Siemens SIMATIC S7-300, CPU 312 6ES7312-1AD10-0AB0

Specification Sheet for Siemens SIMATIC S7-300, CPU 312 6ES7312-1AD10-0AB0

Basic Information

• Product Model: 6ES7312-1AD10-0AB0

• Product Series: SIMATIC S7-300

• CPU Type: CPU 312

• Application Areas: Chemical, Electronics, Electrical, and other industrial automation fields, particularly suited for medium-sized automation tasks requiring advanced processing capabilities.

Hardware Characteristics

• Integrated Interfaces:

• MPI (Multi-Point Interface) for communication with other MPI-compatible devices

• (Note: Additional communication interfaces, such as PROFIBUS DP, may be available through expansion modules)

• Power Supply:

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

• External protection for power supply cables is recommended

Storage Media

• Requires a MultiMediaCard (MMC) for program and data storage

• Supports varying capacities up to the maximum specified for the CPU

Memory Configuration

• Working Memory: 32 KByte, dedicated for program execution and temporary data storage

• Load Memory (MMC): Maximum capacity varies based on the MMC used, but supports sufficient space for complex automation programs

• Retentive Memory: Provides 32 KByte for retaining data blocks across power cycles

Programming Environment

• Supported Software:

• STEP 7 V5.5 + SP1 or higher, offering comprehensive programming and configuration tools

• STEP 7 V5.2 + SP1 or higher can also be used with the addition of HSP 218 (High-Speed Processing package)

Processing Capabilities

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

• Word Operation Time: Approximately 0.24 µs, suitable for handling larger data units

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

• Floating-Point Arithmetic Operation Time: Approximately 1.1 µs, enabling complex mathematical operations

Additional Features

• Program Block Quantities:

• Maximum number of Data Blocks (DBs): 1024, allowing for extensive data organization

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

• Types and Quantities of Organization Blocks (OBs):

• Includes OB1 (main program loop), OB10 (warm restart), OB20/21 (hardware interrupts), OB32/33/34/35 (timed interrupts), OB40 (time-of-day interrupts), OB100 (error handling), OB80/82/85/87 (various system faults), OB121/122 (communication interrupts), among others

• Counters and Timers:

• S7 Counters: Unlimited, with retentivity, allowing for long-term counting tasks

• S7 Timers: Unlimited, with retentivity, suitable for precise timing control