好东东，大家一起来分享。

What's New in STEP 7, Version 5.3?

The following subject areas have been updated:
Installation
• STEP 7 is released for MS Windows 2000 Professional and
MS Windows XP Professional.
• As of STEP 7 V5.3 there is a new licensing procedure. User rights are no longer issued by means of authorizations but now by means of license keys.
License Keys are managed in the Automation License Manager (see User
Rights through the Automation License Manager). The "AuthorsW" program is no longer used.

Printing
The paper size and page layout (headers and footers) in all applications can now
be specified with the File (or the corresponding menu item in the specific
application) > Page Setup. This no longer has to be done centrally in the SIMATIC Manager.

SIMATIC Manager
• The "Compare Blocks" dialog box how has the option "Compare Details". To select the path for comparing blocks, click the "Select" button.
• Data that you have saved to an MMC or Memory Card are displayed in the "Files on MMC" folder, which is located below the block folder.
• There are new symbols for libraries. All user-created F-libraries, which only run on F-systems, are now supported. To create F- Libraries, select the File > New > Libraries menu command. In the "New Project" dialog box that is displayed,
select the "F-library" check box.
• The menu command PLC > Diagnostics/Setting > Node Flashing Test lets
you identify the node directly connected to the programming device (PG)/PC by means of the flashing FORCE LED (see Establishing an Online Connection via the "Accessible Nodes" Windowand Diagnosing Ethernet (PROFInet)).

Programming LAD/STL/FBD Blocks
• The "Call Environment of the Block" dialog box now allows you to manually enter call paths that were previously not detected by means of the crossreference function in the reference data display.
• If the program editor show the current block status, you can now display the current status values in the LAD and FBD languages in decimal, hexadecimal or floating-point format.
• In the dialog box displayed after selecting the Options > Customize you can go to the "General" tab and specify whether the program status change for blocks should take place automatically whenever the maximum number of blocks that can be monitored has been reached (see Establishing an Online Connection via the "Accessible Nodes" Window).

Symbol Table
• Within a symbol table, you can now select and edit contiguous areas. This means that you can copy and/or cut parts of one symbol table and insert them into another symbol table or delete them as required.

Configuring and Diagnosing Hardware
• The previous "H" optional package "S7-400H Fault-Tolerant Systems" is no longer supplied as a separate optional package; instead, it is now integrated in STEP 7 V5.3. To open the related electronic manual "S7-400H Fault-Tolerant Systems", go to the task bar and select Start > SIMATIC > Documentation.
The block library "Redundant IO" contains blocks for supporting redundant I/O devices.
• You can now search for components or any text strings desired in the Hardware Catalog (see Searching in the Hardware Katalog).
• You can now search for information (product support, FAQs) on modules and components directly via an Internet address. Provided information on the module is available, you will be taken to a page that contains a selection of information. To do this, select the required module from the Hardware Catalog or in the module rack, right-click to open the context-sensitive menu listing the
information options available (see Displaying Information on Components in the Hardware Catalog).
• New modules with new functions are now supported:
You can assign parameters to the new "Option Handling" function for ET 200S (see ET 200S with Option Handling).
You can issue a location ID for CPU 41x-xxx40.

Configuring Networks and Connections
• NCM S7 Industrial Ethernet and NCM S7 PROFIBUS, the configuration tools for S7 CPs, are longer separate software packages, but are now automatically installed with STEP 7 V5.3.
• The network view can now be switched over to a view with reduced subnet lengths. This provides a clearer overview of project, especially those with numerous stations (see Creating and Assigning Parameters to a Network Connection and Tips on Editing a Network Configuration).
• The CPU 317-2 PN/DP supports S7 communication as a client via its
integrated PROFInet interface. You will find the communication blocks in the standard library (Communication Blocks, CPU 300, see Blocks for Different Connection Types).
• Errors and warnings are now displayed in a newly designed output window for consistency testing. This window is clearly structured in columns and has menu commands for locating the error position, to display the help on the specific message and for printing.
• Connections (including interproject connections) can be downloaded to stations from a central point with the function "Compile and Download Objects".
If the object used as a starting point is a multiproject, then all stations involved in a connection are automatically loaded, regardless of which project the station is located in (see Compiling and Downloading Objects).

Standard Libraries
• The standard library "System Function Blocks" has been expanded with the blocks SFC85 for creating retentive or non-retentive data blocks as well as SFC112, SFC 113 and SFC 114 for use in PROFInet communication.
• The standard library "Communication Blocks" has been expanded with the blocks for S7 communication for CPU 317-2 PN/DP (CPU_300).
• The symbols used for libraries are new. You can now identify which libraries are user-created F-libraries, which can only be run on F-systems.

Process Diagnostics
• The new Process Diagnostics > Import Templates menu command lets you import templates for process monitoring in S7-PDIAG.
Managing Multilingual Texts
• With STEP 7 V5.3, in addition to CSV format you can now use XLS format as an export format.