Readme
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======================================================================== EPSON Stylus(R) 高质量 ESC/P 2 打印机驱动程序README文件(Microsoft (R) Windows (R) 2000)========================================================================感谢你购买 EPSON 打印机。
此文件包含有关此打印机的信息。
此 README 文件有以下内容:[内容]1. 导言2. 重要版权信息3. 驱动程序安装注意事项4. 使用 EPSON Status Monitor 35. 问题与解答6. 应用程序注意事项7. 已知打印机驱动程序问题------------------------------------------------------------------------------- 1. 导言======================================================================== 在你拨打技术咨询电话前,请一定先阅读此README文件。
此文件包含一些打印机驱动程序和特定应用程序问题的解答。
2. 重要版权信息======================================================================== 此应用软件- 支持Windows 2000 系统的EPSON Stylus高质量ESC/P 2 打印机驱动程序,以 " AS IS " 方式提供。
在特定要求下对驱动程序的转让和/或修正本公司不予提供。
此软件可拷贝和分发给 EPSON 打印机的用户,但不能修改。
所有磁盘上的文件在拷贝时不能修改,包括专利标志和注意事项。
在编写`readme.md` 文件时,通常使用Markdown 语法来格式化文本。
Markdown 是一种轻量级标记语言,用于编写格式化的文本,并支持使用简单的语法来添加标题、列表、表格、代码块等元素。
以下是一些常见的Markdown 语法和示例:
1. 标题:使用井号`#` 来表示不同级别的标题。
例如,`# 标题` 表示一级标题,`## 子标题` 表示二级标题。
2. 列表:使用星号`*` 或加号`+` 来表示无序列表,或者使用数字和点号`.` 来表示有序列表。
3. 表格:使用管道符`|` 来分隔列,使用冒号`:` 来分隔表头和内容。
4. 代码块:使用反引号``` 来表示代码块。
如果需要在代码块中指定语言,可以在反引号后面加上语言名称。
例如:
```python
print("Hello, world!")
```
5. 其他元素:还可以使用Markdown 语法来添加链接、图片、强调等元素。
请注意,具体的Markdown 语法和示例可能会因不同的Markdown 解析器而略有差异。
以上示例是基于通用的Markdown 语法规则,但在实际编写`readme.md` 文件时,可能需要根据所使用的解析器和项目规范进行适当的调整。
如何快速阅读源代码1、阅读源代码的说明文档,比如本例中的README, 写的非常的详细,仔细读过之后,在阅读程序的时候往往能够从README文件中找到相应的说明,从而简化了源程序的阅读工作。
2、如果源代码有文档目录,一般为doc或者docs,最好也在阅读源程序之前仔细阅读,因为这些文档同样起了很好的说明注释作用。
3、在阅读程序的同时,最好能够把程序存入到cvs之类的版本控制器中去,在需要的时候可以对源代码做一些修改试验,因为动手修改是比仅仅是阅读要好得多的读程序的方法。
在你修改运行程序的时候,可以从cvs中把原来的代码调出来与你改动的部分进行比较(diff命令), 可以看出一些源代码的优缺点并且能够实际的练习自己的编程技术。
4、从makefile文件入手,分析源代码的层次结构,找出哪个是主程序,哪些是函数包。
这对于快速把握程序结构有很大帮助。
5、分析函数包(针对C程序),要注意哪些是全局函数,哪些是内部使用的函数,注意extern关键字。
对于变量,也需要同样注意。
先分析清楚内部函数,再来分析外部函数,因为内部函数肯定是在外部函数中被调用的。
6、需要说明的是数据结构的重要性:对于一个C程序来说,所有的函数都是在操作同一些数据,而由于没有较好的封装性,这些数据可能出现在程序的任何地方,被任何函数修改,所以一定要注意这些数据的定义和意义,也要注意是哪些函数在对它们进行操作,做了哪些改变。
7、从main函数入手,一步一步往下阅读,遇到可以猜测出意思来的简单的函数,可以跳过。
但是一定要注意程序中使用的全局变量(如果是C程序),可以把关键的数据结构说明拷贝到一个文本编辑器中以便随时查找。
8、阅读程序的同时,要注意一些小工具的使用,能够提高速度,比如vi中的查找功能,模式匹配查找,做标记,还有grep,find这两个最强大最常用的文本搜索工具的使用。
使用SCST通过FC方式进行卷管理之前必须搭建测试环境:以下是搭建测试环境所需硬件及软件。
测试环境列表:服务器端(target):服务器型号:NP370D2光纤卡:1块,型号QLA 2460内核版本:Linux 2.6.24所需软件包:scst-1.0.1.1(SCST core )scstadmin-1.0.6 (简化scst配置的工具软件)qla_isp-1.0.2(针对SCST core的FC卡驱动) 客户端(Initiator):服务器型号:AS500N2光纤卡:1块,型号QLA2460内核版本:Red Hat 企业版5 (kernel 2.6.18)所需软件包:qlafc-linux-8.02.23-3 (FC卡驱动)standalone_sansurfer5.0.1b57_linux(FC卡管理软件)环境搭建详细过程:一.Target端配置以下是target端的配置方法:(1)首先配置target 端,给内核打补丁:Type: patch -p0 scst_exec_req_fifo-2.6.X.patchpatch -p0 io_context-2.6.X.patch内核必须关闭HIGHMEM(通过make menuconfig中配置),否则scst_user模块是无法加载上去的(2)编译和安装SCST模块进入到scst-1.0.1.1目录中Type: makemake install(3)加载SCST模块(scst.ko)Type: cd /lib/modules/2.6.18-92.e15/extramodprobe scst(4)加载所需要的device handlers模块测试实验中加载scst_vdisk.ko模块,所以可以用如下的命令进行加载:Type: cd /lib/modules/2.6.18-92.e15/extra/Devicehandlersmodprobe scst_vdisk(5)编译和安装qla_isp-1.0.1。
标题:深入理解和探索Readme Viewer的使用1.引言Readme Viewer是一个简单而强大的工具,它能够帮助用户轻松阅读、编辑和管理Markdown格式的Readme文件。
它的使用范围广泛,可以应用于软件开发、项目管理、团队协作等多个领域。
在本文中,我们将深入探讨Readme Viewer的使用方法和技巧,帮助您更全面地理解和运用这一工具。
2.Readme Viewer的基本功能在开始深入探讨Readme Viewer的使用之前,让我们先来了解一下它的基本功能。
Readme Viewer可以打开、编辑和保存Markdown 格式的Readme文件,支持实时预览和代码高亮显示。
它还具有自动转换格式、插入表格和图片等实用功能,是软件开发人员和项目经理不可或缺的工具之一。
3.如何使用Readme Viewer3.1 安装和启动要使用Readme Viewer,首先需要从官方全球信息湾或应用商店下载安装,并在电脑或手机上启动。
安装完成后,您可以双击图标或点击应用程序来打开Readme Viewer。
3.2 打开和编辑Readme文件在Readme Viewer的主界面上,您可以点击“打开”按钮来选择需要编辑的Readme文件,或者直接拖拽文件至界面中即可打开。
编辑功能非常简单,您可以直接在编辑框中进行文字修改,也可以插入信息、图片或表格等元素。
3.3 实时预览和保存Readme Viewer同时支持实时预览功能,您可以随时查看编辑后的效果。
编辑完成之后,记得点击“保存”按钮来保存您的修改,以确保不会丢失任何重要内容。
4.更高级的功能和技巧4.1 自动转换格式Readme Viewer可以自动转换Markdown格式的文本为HTML 格式,让您可以直观地查看和共享Readme文件的内容。
4.2 插入表格和图片除了基本的文字编辑之外,Readme Viewer还支持插入表格和图片的功能。
这可以让您更直观地展示和管理项目的相关信息。
README.md⽂档编写⽂章参考⾃:为什么要写这篇博客? 其实我是⼀个⼊坑已经半年的程序员,因为不是计算机专业,只能⾃⼰摸索,所以我深知博客的重要性。
每次我的学习笔记啊,项⽬的,⾯试题啊,有的,只要有时间,我肯定上传上来,⼀⽅⾯⾃⼰可以随时随地的看,另⼀⽅⾯也可以⽅便⼤家。
