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6ES7516-3UN00-0AB0

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Combining fail-safe logic and technology functions, Siemens 6ES7516-3UN00-0AB0 is a SIMATIC S7-1500TF CPU 1516TF-3 PN/DP with PROFINET and PROFIBUS.
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Technical specifications for 6ES7516-3UN00-0AB0

  • Manufacturer:
    Siemens
  • Part Number:
    6ES7516-3UN00-0AB0
  • Product Family:
    Siemens Simatic S7-1500
  • Product Type:
    SIMATIC S7-1500TF CPU 1516TF-3 PN/DP Central Processing Unit
  • Stock:
    1
  • CPU Designation:
    1516TF-3 PN/DP
  • Program Work Memory:
    3MB
  • Data Work Memory:
    7.5MB
  • Bit Performance:
    6ns
  • Memory Card:
    SIMATIC Memory Card required
  • PROFINET Interfaces:
    2
  • PROFINET IRT Ports:
    2-port switched X1
  • Independent Ethernet:
    Single-port X2
  • PROFIBUS Interfaces:
    1
  • PROFINET IO Controllers:
    2 integrated
  • Integrated DP Masters:
    1
  • Maximum Modules per Rack:
    32 including CPU
  • Configuration Control:
    Supported by data record
  • Rated Supply:
    24V DC
  • Safety Capability:
    SIL 3 / PL e in approved configuration
  • Weight:
    4.612 lbs (2.092 kg)
  • Estimated shipping dimensions:
    15.8x15.9x8.4cm
  • Tariff Code:
    85371091
  • Country of origin:
    Germany
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Interface Roles Memory Flow Safety Scope Engineering Match

Features:

  • The TF processor runs standard control, fail-safe logic, and technology functions on one S7-1500 CPU.
  • Three interface groups divide deterministic PROFINET, independent Ethernet, and PROFIBUS communication.
  • A required SIMATIC Memory Card holds the loadable project outside the separate program and data work-memory areas.
Siemens 6ES7516-3UN00-0AB0 connects synchronized I/O through X1 while X2 remains available for a separate Ethernet relationship.

The PROFIBUS path on 6ES7516-3UN00-0AB0 keeps established DP stations available without sharing the switched IRT ports.

Firmware and TIA Portal version matching define which configuration, diagnostic, and communication functions can be commissioned on 6ES7516-3UN00-0AB0.

The Siemens 6ES7516-3UN00-0AB0 CPU 1516TF-3 PN/DP may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6ES7516-3UN00-0AB0 CPU 1516TF-3 PN/DP Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

Three separate communication paths

  • X1 network: The two-port switched interface carries PROFINET IRT and the associated IO-controller traffic.
  • X2 network: The independent Ethernet port creates a second IP relationship without using an X1 switch port.
  • X3 fieldbus: The PROFIBUS interface maintains a separate DP segment for compatible distributed stations.
  • Traffic planning: Projects assign each device to the interface whose timing and protocol match its role.
,

From project storage to execution

  • Load memory: The required SIMATIC Memory Card carries the loadable project and CPU startup information.
  • Program area: Executable blocks move into the program work-memory allocation during operation.
  • Data area: Runtime values occupy a larger, separately stated data-memory space rather than sharing the program allocation.
  • Retention choice: Only data selected within the documented retentive limits remains through the relevant restart condition.

Where fail-safe execution applies

  • F-program: Safety blocks execute in the fail-safe portion of the TF CPU rather than in an external safety processor.
  • Approved I/O: The safety rating depends on the configured fail-safe devices and their validated communication path.
  • Standard logic: Ordinary program blocks remain standard control functions even though they run on the same CPU.
  • Certification boundary: SIL 3 and PL e describe the approved safety configuration, not every function exposed by the controller.

Firmware and project alignment

  • Firmware level: The installed CPU firmware determines the TIA Portal release required for configuration.
  • Hardware catalog: The project must contain the matching CPU order number and supported firmware entry.
  • Configuration control: Data-record control can adapt the configured station structure within the documented rules.
  • Service record: Recording firmware, memory-card contents, and project version reduces ambiguity during controller exchange.
Description
Siemens 6ES7516-3UN00-0AB0 is a SIMATIC S7-1500TF CPU 1516TF-3 PN/DP central processing unit that combines standard automation, fail-safe program execution, and technology functions. It coordinates local and distributed I/O while the technology objects handle the configured motion functions.

Communication on 6ES7516-3UN00-0AB0 is split across three physical paths. X1 provides PROFINET IRT through a two-port switch, X2 is an independent Ethernet interface, and X3 connects PROFIBUS stations; this division keeps synchronized I/O traffic, secondary Ethernet communication, and legacy fieldbus devices on their assigned interfaces.

Program and runtime data occupy separate work-memory areas in 6ES7516-3UN00-0AB0. The current data sheet assigns 3 MB to the program and 7.5 MB to data, while the removable SIMATIC Memory Card is required for load memory and the project stored outside active work memory.

Engineering boundaries for 6ES7516-3UN00-0AB0 follow the installed firmware. The CPU supports configuration control by data record, maintains diagnostic and trace resources, and requires the TIA Portal level listed for that firmware rather than an arbitrary STEP 7 release.

The fail-safe portion of 6ES7516-3UN00-0AB0 reaches SIL 3 and Performance Level e only inside the approved safety configuration. Those ratings describe the configured safety system and do not convert ordinary network or program functions into safety functions.
Alternative Names
6ES75163UN000AB0 6ES7516 3UN00 0AB0 6ES7 516-3UN00-0AB0 Siemens 6ES75163UN000AB0 CPU 1516TF-3 PN DP 6ES7516-3UN00-0AB0 SIMATIC S7-1500TF 6ES7516-3UN00-0AB0 Siemens 1516TF 6ES7516 3UN00 0AB0 6ES7516-3UNOO-OABO
Technical notes
Siemens 6ES7516-3UN00-0AB0 is a TF-class S7-1500 CPU with fail-safe execution, technology objects, PROFINET IRT, Ethernet, and PROFIBUS paths.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Why are X1 and X2 kept separate when commissioning 6ES7516-3UN00-0AB0?
On 6ES7516-3UN00-0AB0, X1 is the switched PROFINET IRT path while X2 is an independent Ethernet interface, so each needs its own project assignment.
Can 6ES7516-3UN00-0AB0 start without a SIMATIC Memory Card?
No. Siemens specifies a SIMATIC Memory Card as required for 6ES7516-3UN00-0AB0.
Which information should be captured before replacing 6ES7516-3UN00-0AB0?
Record the 6ES7516-3UN00-0AB0 firmware, TIA Portal project version, memory-card contents, interface addresses, and safety configuration.
Does the PROFIBUS port on 6ES7516-3UN00-0AB0 share the PROFINET device count?
No. The 6ES7516-3UN00-0AB0 DP master and PROFINET IO-controller resources are configured as separate subsystems.
How should a memory alarm on 6ES7516-3UN00-0AB0 be interpreted?
Check whether the 6ES7516-3UN00-0AB0 limit concerns program work memory, data work memory, retentive data, or the separate memory card before changing the project.
When do the SIL 3 and PL e ratings apply to 6ES7516-3UN00-0AB0?
They apply when 6ES7516-3UN00-0AB0 is engineered and operated inside the approved fail-safe system configuration.