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Product Overview
This central processing unit delivers high-performance control for the SIMATIC S7-400 system. It features a powerful processor with 2 MB of working memory for demanding applications. The CPU executes 1,000 binary instructions in roughly 0.08 ms for fast response. It measures 50 mm in width, 290 mm in height, and 210 mm in depth. The unit weighs approximately 1,200 grams for secure rack mounting. You can operate this controller in ambient temperatures from 0 °C to 60 °C.
The processor includes an integrated PROFIBUS DP interface for master communication. It also provides an MPI/DP interface for programming and diagnostics tasks. The CPU supports up to 1,024 I/O modules for extensive system expansion. You can expand the memory using a built-in flash card slot. The device offers comprehensive diagnostic functions for rapid fault identification.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Central Processing Unit |
| Model | 6ES7486-3AA00-0AB0 |
| Working Memory | 2 MB |
| Execution Speed | 0.08 ms / 1,000 binary instructions |
| PROFIBUS DP Interface | Yes (master) |
| MPI/DP Interface | Yes (programming/diagnostics) |
| Max I/O Modules | 1,024 |
| Memory Card Slot | Yes (flash card) |
| Supply Voltage | 5 V DC (backplane) |
| Power Loss | Typ. 6.0 W |
| Dimensions (W x H x D) | 50 mm x 290 mm x 210 mm |
| Weight | Approx. 1,200 g |
| Mounting | S7-400 rack |
| Operating Temperature | 0 °C to 60 °C |
| Programming Software | STEP 7 V5.5, TIA Portal |
Key Features and Benefits
This CPU handles large-scale control applications with substantial memory capacity. Its integrated PROFIBUS DP interface simplifies distributed I/O connectivity. The fast execution speed supports time-critical process control tasks. You can expand memory flexibly using the flash card slot. The CPU also supports redundant system configurations for high availability.
Installation and Configuration
You insert the CPU into any free slot of the S7-400 rack backplane. Tighten the retaining screws to secure the module firmly in position. Connect the programming device via the MPI/DP interface for configuration. Assign the station address using the DIP switches on the module’s side. Download the user program and hardware configuration through STEP 7. The CPU will execute the program after completing its startup routine.
Typical Applications
Power plants use this CPU for turbine control and grid synchronization tasks. Steel mills rely on it for complex process automation and sequencing. The module also serves in large-scale chemical and pharmaceutical facilities.