了解⼀个项⽬,恐怕⾸先都是通过其Readme⽂件了解信息。
如果你以为Readme⽂件都是随便写写的那你就错了。
github,oschina git gitcafe的代码托管平台上的项⽬的Readme.MD⽂件都是有其特有的语法的。
称之为Markdown语法,今天要写的是关于README⽂件在windows中如何写,怎么写出来才符合要求,写出来才好看,这样就不得不说⼀下MarkDown编译器了。
也许很多⼤神说,Markdown这么简单的,还需要写个博客炫耀? 其实你错了,对于我们这些在windows上操作惯了的野路⼦,根本对除了word之外的编辑语⾔不感冒,也不习惯,但是每次项⽬都会需要README⽂件,记得我第⼀次写的README⽂件是TXT格式,被⽼师嘲笑了,说README⽂件是.md格式,但是我⾃⼰⽐较笨,请教了⼀个哥们,终于知道了写README的好⽅法,那就是使⽤mardkdown⼯具,我下载的是有道云笔记(我还⽤的是windows操作系统),他不但有MARKDOWN,更重要的是,还有MarkDown使⽤指南,(⼤家不要误会,我不是推销这个软件,对于还是⼩⽩的我,觉得遇到了神器,很激动)。
既然有这个了,那么我的问题就迎刃⽽解了。
这篇⽂说到这⾥,这才刚刚开始,下⾯主要介绍⼀下 MarkDown的主要⽤法,⽅便⼤家写README⽂件。
为什么要写README⽂件? 对于这个问题详解,请看博客: 这个问题很简单,因为README的编写,过了很长时间后,你仍然知道你当初写了什么;因为README的编写,其他⼈看你的代码不需要那么费劲;因为README的编写,你代码的质量就⼤⼤的提⾼;因为README的编写,你的语⾔⽔平就⼤⼤的提⾼了。
SIMATICSTEP 7 Professional 2010Engineering Software for SIMATIC S7 / M7 / C7Notes on Installation and UsageThese notes should be considered more up-to-date than the information in other documents. Readthe notes carefully, because they contain information on installing and using STEP 7 Professional.Also read the Special Notes of the STEP 7 Professional parts of products.Important amendments to this Service Pack are in italics and identified with the note "New as of thisversion".Note when printing the file that the left and right margins are set to a width of 25 millimetersfor A4 portrait size.ContentsContentsNotes on Installation1Contents of the Consignment2Hardware Requirements3Software Requirements3.1Operating Environment3.2Memory Requirements3.3Compatibility with Other Software Products3.4Online Documentation4Installation4.1Installation of STEP 7 Professional4.2License Key of STEP 7 Professional4.3Uninstalling STEP 7 Professional5Additional Notes5.1Special Characteristics of the MS Windows 7 Operating System6Terms of License and Disclaimer of Liability for Open Source SoftwareNotes on InstallationThe installation notes contain important information that you will require in order to install STEP 7Professional. Read these notes before installing the software.1 Contents of the ConsignmentYou received one of the following products with this consignment:STEP 7 Professional Floating LicenseOrder number: 6ES7810-5CC11-0YA5The following items are included in this package:∙DVD STEP 7 Professional∙ 1 STEP 7 Professional Floating License Stick∙ 1 Software Product CertificateSTEP 7 Professional Rental License (50h)Order number: 6ES7810-5CC11-0YA6The following items are included in this package:∙DVD STEP 7 Professional∙ 1 STEP 7 Professional Rental License Stick∙ 1 Software Product CertificateSTEP 7 Professional Upgrade (Edition 01/2000, 08/2000, 08/2001,12/2002, 2004, 2006 > Professional 2010),Order number: 6ES7810-5CC11-0YE5The following items are included in this package:∙DVD STEP 7 Professional∙ 1 License Key Disk with STEP 7 Professional upgrade license∙ 1 Software Product Certificate∙ 1 Product InformationSTEP 7 Professional Powerpack (STEP 7 V3/V4/V5.0/V5.1/V5.2/V5.3/V5.4/V5.5 -> STEP7 Professional 2010)Order number: 6ES7810-5CC11-0YC5The following items are included in this package:∙DVD STEP 7 Professional∙ 1 License Key Disk with STEP 7 Professional PowerPack license Stick∙ 1 Software Product Certificate∙ 1 Product InformationSTEP 7 Professional Data Medium (Trial License, 14 days)Order number: 6ES7810-5CC11-0YA7The following items are included in this package:∙DVD STEP 7 ProfessionalContents of DVD STEP 7 Professional∙Folder CD_1:-STEP 7 V5.5-S7-PLCSIM V5.4 SP4-S7-PCT V2.1-Automation License Manager V5.0 incl. SP1∙Folder CD_2:-S7-GRAPH V5.3 incl. SP6-S7-SCL V5.3 incl. SP5-SIMATIC iMap STEP 7 Addon-file "STEP 7 - What's New.rtf"-file "S7-GRAPH - What's New.rtf"-file "S7-SCL - What's New.rtf"-Electronic manuals for STEP 7 V5.5-Electronic manuals for S7-GRAPH V5.3-Electronic manuals for S7-SCL V5.3-Electronic manuals for S7-PLCSIM V5.4-Command Interface description-Description of the Central Installation Procedure-New as of this version: source code of the OSS software (folder "Open Source Software") The manuals are available in an installable form in the folder CD_2 and are optionally available on your computer after STEP 7 Professional has been installed. If you do not install the manuals, you can also view at any time on the data carrier.