.":"5","Number of simultaneous calls of the client instructions for session management, per connection, max.":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ce9ac6d45726561f85da09d9c983a054.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=725705&mlfb=6ES7516-2PN00-0AB0"},"ai":{"faq":[{"question":"When sourcing 6ES7516-2PN00-0AB0, what's the closest functional second-source — 6ES7516-3AN01-0AB0?","answer":"The 6ES7516-3AN01-0AB0 is a direct family sibling with identical form factor and basic specs, but it adds IRT support. That makes it the functional upgrade where deterministic motion or MRPD is required. For projects that don't need IRT, this -2PN00 is the cost-optimised drop-in."},{"question":"What is 6ES7516-2PN00-0AB0's listed DCP?","answer":"DCP is supported (Discovery and Configuration Protocol). That means you can set the device name and IP address via the network using Siemens tools like PRONETA without needing a separate interface."},{"question":"What is 6ES7516-2PN00-0AB0's listed DNS?","answer":"DNS is supported. The CPU can resolve hostnames to IP addresses over the PROFINET network, simplifying tag-based addressing in larger plants."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7516-2PN00-0AB0","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/6ES7516-2PN00-0AB0 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}}