Siemens SIMATIC S7-300, CPU 312 6ES7312-5BF04-0AB0

Specification Sheet for Siemens SIMATIC S7-300, CPU 312 6ES7312-5BF04-0AB0

Basic Information

• Product Model: 6ES7312-5BF04-0AB0

• Product Series: SIMATIC S7-300

• CPU Type: CPU 312

• Application Areas: Designed for Chemical, Electronics, Electrical, and other demanding industrial automation fields requiring high processing power and flexible communication options.

Hardware Characteristics

• Integrated Interfaces:

• MPI (Multi-Point Interface) for communication with other PLCs, PCs, and HMI devices.

• Power Supply:

• Built-in 24 V DC, with an operating voltage range of 19.2 V to 28.8 V.

• External protection for power supply cables is recommended.

• Memory Configuration:

• Working Memory: 32 KByte

• Load Memory: Integrated memory for programs, supports additional MultiMediaCard (MMC) up to 8 MByte for extended storage.

• Retentive Memory: 32 KByte dedicated for retentive data blocks, ensuring data persistence during power outages.

Programming Environment

• Supported Software:

• STEP 7 V5.5 + SP1 or higher for programming, configuration, and maintenance.

• Alternatively, STEP 7 V5.2 + SP1 or higher can be used with HSP 218 (High-Speed Processing package) for enhanced performance.

Processing Capabilities

• Bit Operation Time: Approximately 0.1 µs, enabling fast logic processing.

• Word Operation Time: Approximately 0.24 µs, suitable for basic arithmetic operations.

• Fixed-Point Arithmetic Operation Time: Approximately 0.32 µs, for precise calculations.

• Floating-Point Arithmetic Operation Time: Approximately 1.1 µs, ideal for complex mathematical computations.

Additional Features

• Program Block Quantities:

• Data Blocks (DBs): Maximum 1024, allowing for extensive data storage and manipulation.

• Function Blocks (FBs) and Functions (FCs): Maximum 1024 of each, with a maximum size of 32 KByte per block, facilitating modular programming.

• Organization Blocks (OBs): Includes various OB types such as OB1 (main program), OB10 (warm restart), OB20/21 (diagnostic interrupts), OB32/33/34/35 (timed interrupts), OB40 (error handling), OB100 (initialization), OB80/82/85/87 (hardware interrupts), OB121/122 (synchronous errors), etc., ensuring comprehensive system control.

• Counters and Timers:

• S7 Counters: Unlimited (limited only by RAM capacity), offering retentivity for counting tasks that need to persist across power cycles.

• S7 Timers: Unlimited (limited only by RAM capacity), also with retentivity, enabling precise timing control even during power interruptions.