∙Folder "Optional Components"-Folder "Communication Blocks"Documentation of blocks FETCH/WRITE-FBs 210 and 220.New as of this version:-Folder "S7 Web2PLC"Application for creation and setup of user-defined Web pages for the Web server of the CPU. -Folder "S7 Block Privacy"Application for encoding of blocks.Notes:A block protected with Block Privacy can only be loaded to the following CPUs:-S7-300 and ET 200 CPUs as of firmware V3.2-S7-400 CPUs as of firmware V 6- A block protected with "Block Privacy" will not be considered in the reference data lists! Keep this in mind when creating protected blocks. All global variables used in creating protected blockscannot be entered in the reference data list. This means you should not use global variables inthe protected blocks..2 Hardware RequirementsIn order to work with the STEP 7 Professional, you need a programming device or a PC with thefollowing minimum requirements for processor speed/performance (recommendations fromMicrosoft), RAM and graphics capability:Use a programming device or PC with the latest performance capabilities if you are editing extensiveSTEP 7 projects or working with hardware configurations containing several hundred modules (CPUs,slaves, I/O devices).In addition, you will need an external prommer for SIMATIC memory cards / MMC if you are using aPC and want to save your user programs to EPROMs and a SIMATIC NET interface if you want touse online functions to the PLC system with your personal computer.New as of this version: As of STEP 7 V5.5 you can use the USB prommer without installatingadditional software. The necessary functionality has been integrated in STEP 7.Further notes on MS Windows 7:∙Can run with DirectX9∙128 MB separate graphics memory∙The performance of the graphics system architecture can have a considerable influence on the STEP 7 Professional performance.3 Software Requirements3.1 Operating EnvironmentOperating SystemSTEP 7 Professional is a 32-bit application that is released for the following operating systems:∙MS Windows XP Professional with SP2 or SP3∙MS Windows Server 2003 SP2 / R2 SP2 Standard Edition as workstation computer∙New as of this version: MS Windows 7 32 Bit Ultimate, Professional Enterprise (standard installation). The Windows XP mode under Windows 7 has not been approved yet.STEP 7 Professional has not been tested for the following operating systems; use at your own risk:∙MS Windows XP Professional with SP1∙MS Windows Server 2003, SP1, SP1 R2∙MS Windows Vista Ultimate, Business and Enterprise∙MS Windows Server 2008 std. Edition SP1 and SP2STEP 7 Professional cannot be installed or operated under:∙MS Windows 3.1∙MS Windows for Workgroups 3.11∙MS Windows 95∙MS Windows 98∙MS Windows Millennium∙MS Windows NT 4.0∙MS Windows 2000∙MS Windows XP Home∙MS Windows XP Professional (without SP)∙MS Windows Vista Home Basic, Premium∙MS Windows Vista 64 Bit versions∙ MS Windows 7 64 Bit versionsImportant Additional Note:∙Special considerations when installing the software on MS Windows Server 2008:You need administrator rights to configure the PG/PC interface or install hardware supportpackages. The user rights from the user group "Siemens TIA Engineer" are not sufficient.Special consideration when installing the software on MS Windows 7: Observe the notes in the paragraph "Special Characteristics of the MS Windows 7 Operating System" regarding the usergroup "Siemens TIA Engineer".Internet ExplorerAll operating systems must be using MS Internet Explorer 6.0 (or higher).Display of PDF filesNew as of this version: To read the supplied PDF files, you need a PDF reader that is compatible withPDF 1.7 (ISO32000-1:2008 PDF).Security settingsIn project directories, all users who have write access are to receive write permission in case ofnon-exclusive use by one user only. These rights have to be