Siemens SIMATIC S7-300, CPU 312 6ES7312-5AC02-0AB0

Specification Sheet for Siemens SIMATIC S7-300, CPU 312 6ES7312-5AC02-0AB0

Basic Information

• Product Model: 6ES7312-5AC02-0AB0

• Product Series: SIMATIC S7-300

• CPU Type: CPU 312

• Application Areas: Designed for Chemical, Electronics, Electrical, and various other industrial automation sectors requiring mid-range performance and reliability.

Hardware Characteristics

• Integrated Interfaces:

• MPI (Multi-Point Interface) for communication with programming devices and other S7 PLCs

• Profibus DP master/slave interface (in this model, 5AC02 specifically indicates the Profibus DP capability)

• Power Supply:

• 24 V DC input, with an acceptable voltage range of 20.4 V to 28.8 V

• Power protection: External surge protection is recommended for power supply cables

• Environmental Requirements:

• Operating temperature range as per Siemens specifications

• IP rating for dust and moisture protection as specified by the manufacturer

Memory Configuration

• Working Memory: 64 KByte (may vary depending on model specifics, but generally higher than the 32 KByte of the 1AE14 model)

• Load Memory: Maximum 8 MByte via MultiMediaCard (MMC) or other supported storage media

• Retentive Memory: Provides 32 KByte for storing retentive data blocks, ensuring data persistence across power cycles

Programming Environment

• Supported Software: STEP 7 V5.5 + SP1 or higher versions are recommended for programming and configuration. Older versions with HSP 218 may also be compatible but may lack support for certain features.

Processing Capabilities

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

• Word Operation Time: Around 0.24 µs for manipulating larger data units

• Fixed-Point Arithmetic Operation Time: Approximately 0.32 µs, suitable for handling numerical calculations

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

Additional Features

• Program Block Quantities:

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

• Maximum number of Function Blocks (FBs) and Functions (FCs): 1024 (each with a maximum size of 32 KByte or as specified by the latest documentation), facilitating modular programming

• Types and quantities of Organization Blocks (OBs): Includes a range of OBs for startup, cyclic execution, interrupts, and error handling (e.g., OB1, OB10, OB35 for interrupts, OB80-series for faults, etc.)

• Counters and Timers:

• S7 Counters: Unlimited, only limited by the available RAM capacity, with retentivity to retain values across power cycles

• S7 Timers: Similarly unlimited by RAM, with retentivity ensuring time-based control across power outages