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6DD1611-0AD0 Siemens
Product Details
Specifications provided for reference. Verify critical details against official manufacturer documentation before installation.
Product Overview
The 6DD1611-0AD0 is a Siemens SIMADYN D coupling memory module ("MM11"). It provides buffered data memory (2 × 64 Kbytes RAM) for communication between multiple CPU modules in the same subrack via L-Bus and C-Bus. This module must be inserted between the first and second CPU in applications where CPUs exchange data-such as via project-configured connections or shared serial interfaces in CS7 environments. Data retention during power loss is managed on the subrack level, not the module.
Best Suited For
- Multiple-CPU SIMADYN D installations requiring inter-CPU data exchange
- Coupling CPUs via configured "$ connections" or coupling memory functionality
- Subrack architectures with shared CS7 serial interfaces
- SIMADYN D systems where reliable inter-module communication is necessary