Siemens 6ES7414-2XG04-0AB0 SIMATIC S7-400 CPU 414-2 DP
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Product Information
The Siemens 6ES7414-2XG04-0AB0 is a SIMATIC S7-400 CPU 414-2 DP central processing unit engineered for mid-to-high-tier process automation and industrial control systems. Operating within the SIMATIC S7-400 hardware platform, this PLC CPU module delivers rapid execution speeds down to 0.04 µs for bit and fixed-point word operations and 0.12 µs for floating-point calculations. Built with 1.4 MB of total integrated work memory split evenly into 700 KB dedicated to program execution and 700 KB for process data storage, the controller manages extensive control logic across an 8 KB digital input and output process image address space. The unit mounts directly into standard SIMATIC S7-400 racks and functions in conjunction with matching system power supply modules.
For network integration and field device management, the 6ES7414-2XG04-0AB0 features dual onboard RS-485 9-pin D-sub interfaces operating at transmission rates up to 12 Mbit/s. Interface 1 functions as a multi-point MPI and PROFIBUS DP master/slave connection supporting up to 32 MPI nodes, while Interface 2 serves as a dedicated PROFIBUS DP master/slave interface for distributed peripheral communication. Commissioning a replacement module requires transferring the hardware project and application code built using STEP 7 software version V5.2 or higher. Because internal work memory relies on battery retention, transferring logic via SIMATIC S7 RAM or Flash memory cards up to 64 MB ensures seamless startup, a process where technical assistance from ABC Industrial Parts can help verify configuration parameter alignment.
Real-time system monitoring is maintained through front-panel diagnostic indicators that signal internal CPU conditions, external rack faults, forced I/O variables, restart status, and network interruptions across both communication ports. Detailed diagnostic reporting is accessible by evaluating diagnostic buffer entries in SIMATIC Manager HW Config or processing system organization blocks OB80 through OB87, OB121, and OB122. When hardware degradation or internal electronic failures prevent normal operation, component-level board repairs are not performed on site. Acquiring a tested replacement processor or utilizing repair services from ABC Industrial Parts provides a rapid resolution to restore facility uptime.
Technical Specifications
| Manufacturer | Siemens |
| Part Number | 6ES7414-2XG04-0AB0 |
| Model / Type | CPU 414-2 DP |
| Product Family | SIMATIC S7-400 |
| Component Type | PLC CPU Module |
| Total Work Memory | 1.4 MB |
| Code Work Memory | 700 KB |
| Data Work Memory | 700 KB |
| Bit Operation Execution Time | 0.04 µs |
| Word Operation Execution Time | 0.04 µs |
| Floating Point Execution Time | 0.12 µs |
| Digital I/O Address Space | 8 KB |
| Interface 1 (MPI/PROFIBUS DP) | RS-485, 12 Mbit/s, 9-pin D-sub |
| Interface 2 (PROFIBUS DP) | RS-485, 12 Mbit/s, 9-pin D-sub |
| Lifecycle Status | Discontinued |
Programming and Configuration
Engineering and application programming for the Siemens 6ES7414-2XG04-0AB0 CPU 414-2 DP require SIMATIC STEP 7 software version V5.2 or higher. The central processing unit operates with 1.4 MB of integrated work memory, partitioned evenly into 700 KB for user application code and 700 KB for process data parameters. System retention is supported by battery-backed RAM memory, preserving operational data during power interruptions.
External program storage and load memory expansion are accommodated using optional SIMATIC S7 RAM or Flash memory cards with capacities up to 64 MB. When loading applications into a new or replacement module, memory card usage enables program transfer and storage without losing system parameters. System organization blocks OB80 through OB87, OB121, and OB122 can be integrated into the program structure to evaluate hardware alarms and control processing responses.
Communication and System Integration
The SIMATIC S7-400 CPU 414-2 DP contains two built-in RS-485 interfaces utilizing standard 9-pin D-sub connectors. Interface 1 functions as a combined MPI and PROFIBUS DP interface supporting network transfer speeds up to 12 Mbit/s across up to 32 MPI communication nodes. This multi-point port permits concurrent connection to engineering workstations, operator HMIs, and peer controllers.
Interface 2 acts as a dedicated PROFIBUS DP master/slave interface operating at speeds up to 12 Mbit/s for communication with distributed peripheral I/O racks. Dual integrated communication ports eliminate the requirement for additional communication processor modules when managing distributed field networks alongside host system visualization.
Diagnostics and Status Indication
The front panel of the 6ES7414-2XG04-0AB0 features eight LED status indicators that provide instant visual feedback on CPU operation and field network activity. These status LEDs distinguish between internal CPU software faults, external rack or power supply conditions, active variable forcing, cold restart conditions, operating modes, and bus communication state errors on both physical ports.
Advanced diagnostic analysis is conducted using STEP 7 software by reading internal CPU diagnostic buffer entries and launching SIMATIC Manager HW Config Online Diagnostics. Software-driven monitoring works alongside system organization blocks OB80 through OB87, OB121, and OB122 to pinpoint bus execution failures, execution timeouts, or I/O access errors.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| INTF | Red - Solid | Internal fault detected in CPU or system software |
| EXTF | Red - Solid | External fault detected (rack, module, or power supply fault) |
| BUS1F | Red - Flashing/Solid | Bus fault on Interface 1 (MPI/DP) - transmission error or node failure |
| BUS2F | Red - Flashing/Solid | Bus fault on Interface 2 (DP) - transmission error or node failure |
| FRCE | Yellow - Solid | Force active (at least one input or output is forced) |
| CRST | Yellow - Solid | Cold restart active or requested |
| RUN | Green - Solid | CPU in RUN operating mode |
| STOP | Yellow - Solid | CPU in STOP operating mode |
Replacement and Spare Part Considerations
The Siemens 6ES7414-2XG04-0AB0 CPU module reached official discontinued lifecycle status in October 2015. Maintainers servicing existing SIMATIC S7-400 infrastructure must ensure that replacement hardware matches the system rack and power supply configuration of the installed base.
When installing a replacement unit, transfer the existing SIMATIC S7 RAM or Flash memory card (up to 64 MB) to retain system programs and hardware settings. Verify that the engineering workstation utilizes STEP 7 software version V5.2 or higher. If migrating to the designated successor model 6ES7414-2XK05-0AB0, update the hardware configuration within the STEP 7 project prior to downloading.
Frequently Asked Questions
What software version is required to configure the Siemens 6ES7414-2XG04-0AB0?
Programming and hardware configuration require SIMATIC STEP 7 software version V5.2 or higher.
What is the memory capacity of the CPU 414-2 DP, and how can it be expanded?
The CPU contains 1.4 MB of integrated work memory, split into 700 KB for program execution and 700 KB for process data. Memory can be expanded up to 64 MB using optional SIMATIC S7 RAM or Flash memory cards.
What communication interfaces are integrated into this processor?
The module includes two RS-485 9-pin D-sub ports operating up to 12 Mbit/s. Interface 1 provides combined MPI and PROFIBUS DP capabilities for up to 32 nodes, while Interface 2 provides dedicated PROFIBUS DP master/slave communication.
What do the BUS1F and BUS2F LED indicators signify?
A solid or flashing red light on BUS1F or BUS2F indicates a bus fault on Interface 1 or Interface 2 respectively, caused by transmission errors or node communication failures.
What is the designated successor model for the 6ES7414-2XG04-0AB0?
The official successor model for this CPU module is the Siemens 6ES7414-2XK05-0AB0 processor.
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