User manual

IEC61131 User and Reference Manual
April 22, 2008
249
Log File Names
Log file names are created using the Log file name entry in the DLGF Element
Configuration dialog. When the files are saved to the internal drive or the mass storage
device additional information is added to the file name. Data logs files are named according
to the convention:
Annnnnn_logfile_YYYYMMDD_HHMMSS.nlg
Where:
 Annnnnn is the controller ID
 logfile is the path qualified log file name as created in the DLGF Element
Configuration..
 YYYY is the 4 digit year the file was created
 MM is the 2 digit month the file was created
 DD is the 2 digit day of the month the file was created
 HH is the 2 digit hour (24 hour clock) the file was created
 MM is the 2 digit minute the file was created
 SS is the 2 digit second the file was created
Note that the file name is path qualified to permit similar data log names on the same
controller. i.e. directory1\log and directory2\log are both unique permitted names. The drive
is excluded from the file name.
Security Token
The security token is a 32 bit value containing 8 hex characters. This token provides for a
method of authenticating the mass storage device as a trusted and authorized device. This
method of authentication does meet the criteria for 2 factor security because it requires
something you know (the security token), and something you have (physical access).
 If a data log is configured to have a security token value of 0 then the security is
disabled on this log.
Security tokens are stored in an XML script file. The tokens are ASCII representations of a
32-bit value, i.e. if the security token value was 0x00579ACE then it would be represented
as 00579ACE in the token file.
The file must be named controller.xml and reside in the root directory of the mass storage
device.
Security Token File Format
<controller>
<securityTokens>
<allControllers>
<token>token1</token>
<token>token2</token>
…
<token>tokenN</token>
</allControllers>