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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 6ES7412-1XF04-0AB0 |
| Alternative Part Number | 6ES74121XF040AB0 |
| Manufacturer | Siemens |
| Category | General Automation |
| Description | Central Processing Unit for SIMATIC S7-400 PLC systems, providing the processing power for automation tasks. |
| Memory | 144 kB (72 kB for code, 72 kB for data) |
| Voltage | 24 V dc |
| Weight | 0.680 kg |
| Commodity Code | 853710 |
| Working Memory | Integrated 72 Kbytes for code and data |
| Load Memory | Integrated 256 Kbytes RAM, expandable with memory card up to 64 Mbytes |
| Backup | Yes, all data with battery |
| Processing Times for Bit Operations | 0.1 μs |
| Processing Times for Word Instructions | 0.1 μs |
| Processing Times for Integer Math Instructions | 0.1 μs |
| Processing Times for Floating-point Math Instructions | 0.3 μs |
| Timers/Counters | 2048 S7 timers/counters, retentivity configurable |
| Data Areas | Total retentive data areas including memory bits, times, counts |
| Memory Markers | 4 Kbytes, retentivity configurable |
| Data Blocks | Max. 511, size max. 64 Kbytes |
| Local Data | Max. 8 Kbytes, preset 4 Kbytes |
| Address Areas (Inputs/Outputs) | 4 Kbytes/4 Kbytes, expandable |
| Digital Channels | Max. 32768/Max. 32768 |
| Analog Channels | Max. 2048/Max. 2048 |
| Communication Functions | Supports programming device/OP communication, global data communication, S7 basic and communication |
| Interfaces | Integrated RS 485/Profibus, isolated |
| Power Supply to Interface | Max. 150 mA (15 VDC to 30 VDC) |
| Number of Connection Resources | MPI: 16, DP: 16 |
| Transmission Rates | Up to 12 Mbps |
| Number of DP Slaves | Max. 32 |
| User Data per DP Slave | Max. 244 bytes inputs, max. 244 bytes outputs |
The Siemens 6ES7412-1XF04-0AB0 is a high-performance central processing unit designed for the SIMATIC S7-400 series, offering robust capabilities for a variety of industrial automation applications. This CPU is engineered to handle complex tasks with ease, featuring an integrated working memory of 144 kB, which is split evenly between code and data, ensuring efficient processing and multitasking.
With its compact design, the unit is optimised for space-saving installation within control cabinets, making it an ideal choice for facilities with limited space. The CPU supports a load memory of 256 Kbytes RAM, which can be expanded with a memory card up to 64 Mbytes, providing flexibility for application growth and future expansions.
The unit boasts impressive processing times for bit operations, word instructions, and both integer and floating-point math instructions, ensuring swift and accurate execution of control tasks. It is equipped with a comprehensive set of timers and counters, all of which are retentive and backed up by battery, safeguarding against data loss in the event of power interruptions.
Designed with versatility in mind, the Siemens 6ES7412-1XF04-0AB0 features multiple interfaces, including MPI/DP interface for seamless communication with programming devices, control and monitoring devices, and other PLCs. The CPU's robust communication functions support a wide range of operations, from global data communication to S7 basic and advanced communication, facilitating integration into diverse industrial environments.
This CPU is not only powerful but also user-friendly, with clear LED displays for easy monitoring of operational states and diagnostics. Its mode selector switch allows for straightforward mode changes, enhancing the user experience during setup and maintenance.
Overall, the Siemens 6ES7412-1XF04-0AB0 central processing unit is a reliable and efficient choice for industrial automation systems, delivering the performance and flexibility required to meet the demands of modern manufacturing and processing industries.
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Frequently Asked Questions
What is the purpose of the Central Processing Unit for SIMATIC S7-400?
The Central Processing Unit is designed to be the main processing unit for SIMATIC S7-400 PLC systems, handling all the computational tasks, logic operations, and control functions necessary for automation processes.
Can the memory of the CPU be expanded?
Yes, the CPU comes with integrated memory, but it can be expanded using memory cards such as RAM or FEPROM cards up to 64 Mbytes to accommodate larger programmes or additional data storage needs.
What type of power supply is required for this CPU?
The CPU requires a 24 V dc power supply to operate effectively.
Is it possible to programme the CPU while it is in operation?
Yes, the CPU supports online editing, which allows for modifications to the programme while the CPU is running, although certain conditions and hardware requirements must be met for this functionality.
What are the communication capabilities of this CPU?
The CPU is equipped with an MPI/DP interface that supports communication with programming devices, human-machine interfaces, and other PLCs. It can also be configured as a PROFIBUS DP master or slave for communication with distributed I/O and other DP master stations.
How can the user programme be backed up?
The user programme can be backed up permanently on a Flash memory card without the need for a backup battery, or it can be stored in RAM with a battery or external power supply connected to the 'EXT. BATT.' socket to retain data after power is switched off.
What is the role of the mode selector switch on the CPU?
The mode selector switch is used to set the operating mode of the CPU, such as RUN or STOP, and to initiate specific functions like memory card operations or system tests.
How can I monitor the status of the CPU?
The CPU is equipped with a series of LED indicators that provide information on the operational status, including power, run mode, stop mode, and various fault conditions.
What is the significance of the integrated work memory?
The integrated work memory is essential for storing the user programme's code and data. It ensures that the CPU can execute the automation tasks efficiently and reliably.
Can the CPU be used for time-critical applications?
Yes, the CPU is designed to handle time-critical applications with features like a precise internal clock, fast processing times for bit, word, and floating-point operations, and the ability to synchronise with other devices.
