ABB AC 900F学习笔记124：Freelance_Engineering_System_Configuration-02
380页的厚度，得坚持得住才行。
1 Overview
概述
1.1 Freelance system
Freelance 系统
The Freelance system contains automation functions, graphics, the operator interface, and fieldbus lines (PROFIBUS, FOUNDATION Fieldbus, HART and so on). The integrated environment facilitates engineering, commissioning, maintenance and fieldbus management. The direct operator interface enables easy operation and diagnostics of the entire system.
freelance系统包含自动化功能、操作界面和现场总线线路（PROFIBUS、基金会现场总线、HART等等）。集成环境有利于工程、调试、维护和现场总线管理。直观的操作界面使整个系统的操作和诊断变得容易.
1.1.1 General description - Freelance system
通用描述 - Freelance系统
A Freelance system provides an operator level and process level. The operator level contains the functions for operation and observation, archives and logs, trends and alarms. The tool used for Freelance operator stations is Freelance Operations (FO).
Also an OPC gateway (Freelance OPC server) is available, which allows OPC clients to access data and alarms from the Freelance controllers.
Freelance系统提供操作员级和过程级。操作员级包含操作和观察，归档与日志，趋势和报警功能。freelance 操作员站使用的工具室freelance operation.还提供了一个OPC网关(freelopc服务器)，它允许OPC客户端访问来自freelopc控制器的数据和警报。
The process level contains the open-loop and closed-loop control functions. The control functions are processed in the controllers which communicate with actors and sensors in the field. Freelance supports a various number of controllers like the AC 900F, AC 800F and AC 700F.
过程级保持开环和闭环控制功能。控制功能在控制器中通过与执行器、传感器通讯来执行。Freelance支持各种控制器，比如AC 900F，AC 800F和AC 700F。
The tool used to perform the whole configuration and commissioning of such a Freelance system is Freelance Engineering (FE). This document describes the engineering tool Freelance Engineering (FE).
执行Freelance系统的整个配置和调试的工具是Freelance Engineering（FE)。此文档描述了Freelance Engineering（FE)工程工具。
DWORD). The data type for analog modules is permanently set to UINT. In addition, the following data types are for field devices: INT, DINT, UDINT and REAL.
这个图有点模糊，大体上花了ABB Freelance网络架构情况。
1.1.2 Engineering tool - Freelance Engineering
工程工具 - Freelance Engineering
Freelance Engineering (FE) is a software application for configuration, commissioning, documentation and maintenance of the user programs and displays in the Freelance system.
Freelance Engineering (FE)是用于用户程序的配置、调试、文档和维护的软件应用，显示在Freelance 系统。
Configuration using Freelance Engineering is based on the IEC 61131-3 standard. You can use Freelance Engineering to configure the entire process control level as well as create programs. This is facilitated by the fact that all components access a common database
配置使用Freelance Engineering基于IEC 61131-3标准。你可以使用Freelance Engineering来配置整个控制级别以及创建程序。所有的组件访问公共数据库这就很方便。
The system configuration is saved as a project file and is located in a preset project directory. To process a project, you must first open a project file. You then have unrestricted access to all project data within the project file.
系统配置以项目文件的形式保存于预设的项目路径。要访问项目，你必须打开项目文件。然后你就可以无限制的使用项目文件中所有的项目数据。
The project name and file name of the project file can be selected independently from one another.
项目名和项目文件名可以相互独立的选择（也就是可以不一样）。
