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6ES7318-3EL00-0AB0

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Within the SIMATIC S7-300 platform, Siemens 6ES7318-3EL00-0AB0 is a CPU 319-3 PN/DP that executes control logic across MPI/DP, PROFIBUS DP and PROFINET networks.
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Technical specifications for 6ES7318-3EL00-0AB0

  • Manufacturer:
    Siemens
  • Part Number:
    6ES7318-3EL00-0AB0
  • Product Family:
    Siemens Simatic S7-300
  • Product Type:
    SIMATIC S7-300 CPU 319-3 PN/DP Central Processing Unit
  • Stock:
    1
  • Work Memory:
    1.4 MB
  • Retentive Memory:
    700 KB
  • Memory Card:
    SIMATIC MMC required; up to 8 MB
  • Rated Supply:
    24 V DC
  • Permitted Supply Range:
    20.4 to 28.8 V DC
  • Rated Current:
    1,050 mA
  • No-load Current:
    Typically 400 mA
  • Power Loss:
    14 W
  • Bit Processing Time:
    0.01 µs
  • Floating-point Processing Time:
    0.04 µs
  • Process-image Inputs:
    8,192 bytes
  • Process-image Outputs:
    8,192 bytes
  • Integrated DP Masters:
    2
  • PROFINET Interface:
    10/100 Mbit/s RJ45
  • Ethernet Services:
    TCP/IP, ISO-on-TCP and UDP
  • Diagnostic Buffer:
    500 entries; 100 power-failure protected
  • Operating Temperature:
    0 to 60 °C
  • Weight:
    2.934 lbs (1.331 kg)
  • Estimated shipping dimensions:
    14.9x13.2x13cm
  • 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 Memory Retention Dual DP Roles PROFINET Services Commissioning Tools

Features:

  • Siemens 6ES7318-3EL00-0AB0 executes S7-300 control logic with 1.4 MB of work memory.
  • Two serial fieldbus interfaces and one PROFINET port separate three communication paths.
  • A required Micro Memory Card provides load-memory and battery-free retention functions.
The CPU combines fast instruction execution with an S7-300 memory model that distinguishes work memory, retained content and MMC-backed load data.

MPI or DP communication can occupy the first serial path while a second DP master/slave interface remains available for another fieldbus segment.

The Ethernet port adds PROFINET IO-controller and open communication services, with its own addressing and commissioning requirements.

The Siemens 6ES7318-3EL00-0AB0 SIMATIC S7-300 CPU 319-3 PN/DP Central Processing Unit may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6ES7318-3EL00-0AB0 SIMATIC S7-300 CPU 319-3 PN/DP Central Processing Unit 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.

Work, load and retained data

  • Execution area: Work memory holds the program and data required while the CPU is running.
  • Load area: The Micro Memory Card carries the load-memory content used to start and restore the project.
  • Retentive subset: Configured retained values persist through the documented restart conditions without a backup battery.
  • Card dependency: The CPU requires a matching MMC rather than treating it as an optional archive device.

Separating the fieldbus segments

  • First interface: The shared MPI/DP port can serve programming access or a configured PROFIBUS network.
  • Second interface: A dedicated DP master/slave port provides another independent fieldbus path.
  • Station planning: Each segment keeps its own addresses, transmission settings and connected nodes.
  • Role selection: Master or slave operation must match the STEP 7 hardware configuration for that interface.

Industrial Ethernet functions

  • IO controller: The CPU can cyclically exchange process data with configured PROFINET IO devices.
  • Open communication: TCP/IP, ISO-on-TCP and UDP provide separate message-oriented Ethernet services.
  • Physical link: The RJ45 port connects the controller to a 10/100 Mbit/s Industrial Ethernet segment.
  • Address agreement: Device names, IP settings and project assignments must refer to the same network configuration.

Project and diagnostic access

  • Engineering version: The CPU requires the documented STEP 7 release and hardware support package.
  • Online view: Status and control functions expose program and process states during commissioning.
  • Diagnostic history: The buffer records controller and module events, including a protected subset across power failure.
  • Forced signals: Forcing is available as a controlled commissioning function and must be cleared before normal operation.
Description
Siemens 6ES7318-3EL00-0AB0 is a SIMATIC S7-300 CPU 319-3 PN/DP central processing unit. It runs the user program while providing three integrated communication paths for controller, fieldbus and Industrial Ethernet connections.

Program and data handling in 6ES7318-3EL00-0AB0 uses internal work memory together with a required SIMATIC Micro Memory Card. The MMC supplies load-memory and backup functions, allowing retained data to survive without a backup battery.

The first serial interface on 6ES7318-3EL00-0AB0 can serve MPI or PROFIBUS DP, and the second forms a separate PROFIBUS DP master/slave path. Its RJ45 PROFINET interface adds IO-controller operation and open Ethernet communication without merging those networks into one port.

Commissioning of 6ES7318-3EL00-0AB0 requires the documented STEP 7 release and hardware support package. The CPU also separates diagnostic-buffer records, online status/control functions and configurable process-image behavior from the execution of the control program.
Alternative Names
Siemens CPU 319-3 PN/DP SIMATIC S7-300 CPU 319-3 6ES73183EL000AB0 6ES7 318-3EL00-0AB0 Siemens 6ES7318 3EL00 0AB0 S7-300 PN/DP Processor CPU319-3 PROFINET Controller SIMATIC 319-3 PN DP CPU
Technical notes
Siemens 6ES7318-3EL00-0AB0 requires a matching MMC; verify STEP 7 support, firmware and all three network assignments before download.
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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.
Is an MMC optional for Siemens 6ES7318-3EL00-0AB0?
No. Siemens 6ES7318-3EL00-0AB0 requires a SIMATIC Micro Memory Card for its load-memory and backup functions.
How are the two PROFIBUS paths on Siemens 6ES7318-3EL00-0AB0 different?
Siemens 6ES7318-3EL00-0AB0 has one MPI/DP interface and a second dedicated DP master/slave interface, so they can serve separate segments.
What must be matched before downloading a project to Siemens 6ES7318-3EL00-0AB0?
Before downloading to Siemens 6ES7318-3EL00-0AB0, match the STEP 7 version, hardware support package, firmware and configured interface parameters.
Can Siemens 6ES7318-3EL00-0AB0 act as a PROFINET IO controller?
Yes. Siemens 6ES7318-3EL00-0AB0 supports PROFINET IO-controller operation through its integrated Industrial Ethernet interface.
Where should commissioning faults be checked on Siemens 6ES7318-3EL00-0AB0?
For Siemens 6ES7318-3EL00-0AB0, review the diagnostic buffer, module diagnostics and the online status of the affected interface or program block.

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