Siemens 6DD1607-0AA2 FM458-1 DP Application Module
01Product Overview
Siemens 6DD1607-0AA2 is the FM458-1 DP application module for SIMATIC S7-400. It is a high-performance, freely configurable module for control and technology tasks, with one PROFIBUS DP connection, local digital inputs, SRAM-backed data, a hardware real-time clock, and 60 MB of user program memory.
02Functions
Core Functions
- Executes high-performance, freely configurable open-loop and closed-loop control tasks inside an S7-400 station.
- Provides 60 MB of user program memory for the configured application.
- Communicates through one PROFIBUS DP connection with documented support for equidistance and direct data exchange.
- Provides eight fast 24 V digital inputs at connector X2 with a maximum specified input delay of 5 microseconds.
- Uses SRAM backup and a hardware real-time clock for retained application data and time-dependent functions.
- Supports OEM know-how protection for the configured application.
Product Identity
- Manufacturer: Siemens
- Model: 6DD1607-0AA2
- Product Type: SIMATIC S7-400 FM458-1 DP Application Module
- Lifecycle: Product Cancellation
03Specifications
| Manufacturer | Siemens |
|---|---|
| Article Number | 6DD1607-0AA2 |
| Product Name | FM458-1 DP Application Module |
| System | SIMATIC S7-400 |
| User Program Memory | 60 MB |
| PROFIBUS DP Connections | 1 |
| Digital Inputs at X2 | 8 |
| Digital Input Voltage | 24 V DC |
| Signal 1 Range | 13.5 to 33 V DC |
| Typical Input Current | 3 mA |
| Maximum Input Delay | 5 microseconds |
| Backplane Supply | 5 V DC, 4.8 to 5.25 V |
| Typical Current Consumption | 1.5 A |
| Maximum Current Consumption | 3 A |
| SRAM Backup Current | Maximum 15 microamps from battery |
| Slots Required | 1 |
| Hardware Real-Time Clock Resolution | 500 ms |
| PROFIBUS Functions | Equidistance and direct data exchange supported |
| OEM Know-How Protection | Supported |
| Lifecycle Status | Product Cancellation |
04Compatibility
- Install only in a compatible SIMATIC S7-400 rack and power configuration that can supply the documented 5 V current.
- Match the STEP 7 and CFC engineering environment, FM458 application, libraries, firmware, hardware configuration, and any expansion modules.
- Preserve PROFIBUS address, bus timing, equidistance, direct data exchange, telegrams, diagnostics, and connected devices.
- Confirm X2 digital-input wiring, voltage, signal logic, shield and ground design, and machine timing requirements.
- Record SRAM retention and battery strategy, real-time clock use, OEM protection, passwords, and protected application access.
- A general S7-400 CPU or a newer controller is not a drop-in functional replacement for a configured FM458-1 DP application.
05Applications
Typical Uses
- High-speed control and technology functions integrated into SIMATIC S7-400 systems.
- Drive-related, process, test-stand, machinery, and coordinated control tasks implemented in the FM458 application.
- Deterministic PROFIBUS DP systems using equidistant bus operation or direct data exchange.
- Applications requiring fast local digital inputs and retained control data.
- Legacy spare-part replacement and controlled migration of an installed FM458-1 DP solution.
Selection Boundary
- Use application examples only as engineering context; they do not prove compatibility with an installed machine.
- Confirm electrical, mechanical, network, software, safety, environmental, and lifecycle requirements against the complete project.
- Preserve configuration records and perform controlled commissioning whenever hardware is exchanged.
06Lifecycle
- The official lifecycle is Product Cancellation, so backup, repair, and migration planning are required.
- Save the complete STEP 7/CFC project, libraries, compiled application, passwords, OEM protection records, hardware configuration, PROFIBUS data, and commissioning files.
- Record rack and slot, power loading, expansion modules, X2 wiring, digital-input behavior, SRAM retention, clock use, and every connected field device.
- After replacement, verify rack startup, application loading, PROFIBUS timing, direct data exchange, digital inputs, clock, retained values, diagnostics, alarms, and control response.
- Perform controlled functional and timing tests for every affected loop and technology function.
- A migration must reproduce the FM458 algorithms, timing, communication, I/O behavior, retention, and protection requirements in the target platform.
FAQFrequently Asked Questions
What is 6DD1607-0AA2?
6DD1607-0AA2 is a cancelled high-performance FM458-1 DP application module for freely configured control tasks in SIMATIC S7-400.
Where is this product normally used?
It is used for demanding control, technology, and PROFIBUS DP applications requiring deterministic execution and fast local inputs.
What must be checked before ordering?
Confirm the complete article number, installed hardware revision, lifecycle state, supply and I/O design, communication interfaces, connector assignment, software release, approvals, and project configuration.
What information should be saved before replacement?
Save the complete STEP 7/CFC project, libraries, compiled application, passwords, protection records, rack layout, PROFIBUS configuration, X2 wiring, timing, retention, and commissioning data.
Can a similar Siemens article be used as a direct replacement?
No. A different S7-400 or newer controller will not automatically reproduce the FM458 algorithms, timing, PROFIBUS behavior, memory, and I/O.
What should be verified after installation?
Verify rack and application startup, PROFIBUS timing and direct exchange, all digital inputs, clock, retained data, diagnostics, alarms, interlocks, and every control function.
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