SIEMENS SIMADYN D
6DD1611-0AF0 MM3 Mailbox Module
MM3 coupling-memory module for data exchange across SIMADYN D L-bus and C-bus
EXACT ORDER CODE
6DD1611-0AF0
End Prod.Lifecycl.
Siemens 6DD1611-0AF0 is the SIMADYN D MM3 mailbox module. Siemens documents a dual 64 KB RAM coupling memory connected to the L-bus and C-bus so CPU modules in one rack can exchange data.
The MM3 also provides a system-error relay and radio-clock function. In a multi-CPU rack it is positioned between the first and second CPU modules, so the exact slot sequence, bus architecture and installed SIMADYN D configuration must be recorded before replacement.
| Catalog item |
Verified Siemens information |
| Manufacturer |
Siemens |
| Complete part number |
6DD1611-0AF0 |
| Product family |
SIMADYN D |
| Official product lifecycle |
End Prod.Lifecycl. |
| Configuration identity |
MM3 mailbox; L-bus/C-bus; 2 × 64 KB RAM |
03
Verified Technical Data
| Parameter |
Official value |
| Product designation |
SIMADYN D MM3 mailbox module |
| Order number |
6DD1611-0AF0 |
| Bus connections |
L-bus and C-bus |
| Coupling memory |
2 × 64 KB RAM |
| Primary function |
Data exchange between CPU modules |
| Additional function |
System-error relay |
| Clock function |
Radio clock |
| Rack placement |
Between the first and second CPU modules |
| Packaging dimensions |
27.6 × 27.3 × 4.7 cm (L × W × H) |
| Net weight |
0.596 kg |
04
System Fit and Applications
Multi-CPU data exchange
Provide shared coupling memory where SIMADYN D CPU modules exchange configured process data.
System coordination
Support documented CPU-to-CPU coupling functions through the L-bus and C-bus.
Legacy rack maintenance
Retain the exact MM3 order number, bus arrangement and slot location when servicing an installed system.
05
Compatibility and Procurement Checks
| Check |
Procurement requirement |
| 1. Complete article code |
Confirm 6DD1611-0AF0; MM11 and MM4 are different mailbox modules. |
| 2. Bus architecture |
Verify that the installed rack uses the required SIMADYN D L-bus and C-bus arrangement. |
| 3. CPU sequence |
Record the first and second CPU positions and the MM3 slot between them. |
| 4. Memory function |
Confirm that the project expects 2 × 64 KB coupling memory. |
| 5. System functions |
Check use of the system-error relay and radio-clock function. |
| 6. Legacy configuration |
Capture rack, CPU, software and wiring records before removing the installed module. |
End Prod.Lifecycl.
Siemens SiePortal lists the exact 6DD1611-0AF0 article as End Prod.Lifecycl. and shows no replacement product. Procurement should therefore retain the exact module, bus and rack-configuration identity.
07
Frequently Asked Questions
What is Siemens 6DD1611-0AF0?
It is a SIMADYN D MM3 mailbox module used for data exchange between CPU modules.
How much coupling memory does it provide?
Siemens documents 2 × 64 KB RAM, with memory associated with the L-bus and C-bus.
Where is the module installed?
The SIMADYN D manual places a coupling-memory module between the first and second CPU modules.
Does Siemens list a successor?
The current Siemens product page shows the article at End Prod.Lifecycl. without a replacement product.
What should be supplied for a quotation?
Provide the exact code, rack and CPU list, slot plan, quantity, destination and available configuration records.
Request a verified offer for 6DD1611-0AF0
Send the complete order code, quantity, destination and installed-system details for stock, compatibility, warranty and global-delivery review.
Email InquiryWhatsApp +86 181 5988 9985
