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T12017-Sentry_LANServer_Users_Manual Page 32 of 59
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldserver.com
Tel: (408) 262-2299 Fax: (408) 262-2269 Toll_Free: 888-509-1970 email: support@fieldserver.com
• Auto Install Failed: Normally the Web Project is designed so that the control will
install itself the first time that it is viewed. It is possible that process failed.
Perform the following actions to retry.
• (For I.E. 6.0) Menu|Tools|Internet Options|General Tab|Temporary
Internet Files, Delete Files, Check Delete all files, OK. Now refresh the page
using the Ctrl-F5 Key.
• Auto Install Not Performed: Some Web Projects are designed so that a special
web page must be visited to perform the install. Browse the project looking for
instructions on how to do this.
• Manual Install not performed: Some projects are designed, so that the ActiveX
Controls must be installed manually. Typically an application (exe) file is supplied
to authorized users.
5.12. Backing Up the Sentry Calibration Data
5.12.1. Calibration Backup Control
This control does not operate on Windows CE systems.
5.12.1.1. Description
The ActiveX Control is designed to backup and restore the calibration data from a
Sentry. The utility is normally used when a firmware EEPROM in the Sentry is
updated. Prior to the update, the user backs up the calibration information. The user
then replaces the EEPROM, does a ‘Clear All’ using the menu system on the Sentry
front panel and then after resetting the Sentry and waiting for the warm-up to
complete, the utility is used to restore the calibration information.
While the utility can be used for the above purpose it has a more generic capability –
It is capable of backing up and restoring the holding register memory (40000’s) of
any Modbus RTU capable device connected to a LANServer.
Using the control is simple. Click a button. EXERCISE EXTREME CAUTION before
pushing the download button. Sending calibration data to the Sentry may change the
way Sentry operates. It is important to download the correct data to the correct
Sentry.
If there are any errors they are reported on a dialog box.
5.12.1.2. How the Control Operates
• The control logs its activity to the following file: C:\Program
Files\FST_SentryBK\index.txt. This file can be opened with Notepad or Word.
• The Control uses the log file to determine which registers to backup. It connects
to the LANServer and uses it as a conduit to read the register memory of the
Sentry. The memory is read in chunks - as each chunk is read, a line is
appended to the following file.
• C:\Program Files\FST_SentryBK\backup_n.csv - where n is equal to the node
number it has just backed up.
• At the end of the process the file is closed and saved. Previous versions of the
file are overwritten. The file is comma separated and can be opened with Excel.