Obtención mediante CFD del valor de la carga del viento

CAPÍTULO II. SIMULACIÓN NUMÉRICA DEL VINETO EXTREMO Y OBTENCIÓN DEL

2.2. Determinación de la carga del viento extremo en diversas variantes de la pendiente

2.2.2. Obtención mediante CFD del valor de la carga del viento

The main menu lists the options available:

These menu options are described in detail in the following paragraphs.

File

Several common file operations are available from this main menu option and are detailed in the following sections.

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This option opens the Welcome screen allowing a new project to be created. Select Manual Setup. This option also allows an existing project file to be opened via the Open Existing button.

Open

Opens the familiar Windows file open screen. Browse to locate the required file. Save and Save As

Opens the familiar Windows file open screen. Browse to locate the required folder.

Take note of the issues associated with opening and saving older versions of MiriMap2000+ project files with the newer versions of MiriMap2000+.

Upgrade

This is a utility to upgrade the AD2000 Series device firmware for releases of MiriMap2000+ versions prior to 2.10. These units cannot be upgraded directly from Version 3.00 due to significant differences in the versions. To proceed with this upgrade it is essential that Ver 1.07 of MiriMap2000 is used first to download the firmware file m2v02_03.bin to the AD2000 unit. Attempting to upgrade directly to version 3.00 will only result in communication timeouts whilst trying. Refer to the section on upgrading AD2000s for further details.

This option is only for older versions of the AD2000. Any AD2006 or AD2000 that has been programmed with Version 2.10 of MiriMap2000+ or later will be upgraded automatically when the firmware is different from the MiriMap2000+ application version.

Print Setup

This option opens the familiar Windows printer setup screen. Browse to locate the required printer. Print Reports

The configuration data used in MiriMap2000+ can be printed. Due to the large amount of data that can be printed, this menu option opens a screen to allow the various printed items to be defined.

If the default options are selected take note of the warning screen as shown in the following diagram:

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Instead, select a single station and then choose the specific reports required.

If Adobe Acrobat is installed, then printing to PDF allows previewing of the printed reports prior to printing to paper.

1, 2, 3 etc.

This option lists the last files opened and provides a shortcut to re-opening them. Exit

Selecting this will exit the MiriMap2000+ application and close the current project file, if it has not changed since the last save.

Edit

Several editing options are available for various elements of the project map and are detailed in the following paragraphs.

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For any supported edit functions (the option will be solid black, not greyed out), pressing Ctrl+Z will undo the previous ten actions.

Redo

For any supported edit functions (the option will be solid black, not greyed out), pressing Ctrl+Y will redo the previous ten undone actions.

Cut

For any supported edit functions (the option will be solid black, not greyed out), pressing Ctrl+X will delete the selected item.

Copy

For any supported edit functions (the option will be solid black, not greyed out), pressing Ctrl+C will copy the selected item.

Paste

For any supported edit functions (the option will be solid black, not greyed out), pressing Ctrl+V will paste the previously copied item.

Delete

For any supported edit functions (the option will be solid black, not greyed out), pressing Ctrl+Del will delete the selected item.

Export Ladder to Disk

In the Ladder Logic screens, after selecting one or more rungs of ladder logic, selecting this option will allow the logic structure and variables to be exported to a file. The file format for this exported ladder is .mml.

Import Ladder from Disk

In the Ladder Logic screens, previously exported rungs of ladder logic, saved in export file format .mml will allow the logic structure and variables to be imported to an open ladder logic page.

On import the variable assignments and descriptions from the imported file may differ from the currently opened ladder logic page. Three options exist as shown below:

Selecting Leave Current Variables will leave any variable defined in the current map

unchanged. Since the imported ladder may have had different nicknames and descriptions, this may result in confusing labels to proceed with caution.

Selecting Merge with station variables taking precedent will only add new variables and

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Selecting Merge with import variables taking precedent will only add new variables and will also overwrite variables that exist with the imported variables.

Example Ladder logic for the various function blocks can be imported quickly from the Examples folder. When doing this use the third import option, Merge with import variables taking

precedent. The variables used in these example ladder logic rungs are in the range above %MW50000. Please note that importing this ladder can overwrite existing memory variables in your project if your project already has variables defined in the range above %MW50000. The memory addressing of the imported logic should be adjusted to suit your application.

Import Variables

This applies to the selected station only. After selecting the Import Variables option a file open dialogue box will appear. Locate the desired file to import and select. The file is of the type .CSV (Comma Separated Variable). There are three options available on importing as shown below:

Selecting Delete all variables in station will erase all variables and overwrite with the

imported variables.

Selecting Merge with station variables taking precedent will only add new variables and

will not overwrite variables that exist with the imported variables.

