西门子 CPU 319-3 PN/DP

概述

• The CPU with high command processing performance, large program memory and quantity framework for demanding applications
  
• For cross-sector automation tasks in series machine, special machine and plant construction
  
• Used as central controller in production lines with central and distributed I/O on PROFIBUS and PROFINET
  
• Distributed intelligence in Component Based Automation (CBA) on PROFINET
  
• PROFINET 代理，用于基于部件的自动化（CBA）中的 PROFIBUS DP 智能设备
  
• Isochronous mode on PROFIBUS
  
• Optionally supports the use of SIMATIC engineering tools

应用

The CPU 319-3 PN/DP is the fastest S7-300 CPU with a large program memory. It is used in plants containing distributed automation structures in addition to centralized I/O. It is used, for example, as central controller in production lines or as machine controller with high processing speed demands.

Its quantity framework makes it optimally suitable for use of SIMATIC engineering tools, e.g.:

• 用SCL编程
  
• Sequence 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.

As a result of the CPU's integral communications facilities, networked automation solutions are possible without additional components.

设计

CPU 319-3 PN/DP 装配有：

• Multi-processor system with additional ERTEC 400 ASIC for PROFINET communication
  
• High command processing and communications performance
  
• 1.4 MB RAM (corresponds to approx. 470 K instructions);
  the extensive RAM for program components relevant to execution offers sufficient space for user programs. 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)
  
• Combined MPI/DP interface;
  the first MPI/DP integrated interface can establish as many as 32 connections simultaneously to S7-300/400 or connections to PG, PC, OP. Of the connections, one is permanently reserved for programming devices and one for OPs.
  The MPI supports simple networking of up to 32 CPUs over "Global data communication".
  This interface can be reconfigured from MPI interface to DP interface.DP接口可作为DP主站或DP从站使用。
  PROFIBUS DP interface:
  The PROFIBUS DP V1 standard is fully supported.这将增加 DP V1 标准从站在诊断和参数赋值能力的范围。
  
• DP interface;
  the second DP integrated interface can establish as many as 32 connections simultaneously to S7-300/400 or connections to PG, PC, OP. One of the connections is permanently reserved for PG and one for OP.
  The DP interface can be used as DP master or DP slave. PROFIBUS DP slaves can be operated in isochronous mode at this interface. The PROFIBUS DP V1 standard is fully supported.这将增加 DP V1 标准从站在诊断和参数赋值能力的范围。
  
• Ethernet interface;
  the third integrated interface of the CPU 319-3 PN/DP is a PROFINET interface based on Ethernet TCP/IP. It supports the following protocols:
  
• SIMATIC 控制器间进行数据通讯的 S7 通讯
  
• PG/OP communication for programming, commissioning and diagnostics through STEP 7
  
• 与HMI和SCADA连接的PG/OP通讯
  
• Open TCP/IP, UDP and ISO-on-TCP (RFC1006) communication over PROFINET
  
• SIMATIC NET OPC-Server for communication with other controllers and I/O devices with own CPU

功能

• 口令保护；
  用户程序使用密码保护，可防止非法访问。
  
• Diagnostics buffer;
  The last 100 errors and interrupt events are saved in a buffer for diagnostics purposes.
  
• Maintenance-free data backup;
  the CPU automatically saves all data (up to 700 KB) in case of power failure so that the data are available again unchanged when the power returns.

STEP 7可用于对S7组态设置参数以及设置CPU的属性和响应参数：

• MPI multi-point interface;
  Determination of node addresses.
  
• Restart/cycle time behavior;
  stipulation of maximum cycle time and loading
  
• Isochronous mode interrupts;
  setting of DP master system, sub-process image number and delay time
  
• Clock memories;
  Address setting
  
• Retentivity;
  Setting of retentive areas
  
• Time-of-day interrupts;
  Setting of date, time of start and periodicity
  
• Cyclic interrupts;
  Setting of periodicity
  
• System diagnostics;
  Definition of the handling and scope of diagnostics messages
  
• Clock;
  Setting of synchronization mode in AS or on MPI
  
• Protection level;
  definition of access rights to program and data
  
• Operation;
  selection of either test or process mode
  
• Communication;
  reservation of connection resources
  
• PROFIBUS DP master/slave interfaces;
  user-defined address assignment for distributed I/O
  
• PROFINET interface;
  parameterization of time synchronization using NTP procedure

• Status and error indications;
  LEDs indicate e.g. hardware, programming, time, I/O or bus errors, as well as operating states such as RUN, STOP and restart.
  
• Test functions;
  The PG can be used to display signal states in program execution, modify process variables independently of the user program, and read out the contents of stack memories.
  
• Information functions;
  You can use the programming device to obtain information about the storage capacity and operating mode of the CPU as well as the current utilization of the main and load memories, current cycle times and diagnostic buffer contents in plain text.

• PG/OP通讯
  
• 共享数据通讯
  
• S7 标准通讯
  
• S7 通讯
  
• S5­compatible communication
  
• 路由
  
• PROFIBUS DP master/slave
  
• Open communication over TCP/IP, UDP and ISO-on-TCP (RFC1006)
  
• PROFINET IO controller
  
• PROFINET CBA

The CPU provides many extensive system functions for diagnostics, parameterization, synchronization, alerting, time measurement, etc.