Siemens 6ES7313-6BF03-0AB0 Compact CPU SIMATIC S7-300

Product Overview

This compact CPU integrates a power supply, central processor, and communication interface in a single unit. It features a PROFIBUS DP master port that supports up to 32 connected slave devices. The processor operates with a typical processing time of 0.1 ms for 1,000 binary instructions. It measures 120 mm in width, 125 mm in height, and 130 mm in depth. The unit weighs approximately 680 grams for standard DIN rail mounting. You can expand this system with up to 32 digital and analog I/O modules.

The CPU includes 128 KB of working memory for program and data storage. It retains all data during power loss through an integrated maintenance-free backup battery. The device supports both STEP 7 V5.5 and TIA Portal programming environments. You can connect a programming device directly via the built-in MPI interface. The processor also provides a second interface for point-to-point communication with external devices.

Technical Specifications

Parameter	Specification
Product Type	Compact CPU
Model	6ES7313-6BF03-0AB0
Working Memory	128 KB (integrated)
Processing Speed	0.1 ms / 1,000 binary instructions
PROFIBUS DP	Master, up to 32 slaves
MPI Interface	Yes (12 Mbps)
Point-to-Point Interface	Yes (second interface)
Digital I/O	24 inputs / 16 outputs (integrated)
Analog I/O	4 inputs / 2 outputs (integrated)
Power Supply	24 V DC (integrated)
Backup Battery	Yes (maintenance-free)
Dimensions (W x H x D)	120 mm x 125 mm x 130 mm
Weight	Approx. 680 g
Mounting Type	DIN rail (EN 60715)
Operating Temperature	0 °C to 60 °C
Programming Software	STEP 7 V5.5, TIA Portal

Key Features and Benefits

This controller offers a cost-effective solution for small to medium-sized automation tasks. Its compact design saves valuable space in control cabinets and distribution panels. The integrated I/O reduces the need for additional modules in basic applications. You can expand the system flexibly as your machine requirements grow over time. The CPU’s fast processing ensures real-time response for most industrial processes.

Memory and Data Retention

The working memory stores both the user program and all relevant system parameters. A lithium battery retains the data for approximately 300 days without external power. The CPU automatically performs a memory reset after battery replacement. You can expand the load memory using an optional MMC card. This storage architecture ensures reliable operation during unexpected power interruptions.

Typical Applications

Packaging machines benefit from this CPU’s compact form factor and integrated I/O. Conveyor systems rely on it for basic logic and motion control functions. The processor also serves material handling and small assembly line applications.