Siemens 6ES7314-1AE04-0AB0

Siemens 6ES7314-1AE04-0AB0

The Siemens 6ES7314-1AE04-0AB0 is a part of the SIMATIC S7-300 series, specifically a CPU 314 CPU with an integrated 24 V DC power supply and 24 Kbyte working memory. As a central processing unit, it plays a vital role in controlling and monitoring industrial automation processes.

Power Supply and Voltage

The CPU operates with a rated supply voltage of 24 V DC, with a permissible range from 20.4 V to 28.8 V. It consumes a rated current of 1000 mA, and the typical inrush current is 8 A. The maximum power loss is 8 W, making it an efficient choice for industrial applications.

Memory

The integrated work memory is 24 Kbyte, with 24 KB/8 K instructions RAM (integrated). The load memory is expandable through Flash-EPROM (FEPROM) technology, with a maximum capacity of 4 Mbyte. The CPU also features integrated RAM with a maximum capacity of 40 Kbyte. Backup is available with or without a battery, supporting all blocks or specific memory areas (4 KB: bit memory, counter, times, and data).

Processing Times

The CPU's processing times vary for different operations:

• Bit operations: Typical 0.3 µs, Maximum 0.6 µs
• Word operations: Typical 1 µs
• Fixed point arithmetic: Typical 2 µs
• Floating point arithmetic: Typical 50 µs
• Timer/counter operations: Typical 12 µs

CPU Blocks and Nesting Depth

The CPU supports a variety of blocks:

• DB (Data Blocks): Max. 127 with a size of max. 8 Kbyte
• FB (Function Blocks): Max. 128 with a size of max. 8 Kbyte
• FC (Function Calls): Max. 128 with a size of max. 8 Kbyte
• OB (Organization Blocks): Max. 128 with a size of max. 8 Kbyte

The nesting depth is 8 per priority class.

Counters, Timers, and Data Areas

The CPU supports 64 S7 counters and 128 S7 times, each with retentive and adjustable settings. There are 256 bytes available for flag data areas, with retentivity options.

Addressing Volume and Hardware Configuration

The CPU supports various addressing volumes for I/O address areas, process images, digital channels, and analog channels. The hardware configuration allows a maximum of 3 expansion units and supports connection to programming devices or PCs with STEP 7 via the MPI interface.

Interfaces

The CPU features an MPI interface with various functionalities:

• MPI cable length: Max. 9,100 m
• Number of nodes: Max. 32
• Transmission rate: Max. 187.5 kbit/s

Communication Functions

The CPU supports various communication functions such as PG/OP communication, global data communication, S7 basic communication, S7 communication, and more. It is compatible with S5 communication and standard communication (FMS).

Programming and Software

Programming can be done using the STEP 7 software (Version 5.0 or later), and the CPU supports multiple programming languages, including LAD, FBD, STL, SCL, and GRAPH.

Dimensions and Weights

The physical dimensions of the CPU are 80 mm (width) x 125 mm (height) x 130 mm (depth), with a weight of approximately 530 g.

Frequently Asked Questions (FAQ) about Siemens 6ES7314-1AE04-0AB0 SIMATIC S7-300 CPU

Q1: What is the primary function of the Siemens 6ES7314-1AE04-0AB0 CPU?

A1: The 6ES7314-1AE04-0AB0 is a central processing unit (CPU) designed for industrial automation. It performs control and monitoring functions in conjunction with the SIMATIC S7-300 series.

Q2: What is the power supply voltage range for this CPU?

A2: The CPU operates with a rated supply voltage of 24 V DC, within a permissible range of 20.4 V to 28.8 V.

Q3: Can the 6ES7314-1AE04-0AB0 work without a battery backup?

A3: Yes, the CPU can operate without a battery for specific memory areas (4 KB: bit memory, counter, times, and data). However, it also supports backup with a battery for all blocks.

Q4: What is the maximum work memory capacity of the integrated RAM?

A4: The integrated RAM has a maximum capacity of 24 Kbyte, with 24 KB/8 K instructions RAM (integrated).

Q5: How many S7 counters and timers does the CPU support?

A5: The CPU supports 64 S7 counters and 128 S7 times, each with retentive and adjustable settings.

Q6: What are the typical processing times for various operations on this CPU?

A6: Processing times vary, e.g., for bit operations: Typical 0.3 µs, Maximum 0.6 µs; for word operations: Typical 1 µs; for floating-point arithmetic: Typical 50 µs, etc.

Q7: How many DB, FB, FC, and OB blocks can be used with this CPU?

A7: The CPU supports a maximum of 127 DB, 128 FB, 128 FC, and 128 OB blocks, each with a maximum size of 8 Kbyte.

Q8: What communication interfaces are available with the 6ES7314-1AE04-0AB0 CPU?

A8: The CPU features an MPI interface, supporting PG/OP communication, global data communication, S7 basic communication, and S7 communication. It can connect to various devices via the MPI interface.

Q9: Can the CPU be programmed in different languages?

A9: Yes, the CPU supports multiple programming languages, including LAD (Ladder Diagram), FBD (Function Block Diagram), STL (Structured Text), SCL (Structured Control Language), and GRAPH.

Q10: What software is used for programming this CPU?

A10: Programming is done using the STEP 7 software, with versions V5.0 and V5.0 SP1 supported.

Q11: What is the maximum cable length for the MPI interface?

A11: The MPI interface allows a cable length of a maximum of 9,100 m. Without repeaters, it is 50 m, and with 2 repeaters, it is 1100 m. Fiber optic cable connections extend up to 23.8 km.

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