Selecting Merge with import variables taking precedent will only add new variables and

will also overwrite variables that exist with the imported variables. Export Variables

This applies to the selected station only. Once selected, choosing the Export Variables option will open a Save As dialogue box to export the variable details for that station to a Comma Separated Variable (CSV) file. This form of file can be used with many editors and programs such as Excel to modify the variables individually. For instance, the variables may be re-named to more meaningful descriptions such as Pump KW, Dam Height etc. The modifications can be saved and added to the chosen station via the Import Variables edit menu option.

The warning message shown below will be displayed and the guidelines indicated should be adhered to strictly in order to avoid corrupting the map.

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It is best to export an existing variable list and modify it only rather than trying to create a new list from scratch. Appending to the variable list is the only way to add new variables. Do not insert new variables.

PLC Ladder logic

Selecting this option will open the Ladder logic page for the selected station. For further details see the chapter in this manual on Ladder Logic Functions.

Data-Logging

Selecting this option will open the Data-logging page for the selected station. For further details see the chapter in this manual on Data-logging Functions.

Scheduler

Selecting this option will open the Scheduler utility used in association with data-logging for the selected station. For further details see the chapter in this manual on the Scheduler utility.

Find Var

When within the Ladder Logic interface, selecting this option CTRL+F (i.e. press the Ctrl key and the F key at the same time) will open the Find dialogue box to locate Ladder logic variables

To search for bit variables only, check the Search Bits option. To search by nickname, check the Nicknames option, otherwise memory addressing will be used. If multiple Ladder logic pages are in use, check the Global Search option to search all defined pages.

Find Next

When within the Ladder Logic interface, if the variable is used in several places, pressing this option (or F3) will search through each instance of the variable in use in the Ladder logic after the initial search has been started.

Replace Var

When within the Ladder Logic interface the Ctrl+H keystroke combination (i.e. press the Ctrl key and the H key at the same time) allows the user to find and replace a variable that matches the criteria specified. The search criteria form for the Find & Replace is illustrated below:

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The variable to be found is selected from the Find What drop down box and the replacement variable is selected from the Replace With drop down box. The optional search parameters are available to search through all rungs or only between certain rung numbers. If the Replace All checkbox is ticked then all occurrences of the variable within the search parameters will be replaced. If the Replace All checkbox is not ticked then all occurrences of the variable within the search parameters will be replaced one by one with a user confirmation being displayed each time. The choice to search for variables by nickname or physical memory location is available. To use nicknames, ensure that the nicknames checkbox is ticked.

Select the Bit only option to restrict the search to bit variables.

Project

Several project-wide options can be set as detailed in the following paragraphs.

New

This option will open the Main Menu Welcome screen to allow a new project to be created via the select the Manual Setup button. An existing project can also be opened via the Open Existing button. In MiriMap2000+, an entire project is saved in a single project file, there are no other files created and thus this file should be saved carefully.

Com Setup

This menu option will open the Communication Properties menu.

Using the Comms Port Wizard will simplify the connection processes described in the following paragraphs.

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Serial Port - Com Port

This is the COM port number assigned by Windows and can be any number from 1-255. Typically on-board RS232 ports start at COM1, COM2 is also reserved for the same then other devices such as USB to RS232 converters will be assigned from COM3 onwards. Be sure to verify the port selected is the correct one to be used by MiriMap2000+ and is not being used by other applications. Verification is made via Windows Control Panel - System - Hardware - Device

Manager under the folder Ports (Com & LPT).

Open Control Panel and find the System icon.

This opens the System Properties screen. Select the Hardware tab and press Device Manager button:

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Serial Port - Modem Type

By default this is set to No Modem and is used for the majority of serial connections, e.g. RS232 and USB 2.0. MiriMap2000+ can connect to remote AD2000 Series devices using a variety of modems (e.g. Dialup, GSM and GPRS). Choose the correct modem from the Modem Type list.

MiriMap2000+ does not use any of the Windows modems settings to make a link to the modem types supported in the Modem Type list. Do not attempt to use Control Panel -

Phone and Modems Options.

Once a modem has been selected and used, on returning to use RS232 connections the No Modem type must be re-selected.

Serial Port – Baud Rate, Parity, Stop, Data Bits and Flow Control

Always use the following settings.

38400, None,1 Stop bit, 8 Data Bits, Hardware (RTS/CTS).

Modem Timeout

This is an inactivity timeout period. If no data communications occurs in this period MiriMap2000+ will disconnect the link. A default period of 30 seconds is used to allow users to change between different online functions (e.g. Watcher, Data-log read) before disconnection occurs.

Modem Connect Time

This is the time period MiriMap2000+ waits to get a CONNECT with the remote device. The default setting is 60 seconds. Once this expires a retry is attempted up to the maximum of times set in the

Retries field.

Port Timeout

This is the time period MiriMap2000+ waits once connected, for a response to a command sent to the remote device. The default period is 10 seconds.

Retries

The number of retries attempted after timeout occurs.

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Enter a meaningful name for the project or accept the default name.

