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Technical specifications for 6DD1611-0AD0
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Manufacturer:Siemens
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Product Category:DCS Systems
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Spare Part Number:6DD1611-0AD0
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Estimated shipping dimensions:2x25.8x27.2cm
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Weight:0.4 kg
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Tariff Code:8537101190
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Counliy of origin:Germany
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Designation:MM11
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Module type:Coupling memory module
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Memory size:2 x 64 KB
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Bus connections:L bus and C bus
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Required context:More than one CPU in a subrack requiring data exchange
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Slot rule:Any slot between the first and second CPU module
Information
Overview
Manuals
Common Applications
Product Precautions
In a multi-CPU SIMADYN D rack, Siemens 6DD1611-0AD0 sits between the first and second CPU modules so configured data exchange can traverse the coupling memory.
- MM11 coupling memory
- Two 64 KB memory areas
- L-bus and C-bus connection
- Multi-CPU subrack use
The controlled engineering path is First CPU module → MM11 shared RAM → Second CPU module → Additional CPU or CS7 access; preserve the approved system record and verify the intended final response before release.
Important Notice: Confirm the MM11 slot between the first and second CPUs and preserve all configured coupling-memory connections.
Siemens 6DD1611-0AD0 Manuals & Downloads
Siemens 6DD1611-0AD0 Official Technical Reference Excerpt (PDF)Siemens 6DD1611-0AD0 Installation & Commissioning Guide (PDF)
Important Notice: The official Siemens hardware manual documents the exact MM11 coupling-memory module; the ApterPower guide provides a separate exact-model field sequence for preparation, connection checks, functional proving and acceptance.
Multi-CPU data exchange
Share process data between CPU modules in one subrack.
Configured connections
Support project-defined coupling-memory communication.
CS7 resource sharing
Coordinate access where multiple CPUs use a CS7 serial interface.
Legacy rack maintenance
Retain the documented MM11 position during module replacement.
Apply these exact-model controls to Siemens 6DD1611-0AD0 before isolation, replacement, reconnection, energization and final release.
1
Shut down and isolate the subrack before removing the module.
2
Confirm the complete 6DD1611-0AD0 identity and MM11 designation.
3
Preserve the installed slot between the first and second CPU modules.
4
Use ESD-safe handling for the memory and backplane contacts.
5
Back up the project containing coupling-memory and $ connections.
6
Inspect L-bus and C-bus backplane contacts before installation.
7
Verify multi-CPU data exchange after the controlled restart.
8
Archive the final slot map, project version and functional-test record.
Technical notes
Keep the MM11 between the first and second CPU modules and preserve the project-defined coupling-memory connections. Test each configured inter-CPU exchange path after restart.
FAQ View All FAQ
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Which multi-CPU data-exchange role is performed by Siemens 6DD1611-0AD0?It is the SIMADYN D MM11 coupling memory module.
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How much coupling memory is provided by Siemens 6DD1611-0AD0?It provides two 64 KB memory areas.
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Which backplane buses connect to Siemens 6DD1611-0AD0?The MM11 connects to the L bus and C bus.
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When does a SIMADYN D subrack require Siemens 6DD1611-0AD0?It is used when more than one CPU in a subrack must exchange data.
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Where must Siemens 6DD1611-0AD0 be positioned relative to the first and second CPUs?Siemens specifies a slot between the first and second CPU modules.
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Which configured exchanges can use Siemens 6DD1611-0AD0?Examples include configured $ connections, coupling-memory coupling and shared CS7 serial-interface access.
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Which inter-CPU tests accept a replacement Siemens 6DD1611-0AD0?Verify every configured inter-CPU data path and any shared CS7 access before release.
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