Features:
- A 128 MHz 64-bit floating-point processor executes fast graphically configured control functions.
- Backplane and LE-bus paths connect the S7 CPU, station signals, and as many as two expansion modules.
- Buffered memory, removable program storage, interrupt inputs, and diagnostic LEDs organize execution and service.
The S7 CPU gathers plant I/O, transfers selected values to the FM 458, and receives the calculated control results through the rack buses.
Working DRAM holds active code and data, while buffered SRAM and the removable memory module serve retention and startup roles.
Interrupt inputs supply fast field events, and the serial service path lets a configuring computer inspect the application module.
The Siemens 6DD1607-0AA0 SIMATIC S7-400 FM 458 Application Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6DD1607-0AA0 SIMATIC S7-400 FM 458 Application Module Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Fast Control Execution and Working Memory
- RISC core: The 128 MHz 64-bit floating-point processor executes graphically configured control functions.
- Cycle timing: The documented fastest cycle is 0.1 ms, with a typical control cycle of 0.5 ms.
- DRAM: Eight megabytes hold expanded program code, runtime data, communications, messages, and traces.
- Buffered SRAM: The 256 KB retained area stores configured process quantities and diagnostic records.
Paths Between S7 I/O and Expansion Modules
- Passive node: The S7 CPU reads station I/O and transfers the required signals to the FM 458.
- P bus: The SIMATIC peripheral bus carries the defined process-data exchange in the S7-400 rack.
- K bus: The communication bus provides the separate S7 backplane communication path.
- LE bus: The local expansion bus moves fast data between the FM 458 and up to two expansion modules.
Interrupt-Capable 24 V Signal Channels
- Channel group: Eight non-isolated inputs share the module electrical reference.
- Signal levels: Inputs distinguish the documented 0 and 1 voltage ranges around a nominal 24 V signal.
- Connection path: The SC64 cable brings the X2 sub-D channels to the selected interface module.
- Event response: Each channel can supply an interrupt input for configured fast event handling.
Program Loading and Front-Panel Status
- Program module: An MC521 or MC500 memory module carries the bootable application into the FM 458.
- PC service: The X1 RS232 interface connects a configuring or service computer through the SC57 cable.
- Status LEDs: RUN, STOP, interface, communication, and fault indicators separate operating conditions.
- Acknowledgment: The front button clears an acknowledged transient indication before the next active fault is shown.