Siemens 6ES7414-3EM07-0AB0 SIMATIC S7-400 CPU 414-3 PN/DP
01Product Profile
Siemens 6ES7414-3EM07-0AB0 is the standard SIMATIC S7-400 CPU 414-3 PN/DP with 4 MB of work memory divided equally between code and data. It combines an MPI/PROFIBUS DP interface, an integrated Ethernet/PROFINET interface and a slot for an IF 964-DP interface module. The CPU supports coordinated central and distributed automation tasks and must be engineered with the correct firmware V7.0 hardware catalog, network configuration and memory-card arrangement.
02Technical Data
| Manufacturer | Siemens |
|---|---|
| Article Number | 6ES7414-3EM07-0AB0 |
| Product Designation | CPU 414-3 PN/DP |
| CPU Class | Standard S7-400 CPU |
| Hardware Functional Status | 01 |
| Firmware Version | V7.0 |
| Work Memory | 4 MB total |
| Program / Data Memory | 2 MB / 2 MB |
| Interface X1 | MPI / PROFIBUS DP, up to 12 Mbit/s |
| Interface X5 | Ethernet / PROFINET |
| Additional Interface | Pluggable IF 964-DP position |
| Engineering Support | STEP 7 V5.5 with HSP 262 |
| Isochronous Operation | Via PROFIBUS DP or PROFINET |
| Memory Card Capacity | Flash or RAM card up to 64 MB |
| Typical Power Loss | 6.5 W |
03System Role
Controller Function
- Serves as the central standard CPU in a SIMATIC S7-400 automation station.
- Coordinates central modules and distributed I/O over PROFINET and/or PROFIBUS DP.
- Provides controller communication, diagnostics, time functions and program execution for the engineered plant or machine.
- Can support synchronized process acquisition when the complete network and I/O architecture is configured for isochronous operation.
- Uses the installed S7 memory card and STEP 7 project as controlled parts of the CPU configuration.
Key Capabilities
- Four megabytes of work memory provide equal two-megabyte areas for code and data.
- Integrated Ethernet/PROFINET communication supports controller and distributed-I/O integration.
- The X1 interface can be configured for MPI or PROFIBUS DP communication.
- A pluggable IF 964-DP position provides the documented additional PROFIBUS interface option.
- Isochronous operation is supported over PROFIBUS DP or PROFINET in a correctly engineered system.
- Programming support includes LAD, FBD, STL, SCL, CFC, GRAPH and HiGraph within the supported engineering environment.
04Compatibility
- Use the exact STEP 7 V5.5 hardware support package level required for this V7.0 CPU.
- Match the S7 memory-card type and capacity to the project and the documented maximum of 64 MB.
- Verify X1 operating mode, MPI or PROFIBUS address, transmission rate, network termination and all configured slaves.
- Confirm PROFINET device names, IP settings, IO-controller configuration, update times and topology.
- If IF 964-DP is installed, verify the exact interface module, project assignment and connected PROFIBUS network.
- Do not copy safety settings from the visually similar 6ES7414-3FM07-0AB0; this 3EM article is the standard, non-F CPU.
05Applications
- Standard S7-400 controllers combining PROFINET and PROFIBUS DP networks.
- Manufacturing lines and process units requiring 4 MB of CPU work memory.
- Central stations with distributed I/O and coordinated isochronous acquisition.
- Service replacement where firmware V7.0, HSP support and network configuration can be preserved.
- Applications using a third communications path through a supported IF 964-DP module.
- Modernization projects that need exact documentation of the installed standard CPU before migration.
06FAQ
What is Siemens 6ES7414-3EM07-0AB0?
It is the standard SIMATIC S7-400 CPU 414-3 PN/DP with integrated PROFINET and MPI/PROFIBUS DP communication.
How much work memory is available?
The CPU has 4 MB in total, divided into 2 MB for code and 2 MB for data.
Which interfaces are provided?
It includes an MPI/PROFIBUS DP interface, an Ethernet/PROFINET interface and a position for an IF 964-DP interface module.
Does the CPU support isochronous operation?
Yes. Siemens specifies isochronous operation through PROFIBUS DP or PROFINET when the complete system is configured accordingly.
Is this the fail-safe CPU variant?
No. The 3EM article is the standard CPU; the visually similar 3FM article is the fail-safe variant and must not be confused with it.
What must be checked after replacement?
Verify firmware and HSP support, memory-card loading, all MPI, PROFIBUS and PROFINET settings, distributed I/O, diagnostics and the complete application sequence.
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