The project properties dialogue box allows entry of any text in this area to describe the project or to use as a scratchpad for revision notes. The data entry screen will scroll down as the text fills. The project version number will increment every time the project files is saved. This will wrap around at 99. The number can be reset manually if this auto-increment is not required. Simply highlight the number and type the required number in.

For data-logging systems, the folder that is used to store the log files is typically stored in a folder with the same name as the project file. This means if the filename is changed the data-log files are stored into a new folder of the same name as the filename. To fix this folder to a single data-log storage folder check the Use Fixed Log Directory and define the folder as required.

Options

This option screen is used to allow various parameters to be used within the project.

Automatically Clean Ladder Logic On Compile

This will tidy up any missing ladder logic columns or lines when the project is compiled. Default is ON.

Auto - Archive datalog data

The auto archive entry is used to specify the number of entries in the log file, before it archives the data.

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For example, if 15,000 items are read from the logger, and this parameter has been set to 10,000, then it will archive the first 10,000 entries into an archive file and the current data-log file will have 5000 entries in it. By clicking the Load Archive button in the All Data-log screen, you can load previously archived logs. See the chapter on data-logging functions for detailed information. Default is 10000.

Ignore Driver version in Download

Setting this option ON will give the option not to process the automatic firmware verification. This should only be used in extreme conditions if requested by Miri Technologies support. Default is OFF.

Select to continue, no to abort. Continuing means there is no check for firmware differences and following warning prompts for a choice of which files to send. Yes will send the firmware files anyway (but not check for differences), No sends only the configuration changes to Ladder Logic and other device parameters.

Prompt Stop Polling (Off is no Stop Poll)

As of Version 3.00 for MiriMap2000+ there is no prompt displayed to stop polling when accessing a remote via the network, as required in previous versions. There is a new mechanism in Version 3.00 that interposes online monitoring (i.e. Watcher and Ladder Logic monitoring) packets with polled parcels. In fast data network links this will work with minimal effect on the system polling parcels. However, on slower 2400 baud systems this may slow down the network polling. This is especially significant when doing remote firmware updates or reading lots of data-log data. It may be desirable to stop polling and setting the ON will allow the prompt to appear to allow user choice. Default is OFF.

Display Com Port Wizard

As of Version 3.00 for MiriMap2000+ there is no need to determine the COM port settings that have been assigned to USB2.0 RS232 converters and which IP address to connect through when using Ethernet. Ensuring that this Wizard option is selected will prompt the user to choose the various ports that are available from a pop-up menu. Default is ON.

On accessing any communications functions a screen will appear similar to the ones shown below. Select the correct communications port prior to connecting to the AD2000 Series device.

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The COM port must be installed and defined under Windows prior to opening the wizard for it to be listed. See the section in the Project - Com Setup menu option for Serial Port - Com Port

setup details within Windows.

For IP addressed devices the Wizard will list the IP address of the currently selected station with a history list of previously selected stations.

If these numbers do not match the required setting, they can be manually updated and will be available next time.

Prior to pressing the OK button, verify that the IP address and port number is correct for the remote device otherwise timeouts will occur.

Retain the checked Display Next Time option to allow the Com Port Wizard to operate on the next connection. If the check is removed, the Com Port Wizard can be re-enabled by selecting the

Project - Options - Display Com Port Wizard option.

Wrap Ladder logic

Check this option to ensure the ladder Logic screens are displayed with a fixed width for ease of viewing. Long ladder rungs will auto-wrap with the symbol below:

Maximum Number of Backups

Every time the project file is saved, a backup copy of the previously saved version of the project file is made with the same name and the subscript _BAKXX. The number XX will increment by one to the maximum value entered in this field.

Device Installer Dir

The XPort Ethernet device on the AD2006 uses a Device Installer to enable configuration and firmware upgrading. This lists the folder the software utility is installed in. See the section on

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Password

The MiriMap200+ project can be password protected to limit usage.

The passwords are case sensitive and must be recorded in a safe place.

The passwords are only set when the file is saved. To change them, Full Access must be available, after which, the passwords can be deleted or adjusted. If the passwords are lost the project file must be sent to Miri Support [email protected] for recovery.

Full Access - Only allows read/write access to fully adjust the project.

Read Var Access - Only allows the user to open the MiriMap2000+ file and to go online to view

real-time Watcher charts and Ladder Logic and to upload data-log records. Changes can be made but cannot be compiled or saved.

View Only Access - Only allows the user to open the MiriMap2000+ file but there is no access to

online facilities to view real-time Watcher charts and Ladder Logic or to upload data-log records. Changes can be made but cannot be compiled or saved.

Display

Several display options can be set as detailed in the following paragraphs.

View - Status Bar

The status bar located on the bottom section of the main MiriMap2000+ screen can be toggled on

In document MÉTODO NUMÉRICO PARA DETERMINAR EL ÁNGULO ADECUADO EN ESTRUCTURAS CON CUBIERTAS LIGERAS (página 47-56)