Description
The 6DD1607-0AA2, designated as the Siemens FM 458-1 DP application module, is a high-performance 64-bit RISC-based coprocessor designed for the SIMATIC S7-400 automation system . Engineered specifically for demanding closed-loop control, motion control, and drive-related applications, this module offloads complex mathematical calculations from the main CPU to ensure deterministic, high-speed execution .
Built on a powerful 64-bit floating-point RISC processor architecture, the 6DD1607-0AA2 features substantial memory resources including 64 MB SDRAM and 16 MB DRAM, alongside a PROFIBUS-DP interface for seamless integration with drive systems . This module is configurable using CFC (Continuous Function Chart) and optional SFC (Sequential Function Chart), making it a versatile solution for industries requiring precision and reliability . Please note that this product is a direct, fully compatible replacement for the earlier 6DD1607-0AA0 version and is considered a legacy spare part .
Application Scenarios
In a hot-strip steel rolling mill, the existing S7-400 CPU was overwhelmed by the computational demands of synchronizing six stand drives, managing gauge control loops, and executing camming profiles at full rolling speed. By deploying the Siemens 6DD1607-0AA2 as a dedicated FM 458-1 DP application module, engineers offloaded all motion-critical calculations to the 64-bit RISC processor. The 6DD1607-0AA2 enabled closed-loop torque, speed, and position control for the multi-motor drives, ensuring high dynamic performance and preventing strip breakage during high-speed operation .
A critical pain point the 6DD1607-0AA2 addresses is CPU overload in high-speed continuous processes. Its dedicated coprocessor architecture ensures complex control math executes in deterministic time slices as short as 0.1 ms, independent of the main PLC scan . This eliminates jitter and guarantees loop stability, which is especially valuable in applications like winders, reeling machines, cross-cutters, and hydraulic drives with high dynamic requirements . The 6DD1607-0AA2 directly enables the continuation of operations for these legacy systems, which are often too costly to completely replace.
Parameters
| Main Parameters | Value/Description |
|---|---|
| Product Model | 6DD1607-0AA2 (FM 458-1 DP) |
| Manufacturer | Siemens (SIMATIC S7-400) |
| Product Category | Application Module / Motion Control Coprocessor – FM 458 series |
| Processor | 64-bit floating-point RISC CPU – Optimized for real-time control |
| DRAM | 16 MB – For user programs and data |
| SDRAM | 64 MB – High-speed data buffers |
| Program Memory | MMC (Micro Memory Card) up to 8 MB – Non-volatile program storage |
| Digital Inputs | 8 x 24V DC (via connector X2) – For external synchronization and status signals |
| Interfaces | 1× PROFIBUS DP (X3, up to 12 Mbit/s), 1× RS232 (X1, service interface) |
| Supply Voltage | 5 V DC and 24 V DC (via backplane) |
| Current Consumption | Typ. 1.5 A, max. 3 A at 24V; 2.2 A at 5V |
| Power Loss | Typ. 7.5 W – Efficient operation |
| Operating Temp. | Max. 40°C without forced ventilation |
| Weight | Approx. 1.0 kg |