set up by an administrator.Note: The standard rights available in the operating system depend on the operating system in use.Tools used for the creation of partitions will implement their own security guidelines.Hibernation modeShifting to hibernation mode is generally permitted in STEP 7. However, hibernation must not betriggered if online connections are open or projects are being accessed by STEP 7 applications via anetwork.In such cases, online connections could be terminated unintentionally and open projects on networksmay experience data loss.For these reasons, the energy options for the operating system in the Windows Control Panel shouldbe set so that hibernation is not automatically triggered (by timer). Hibernation should not be triggeredmanually by the user in the cases mentioned above.3.2 Memory RequirementsSTEP 7 Professional requires, depending on the installation, between approx. 700 Mbytes and 1 GBof memory on your hard disk. The exact value depends on your operating system and on the filesystem used on your programming device/personal computer.MS Windows also requires additional free space on the hard disk (typically C:) for its swap file,depending on the memory configuration.You should keep at least double the amount of main memory free on your hard disk (example: with amain memory of 1024 MB you will need 2048 MB hard disk space for the page file following theinstallation of STEP 7).Depending on the size of the project, it may be necessary to have a larger swap file, for example,when copying an entire project (twice the size of the project on the hard drive in addition). If the freememory area for the swap file is too small, errors may occur (the program could possibly crash).Additional Windows applications which run parallel to STEP 7 Professional (such as Microsoft Word)also require additional hard disk space for the swap file.In order to ensure that the required memory for the swap file is really available, the minimum size forthe swap file should be set to the above value. This can be set in Windows in the taskbar underStart > Settings > Control Panel.You must make certain that you have enough free memory on the drive where the project data arelocated. If there is not enough memory on the drive, the project data may be destroyed during anoperation (for example, when compiling an STL source file into blocks). We also recommend that youdo not store the project data on the same drive as the Windows swap file.3.3 Compatibility with Other Software ProductsIf you are using other software products (for example, mail providers) on a programming device or PCwith STEP 7, observe the additional notes in Section 3.3 of the installation notes in this README file.You can find this file on the STEP 7 Professional DVD in the directory"D:\CD_1\Step7\Disk1\README.RTF", for example.3.4 Online DocumentationThe online help in STEP 7 Professional is split into two sections. You can find notes on the currentcontext in the same way as with the standard Windows help. The general section of the online help ofis based on the HTML format.4 Installation4.1 Installation of STEP 7 ProfessionalConversion of the DVD onto several CDsIf you require CDs instead of DVDs for the installation of STEP 7 Professional 2010, you cancopy the contents of folder CD_1 or folder CD_2 onto one CD. The installation is thenexecuted in the same way as the DVD installation with CD 1.STEP 7 Professional, Floating LicenseInsert the STEP 7 Professional DVD in the drive. STEP 7 Professional is installed via a user-led Setup,which you start with the MS Windows Explorer by double-clicking the SETUP.EXE program of theSTEP 7 Professional DVD.STEP 7 Professional Upgrade (Edition 01/2000, 08/2000, 08/2001, 12/2002, 2004,2006 > Professional 2010),Before you can upgrade STEP 7 Professional Edition 01/2000 to STEP 7 Professional 2010, youhave to transfer your old authorization to the corresponding authorization diskette using AuthorsWand change to the currently approved operating systems.If you have MS