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6DD1611-0AD0

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Siemens 6DD1611-0AD0 is the SIMADYN D MM11 coupling memory module with L-bus and C-bus connections and two 64 KB memory areas. It supports data transfer between CPU modules in a subrack.
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Technical specifications for 6DD1611-0AD0

  • Manufacturer:
    Siemens
  • Part Number:
    6DD1611-0AD0
  • Product Family:
    Siemens Simadyn
  • Product Type:
    SIMADYN D MM11 Coupling Memory Module
  • Stock:
    1
  • Product designation:
    MM11
  • Bus connection:
    L bus and C bus
  • Memory size:
    2 × 64 KB
  • Slots occupied:
    1
  • Data backup:
    Subrack backup battery
  • Bus termination:
    Integrated for L bus and C bus
  • Weight:
    0.491 kg
  • Estimated shipping dimensions:
    28.1x27.9x4.5cm
  • Tariff Code:
    85389091
  • 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 Bus Position Data Transfer Integration Notes Product Applications

Features:

  • Memory role: Transfers data between CPU modules through the MM11 coupling memory.
  • Bus structure: Connects to both the SIMADYN D L bus and C bus.
  • Capacity: Provides two 64 KB memory areas with integrated bus termination.
The module becomes relevant when multiple CPUs exchange data inside one SIMADYN D subrack.

Slot position and CPU order are practical selection details because MM11 sits between the first and second processor.

Backup-battery and bus-termination provisions belong to the rack-level maintenance record.

For the Siemens 6DD1611-0AD0 SIMADYN D MM11 Coupling Memory Module, Apter Power supports rack-evidence review, documentation, and quotation preparation.
Siemens 6DD1611-0AD0 SIMADYN D MM11 Coupling Memory Module 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.
  • CPU sequence: The coupling memory sits between the first and second CPU module.
  • L bus: Provides the documented local-bus connection for data exchange.
  • C bus: Provides the companion communication-bus connection and termination.
  • Expansion decision: Confirm that the planned CPU arrangement still requires the documented coupling-memory position.
  • Memory: Two 64 KB areas support inter-CPU data movement.
  • Shared access: Relevant where several CPUs use configured connections or a CS7 serial interface.
  • Retention: Rack battery backup helps preserve stored data during a power interruption.
  • Commissioning check: Verify inter-CPU exchange and retained data against the project record after installation.
  • Slot count: MM11 occupies one module position.
  • Bus termination: Integrated L-bus and C-bus termination reduces external termination needs.
  • Record set: CPU labels, rack type, and slot map support an accurate spare review.
  • Multi-CPU racks: Supports data exchange among processors in SIMADYN D subracks.
  • Configured coupling: Used with project connections that route data through coupling memory.
  • Legacy maintenance: Suitable for preserving documented MM11 positions in installed systems.
Description
Within a multi-CPU SIMADYN D rack, 6DD1611-0AD0 provides the MM11 coupling memory used to transfer data between processor modules. Siemens documents L-bus and C-bus connections with two 64 KB memory areas for this exact order number.

The placement of 6DD1611-0AD0 matters: the manual positions a coupling memory module between the first and second CPU when processors exchange data inside the subrack. Integrated termination for both buses and battery-backed data retention support the established rack design.

For a legacy spare request, Apter Power can compare 6DD1611-0AD0 against the installed CPU order, bus arrangement, slot position, and battery provisions. Siemens lists the article at the end of its product lifecycle, so documentation and full nameplate evidence should accompany the quotation.
Alternative Names
6DD16110AD0 6DD 1611-0AD0 6DD1611 0AD0 6DD1611-OADO 6DD1611OADO SIEMENS 6DD1611-0AD0 MM11 6DD1611-0AD0 6DDI611-0AD0
Technical notes
Match 6DD1611-0AD0 to the installed SIMADYN D CPU sequence, L-bus and C-bus layout, slot position, and backup-battery arrangement. Siemens places MM11 between the first and second CPU when inter-CPU data transfer is required. Reviewing these rack details helps Apter Power prepare documentation and quotations without confusing another memory module with the installed coupling function.
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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.
A second CPU was added but data is not exchanged through 6DD1611-0AD0. Which rack detail should be checked first?
Confirm that MM11 remains between the first and second CPU and that the documented L-bus and C-bus paths are complete. Wrong placement can defeat the intended exchange path.
Data associated with 6DD1611-0AD0 is lost after a power interruption. Should the memory module be replaced immediately?
Check the subrack backup battery and its maintenance record first. Siemens relies on the rack battery to retain MM11 data, so a weak backup can resemble a module fault.
A spare is labelled MM11 but carries a different article number from 6DD1611-0AD0. Can it be installed?
Use the full article number, memory configuration, bus connections, and host documentation before deciding. The product designation alone does not prove the same installed version.
Bus communication becomes unstable after fitting 6DD1611-0AD0. What should commissioning verify?
Verify the CPU order, slot position, L-bus and C-bus seating, integrated termination path, and configuration record before treating the replacement as defective.
A rack contains only one CPU. Should 6DD1611-0AD0 be added as a precaution?
Not without a documented coupling requirement. Siemens specifies MM11 when processor modules need data exchange or a shared CS7 serial interface, so the rack design should lead the decision.
Which records make a 6DD1611-0AD0 quotation technically useful?
Provide the rack type, CPU sequence, slot position, bus layout, backup-battery arrangement, label photographs, quantity, destination, and requested documentation.

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