Siemens 6ES7953-8LJ31-0AA0 Central Processing Unit (CPU)

Siemens SIMATIC S7-300 CPU 317F-2 PN/DP Overview

The Siemens SIMATIC S7-300 CPU 317F-2 PN/DP (Order No. 6ES7953-8LJ31-0AA0) is a powerful central processing unit (CPU) for building fail-safe automation systems with integrated safety functions. It belongs to the SIMATIC S7-300 series, offering high performance, multiple communication interfaces, and integrated safety technology.

Product Detailed Description

• Function:

• Executes user programs to implement logic control for industrial automation tasks.

• Integrated fail-safe functionality for applications requiring a high level of safety (compliant with SIL 3).

• Provides a PROFINET interface for high-speed Ethernet communication.

• Provides a PROFIBUS DP interface for connecting distributed I/O and other PROFIBUS devices.

• Supports various programming languages such as STEP 7 (LAD, FBD, STL, SCL, GRAPH FC/FB).

• Built-in work memory for storing programs and data.

• Integrated load memory (Micro Memory Card) for storing programs and data, and supports program and firmware updates.

• Offers diagnostic functions for easy troubleshooting.

• Features:

• High-performance CPU with fast instruction execution speed.

• Integrated PROFINET IO controller functionality for connecting up to 128 PROFINET IO devices.

• Integrated PROFINET CBA/S7 communication functionality.

• Integrated PROFIBUS DP master/slave interface.

• Supports Isochronous Mode.

• Integrated safety functions compliant with IEC 61508 SIL 3.

• Supports PROFIenergy.

• Real-time clock.

• Maintenance-free retentive data area.

Product Parameters

• CPU Type: CPU 317F-2 PN/DP

• Order Number: 6ES7953-8LJ31-0AA0

• Work Memory: 2 MB

• Load Memory: Requires Micro Memory Card (MMC)

• Instruction Execution Time (per bit instruction): Approx. 25 ns

• PROFINET Interface:

• 1 x RJ45 interface, supports PROFINET IO Controller and PROFINET CBA/S7 communication

• Up to 128 PROFINET IO devices can be connected

• PROFIBUS DP Interface:

• 1 x 9-pin D-sub connector, supports DP master or DP slave functionality

• Baud Rate: 9.6 kbit/s to 12 Mbit/s

• Digital Inputs/Outputs (Onboard): None

• Analog Inputs/Outputs (Onboard): None

• Counters/Frequency Measurement (Onboard): None

• Communication Functions:

• PROFINET IO

• PROFINET CBA/S7 Communication

• PROFIBUS DP Master/Slave

• PG/OP Communication

• S7 Basic Communication

• ISO-on-TCP

• TCP/IP

• UDP

• PROFIenergy

• Safety Functions:

• Compliant with IEC 61508 SIL 3

• Fail-safe digital inputs/outputs (via safety I/O modules)

• Fail-safe analog inputs/outputs (via safety I/O modules)

• Power Supply: 24 V DC

• Power Consumption: Typ. 8 W

• Dimensions (W x H x D): 40 mm x 125 mm x 130 mm

• Weight: Approx. 370 g

• Ambient Temperature: 0 °C to +60 °C

• Protection Class: IP20

Product Advantages

• High Performance: Fast instruction execution speed and large work memory, suitable for complex control tasks.

• Integrated Safety Functions: Built-in fail-safe functionality for building safety automation systems compliant with SIL 3.

• Multiple Communication Interfaces: Integrated PROFINET and PROFIBUS DP interfaces for easy connection of various automation devices.

• Flexible Expandability: Can be flexibly expanded using SIMATIC S7-300 I/O modules.

• Mature Technology: The SIMATIC S7-300 series is a mature and reliable platform in industrial automation.

• Powerful Programming Capabilities: Supports various programming languages compliant with IEC 61131-3.

• Easy Diagnostics: Integrated diagnostic functions for easy troubleshooting and system maintenance.

Precautions

• Correct Selection: Choose the appropriate CPU model based on the specific control tasks, safety requirements, and communication needs.

• Power Requirements: Use a 24 V DC power supply that meets the specifications.

• Environmental Conditions: Ensure the operating environment temperature and humidity are within the permissible range.

• Installation Requirements: Follow Siemens' installation guidelines, ensuring the CPU is securely mounted and properly grounded.

• Programming Software: Requires STEP 7 programming software for program development and configuration, and Safety Advanced software for safety functions.

• Micro Memory Card (MMC): The CPU requires a Micro Memory Card to operate. Select the appropriate capacity based on project requirements.

• Safety-Related Wiring: For safety-related input/output signals, use wiring methods and safety I/O modules that comply with safety standards.

Product Applications

The Siemens SIMATIC S7-300 CPU 317F-2 PN/DP is widely used in industrial automation applications requiring integrated safety functions, such as:

• Machine Safety: Safety gate monitoring, emergency stop circuits, two-hand control, etc.

• Conveyor Technology: Safe stopping, zone monitoring, etc.

• Process Automation: Emergency shutdown systems, safety interlocks, etc.

• Packaging Machinery: Control of safety guards and interlocking devices.

• Machine Tools: Safety-related motion control.

• **Various automation applications requiring compliance with SIL 3 safety level.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapor

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