Windows XP SP1 installed, you can install over STEP 7 Professional Edition 12/2002.But you will first have to install SP2 or SP3 of Windows XP.STEP 7 Professional Powerpack (STEP 7 V3/V4/V5.0/V5.1/V5.2/V5.3/V5.4/V5.5 > STEP 7 Professional 2010)Before you can upgrade STEP 7 V3/V4/V5.0/V5.1 to STEP 7 Professional 2010, you will need to transfer your old authorization to the corresponding authorization diskette using AuthorsW and change to the currently approved operating systems.You can upgrade an existing installation of STEP 7 V5.2, V5.3, V5.4 and V5.5 to STEP 7 Professional 2010. You do not have to uninstall these STEP 7 versions and optional packages. However, you must uninstall older versions and their optional packages beforehand.In General the Following Applies:In order to obtain the optimum display of the information during the Setup, you should set the color scheme in the control panel of your programming device/personal computer to at least 65536 colors.Before starting the Setup program, close all applications (such as Microsoft Word, etc.) and the "Control Panel" window, since you will need to restart Windows following the installation of STEP 7 Professional so that all system variables can be entered completely.Insert the STEP 7 Professional DVD in the drive. In order to start installing STEP 7 Professional, double-click the SETUP.EXE program on the STEP 7 Professional DVD from the Windows Explorer. The Setup program will guide you through the installation.In the component selection box, select STEP 7, Automation License Manager, and any other components (S7-SCL, S7-GRAPH, S7-PLCSIM) that you wish to install.These components will then be installed and entries will be made in Microsoft Windows files.The following notes are intended to help you make the correct user entries required during the Setup program:∙The drive on which you install your STEP 7 Professional system can be selected freely. On some PCs/programming devices, you will not be able to select the drive via the selection list. In this case, simply enter the drive with its path in the appropriate input box (for example, "e:\Step7").Note that all STEP 7 optional packages must also be installed on this drive, so there must be sufficient space available. Avoid installing STEP 7 Professional on a SUBST drive.∙Before you use STEP 7 Professional, Windows must be restarted. Only then do all of the Microsoft Windows entries become active. If you do not restart Windows, STEP 7 Professional cannot run properly and data may be lost. If the installation procedure is aborted, you will also need to restart Windows.∙Refer to the tables in the S7KOMP_B.PDF file (the directory "Step7" following installation) for information on which versions of the optional packages can run with STEP 7 Professional under Windows. Contact your Siemens representative for more up-to-date information or go to our website at:http://www.ad.siemens.de/simatic-csNoteSTEP 7 Professional registers itself in Microsoft Windows system files. You cannotdelete, move or rename STEP 7 Professional files and folders using MicrosoftWindows utilities such as the Explorer or modify STEP 7 Professional data in theMicrosoft Windows registry. The program may no longer run properly after suchmodifications.4.2 License Key of STEP 7 ProfessionalBefore you can start working with STEP 7 Professional, you must transfer the license key from thelicense key diskette to the computer. There are two ways of doing this:∙While you are installing STEP 7 Professional, the Setup program displays a message, if there is no suitable license key installed on your computer. You can then decide whether you want thelicense key to be installed by the Setup program or whether you want to install the license keymanually at a later time using the Automation License Manager.