User guide

eWON 500-2001-4001-4002 User Guide - Appendix
eWON 500®2001®4001®4002® Version 4_3_0 - User Guide - 10/5/05 - ©ACT'L sa - Page 225
13 Appendix
13.1 Access to the eWON Technical Support
An eWON technical support is provided on our Web site (http://www.ewon.biz/). Just fill in the support request sheet (/Support/Support request),
or send your problem description to [e-mail]
. Our support team will provide you with technical information
to help you solving any issue you could encounter to configure your eWON (even if we think that this User Manual answers the more exhaustively
as possible to such questions), or to integrate it or collecting information on your industrial networks.
13.2 eWON configuration and files storage
This chapter explains how data storage is organized in the eWON.
13.2.1 Flash file system
The eWON uses a robust flash file system that uses a 1Mbyte flash area.
The following files are saved in this flash file system:
Important:
“C” file type means the file is a circular file. This kind of file has 2 sizes, the standard size and the maximum size.
When maximum size is reached, the oldest 64K of data are erased and new data starts to be written.
This means that the actual size of data that has to be considered for a circular file is the standard size,
because maximum size is not permanent.
Formatting the Flash file system means erasing all the data in these files.
13.2.2 Non-volatile configuration
There are 2 additional blocks of flash memory used for:
• Non-volatile COM configuration: this block contains the "System COM" setup.
• Retentive values. This file is also erased when the flash file system is formatted.
File Type Max Size Description
Configuration
(Except COM
configuration)
128K
Configuration file:
• System setup
• Pages setup
• IO Servers setup
• Tags setup
• Users setup
Note: The content of the COM setup page is not saved here
Program 128K Script program
/usr directory
1 to 3
MByte
Content of the whole /usr directory and its subdirectories
The size of the /usr directory can be defined by the user since version 4
Event file C 128K Event file
Alarm History C 128K
Alarm history file
Max number of alarm history: 8192
Historical logging C
16384,
73728 or
139264
points
Historical logging file
Table 152: Flash file system - files type and size