SIEMENS 6ES7315-2AH14-0AB0 SIMATIC S7-300 CPU 315-2DP

Overview

The CPU with medium to large program memory and quantity structures for optional use of SIMATIC engineering tools

High processing power in binary and floating-point arithmetic

Used as central controller in production lines with central and distributed I/O

PROFIBUS DP master/slave interface

For comprehensive I/O expansion

For configuring distributed I/O structures

Isochronous mode on PROFIBUS

SIMATIC Micro Memory Card required for operation of CPU.

Application

The CPU 315-2 DP is a CPU with a medium-sized to large program memory and PROFIBUS DP master/slave interface. It is used in plants containing distributed automation structures in addition to a centralized I/O.

It is often used as the standard-PROFIBUS DP master in SIMATIC S7-300. The CPU can also be used as distributed intelligence (DP slave).

Due to their quantity structures, they are ideal for the use of SIMATIC engineering tools, e.g.:

Programming with SCL

Machining step programming with S7-GRAPH

Furthermore, the CPU is an ideal platform for simple software-implemented technological tasks, e.g.:

Motion control with Easy Motion Control

Solving of closed-loop control tasks using STEP 7 blocks or standard/modular PID control runtime software

Enhanced process diagnostics can be achieved by using SIMATIC S7-PDIAG.

Design

The CPU 315-2 DP is equipped with the following:

Microprocessor;

the processor achieves a processing time of approximately 50 ns per binary instruction and 0.45 µs per floating-point operation.

256 KB work memory (corresponds to approx. 85 K instructions);

the extensive work memory for program sections relevant to execution offers sufficient space for user programs. SIMATIC Micro Memory Cards (8 MB max.) as load memory for the program also allow the project to be stored in the CPU (complete with symbols and comments) and can be used for data archiving and recipe management.

Flexible expansion capability;

max. 32 modules (4-tier configuration)

MPI multi-point interface;

the integrated MPI interface can establish as many as 16 connections simultaneously to S7-300/400 or connections to programming devices, PCs, OPs. Of these connections, one is always reserved for programming devices and another for OPs. The MPI makes it possible to set up a simple network with a maximum of 16 CPUs via "global data communication".

PROFIBUS DP interface:

The CPU 315-2 DP with PROFIBUS DP master/slave interface allows a distributed automation configuration offering high speed and ease of use. From the user's point of view, the distributed I/Os are treated the same as central I/Os (identical configuration, addressing and programming).

The PROFIBUS DP V1 standard is supported in full. This enhances the diagnostics and parameterization capability of DP V1 standard slaves.

Function

Password protection;

a password concept protects the user program from unauthorized access.

Block encryption;

the functions (FCs) and function blocks (FBs) can be stored in the CPU in encrypted form by means of S7-Block Privacy to protect the know-how of the application.

Diagnostics buffer;

the last 500 error and interrupt events are stored in a buffer for diagnostic purposes, of which 100 are stored retentively.

Maintenance-free data backup;

the CPU automatically saves all data (up to 128 KB) in case of a power failure so that the data are available again unchanged when the power returns.