∙If the license key cannot be installed during setup, continue the Setup program without installing the license key. Then boot the computer and install the license key using the taskbar in Start >Simatic > License Management > Automation License Manager.NoteAs of STEP 7 Professional Edition 2004, all program components will be activated via aLicense Key. This license key can be installed on all local drives. See also the enclosedproduct information on the Automation License Manager.The Automation License Manger prevents the authorizations/license keys frombeing installed on invalid drives or media such as RAM drives, diskettes orcompressed drives. If the drive in a device is reported as being a "removablemedium" and not, as usual, as a "hard drive", it will be treated as a CD, whichmeans that no license key may be installed on it.In the case of compressed drives, you can install the authorization on theassociated host drive.Read the notes on the Automation License Manager in the ALM-README.RTF fileon the STEP 7 Professional DVD under "CD_1Automation LicenseManager\setup\".Hidden files are stored in the folder "<Drive on which the license key is installed>:\AX NF ZZ".These files and the folder must not be deleted, moved, or copied. They contain data requiredfor the licensing of your software.If you do not adhere to these guidelines, the license key may be irretrievably lost.Notes on error-free use of the license keys∙The license key diskette or the license stick must not be read-only. Because the license key diskette is to be used without write protection, there is a danger that a virus could be transferredfrom the hard disk to the diskette or memory stick. You should therefore run a virus check on yourPC or programming device every time you install or remove a license key.∙If you use an optimizing program which enables you to move fixed blocks of memory, only use this option once you have moved the license key from the hard disk back to the license keydiskette or the license stick.∙With the License Key a specially marked cluster is shown on the target drive. Some check programs display this cluster as "defective". Do not try to restore it.∙Do not forget to transfer the license key to the license key diskette or the license stick before formatting, compressing, or restoring your hard disk or before installing a new operating system.∙If a backup copy of your hard disk contains copies of license keys, there is a danger that these copies may overwrite the valid installed license keys when you restore your backup data to thehard disk, thereby destroying the valid license keys. To prevent a valid license key from beingoverwritten by a backup copy, you must remove all license keys before you make a backup copyor exclude the license keys from the backup.Using the trial license:If no valid license key is installed for STEP 7 Professional, the Trial License Keys of the individualproducts which are always supplied with STEP 7 Professional can be installed. However, theseLicense Keys are only valid for 14 days.4.3 Uninstalling STEP 7 ProfessionalNoteSoftware products must be removed according to MS Windows.To do this, use MS Windows application "Software" (in the taskbar under ...> Settings >Control Panel > Software) to remove your software package (for example "STEP 7").As an alternative, you can use the setup program to uninstall a program.If you uninstall an older version of STEP 7 in order to install STEP 7 Professional, you must firstuninstall any existing optional packages for STEP 7 as well.5 Additional NotesYou will find further information on notes on installation and usage, as well as notes on the operatingsystem versions of the individual products, in the folders of the individual components on the DVDfolder CD_1 and in the 'Programs to be installed' Setup dialog when you select the program and viathe "Readme" button.5.1 Special Characteristics of the MS Windows 7 Operating SystemNote that MS Windows 7 offers an extended protection concept.This means that access to protected areas of the file system, such as the directories "Programs" and"Windows", are virtualized. Your data will be forwarded by the operating system in such a case touser-specific areas.Note that the software