Siemens SIMATIC S7-300, CPU 312 6ES7312-5AC82-0AB0

Specification Sheet for Siemens SIMATIC S7-300, CPU 312 6ES7312-5AC82-0AB0

Basic Information

• Product Model: 6ES7312-5AC82-0AB0

• Product Series: SIMATIC S7-300

• CPU Type: CPU 312

• Application Areas: Designed for Chemical, Electronics, Electrical, and various other industrial automation sectors requiring medium-sized to complex control tasks.

Hardware Characteristics

• Integrated Interfaces:

• MPI/DP Interface: Provides both MPI (Multi-Point Interface) for programming and communication, as well as DP (Distributed Profinet) capabilities for connecting to Profibus DP networks.

• Power Supply:

• AC Supply: Built-in for 85-264 VAC, 47-63 Hz, enabling worldwide use with auto-ranging capability.

• DC Supply: Optionally supports 24 V DC for redundant power supply configurations.

• Power Protection: External surge protection recommended for both AC and DC power supply lines.

Storage Media

• Memory Card: Supports CompactFlash® or MicroSD card for user programs, data, and recipes.

Memory Configuration

• Working Memory: 96 KByte, providing ample space for program execution and temporary data storage.

• Load Memory (MMC/CF/MicroSD): Maximum capacity varies based on the type of memory card used, supporting large program sizes and extensive data logging.

• Retentive Memory: Dedicated memory area for retentive data blocks, ensuring data persistence across power cycles.

Programming Environment

• Supported Software: STEP 7 Professional or TIA Portal (depending on software version and release), supporting versions compatible with the CPU 312.

Processing Capabilities

• Bit Operation Time: Approximately 0.1 µs, ensuring fast execution of basic logic operations.

• Word Operation Time: Approximately 0.24 µs, enabling efficient manipulation of larger data units.

• Fixed-Point Arithmetic Operation Time: Approximately 0.32 µs, suitable for precision calculations within the controller.

• Floating-Point Arithmetic Operation Time: Approximately 1.1 µs, providing capabilities 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): Up to 1024 each, with a maximum size of 32 KByte per block, facilitating modular programming and reuse of code.

• Organization Blocks (OBs): Includes standard OBs such as OB1 (main program loop), OB10-OB17 (error handling), OB30-OB38 (periodic interrupts), OB80-OB87 (hardware interrupts), and more, enabling comprehensive system control and monitoring.

• Counters and Timers:

• S7 Counters: Unlimited, only limited by available RAM, with retentivity for critical counting tasks.

• S7 Timers: Similarly unlimited, supporting both timing functions and retentivity for precise timing control across power cycles.