Siemens 6ES7318-3EL01-0AB0 CPU 319-3 PN/DP

High-Performance Controller for Complex S7-300 Applications

This advanced CPU handles demanding automation tasks with exceptional processing speed. It combines PROFINET and PROFIBUS interfaces for versatile connectivity. Many plants deploy this controller for motion control and high-speed processing applications. The unit offers scalable performance for complex system architectures.

Technical Specifications

Parameter	Specification
Model	6ES7318-3EL01-0AB0
Dimensions	125 mm × 130 mm × 70 mm (W × H × D)
Weight	0.70 kg
Power Supply	24 V DC (from backplane)
Power Consumption	2.5 W typical
Program Memory	1.5 MB (integrated RAM)
Data Memory	1.5 MB (integrated RAM)
Load Memory	8 MB (MMC card required)
Processing Speed	0.05 µs (bit instruction)
Bit Instruction Time	0.05 µs
Word Instruction Time	0.2 µs
Integer Math Time	0.2 µs
Floating Point Math	0.5 µs
Communication Interfaces	1 × PROFINET (2-port switch), 1 × PROFIBUS DP (MPI/DP)
Transmission Rate (PN)	10/100 Mbps
Transmission Rate (DP)	Up to 12 Mbps
I/O Address Space	8 KB input / 8 KB output
Number of Connections	48 maximum
Clock Speed	100 MHz
Real-Time Clock	Yes (battery-backed)
Operating Temperature	0°C to +60°C
Storage Temperature	-40°C to +70°C
Humidity Range	5% to 95% RH (non-condensing)
Protection Class	IP20
Certifications	CE, UL, cULus, FM

Processing Performance and Execution Speed

This CPU executes bit instructions in just 0.05 microseconds. Word and integer operations complete in 0.2 microseconds. Floating point math executes in 0.5 microseconds for fast calculations. This processing power supports high-speed automation and motion control applications.

Memory Capacity and Storage Architecture

Program memory holds 1.5 MB of user code and logic. Data memory provides another 1.5 MB for variables and system data. The CPU requires an 8 MB MMC card for load memory storage. This memory configuration supports large-scale control programs.

Communication Interfaces and Network Integration

The integrated PROFINET interface includes a 2-port switch for line topologies. A PROFIBUS DP interface supports MPI and DP communication protocols. The CPU connects to HMIs, drives, and distributed I/O systems. This dual-network capability ensures versatile integration options.

Address Space and I/O Management

The CPU supports 8 KB of input and 8 KB of output address space. This capacity accommodates large distributed I/O configurations. Users can connect multiple PROFIBUS DP stations seamlessly. The address space supports up to 48 simultaneous connections.

Connectivity and Connection Capacity

The controller supports up to 48 simultaneous communication connections. These connections include HMI panels, programming devices, and other CPUs. The two-port Ethernet switch enables daisy-chaining of PROFINET devices. This architecture simplifies network wiring and reduces switch requirements.

Power Supply and Energy Consumption

The module draws only 2.5 W from the S7-300 backplane. This low consumption supports dense rack configurations. The real-time clock maintains time during power outages. A backup battery preserves the clock and retentive memory.

Mechanical Construction and Physical Attributes

This CPU measures 125 mm wide and weighs 0.70 kg. The standard S7-300 form factor fits existing rack systems. LED indicators show run, stop, and fault status. The front panel includes an MPI/DP port for programming access.

Certification and Safety Compliance

The 6ES7318-3EL01-0AB0 holds CE, UL, cULus, and FM certifications. These approvals confirm compliance with international industrial standards. Each CPU undergoes extensive factory testing. This quality process ensures reliable operation in critical automation applications.