under MS Windows 7 is no longer available at "Start menu> SIMATIC", butunder "Start menu > Programs > Siemens Automation > SIMATIC" This change is caused by thecurrent architecture of MS Windows 7. Any information listed in the documentation and online helphas to be interpreted accordingly.Setting the access rights in the operating systemImportant changes have been made to the MS Windows 7 safety concept in STEP 7 V5.5. This concept is used in case of a new installation (STEP 7 has never been installed on this computer). In this case, most settings, such as the STEP 7 language and mnemonic method are user-defined. This means users can make settings using a PC and their login information. An exception is the setting of the configuration language for the PG/PC interface.A user group ”Siemens TIA Engineer” will be created under MS Windows 7. The installer will automatically be added to this user group. Users from this user group have additional rights, such as configuration of the PG/PC interface and installation of the hardware support packages as well as for global setting of the STEP 7 language and mnemonic for all users of the “Siemens TIA Engineer” group. This language setting does also apply for the configuration of the PG/PC interface.For manual IP configuration of the PGs (for PROFINET without DHCP), the user must also be added to the preinstalled user group “Network configuration operators".The administrator has to assign these user rights.Access rights in project directoriesSee "Security settings" in section 3.1 Operating environment / File system.Project files on network drivesIf several users work on the same project saved on a network drive at the same time, MS Windows 7 clients may not recognize changes made to blocks by other users. Possible remedies include a restart of STEP 7 on the MS Windows 7 client or deactivation of the opportunistic locking of the respective PG/PC. The latter influences the performance of the client. Given this background, we do not recommend that several users work on the same project simultaneously.User account controlSTEP 7 V5.5 under MS Windows 7 can be operated with enabled (3 levels possible) and disabled (never notify) user account control (UAC) mode.Following the conversion of the user account control (e.g. by UAC conversion of a program installed by the system administrator), some of the settings made by the user may no longer be present. The position and size of the application windows may, for example, be reset to older (default) values. Some of the projects processed by the user may no longer be visible. You will have to enter them once again in the project management of STEP 7 (SIMATIC Manager > Open Project > Find).Set up domain global user group "Siemens TIA Engineer"For operation in a domain, you can create a domain global user group that will be mapped to the local user groups "Siemens TIA Engineer" and "Network configuration operators".The following prerequisites will have to be met:∙The domain administrator has created a domain global user group.∙The domain administrator has added users to the domain global user group whose login will be used for access to STEP 7.Editing projectsYou need at least "Siemens TIA-Engineer" rights to reconfigure the PG/PC interface.These rights are also required for the following example:A project can include an implicit configuration of the PG/PC interface (PG/PC).If the PG/PC interface in such a project was implicitly reconfigured by a user with "SiemensTIA-Engineer" rights, then operators with user rights will not be able to undo this configuration. Thismeans you will not be able to work online again until an operator with Siemens TIA-Engineer" rightshas reconfigured the PG/PC interface. Otherwise operators will see the following alarm: "Insufficientuser rights for operation of STEP 7".N oteDo not use the hibernate / standby function under MS Windows 7.6 Terms of License and Disclaimer of Liability forOpen Source SoftwareBefore installation, please read the Readme_OSS.rtf file.。