Hardware manual

Change Log Impact Reference Guide
Datalogic Automation Inc. 4-104
How the Change Log Control Works
Only one Change Log control is allowed in a control panel application.Logging starts when the control panel
application enters run mode. Logging stops when the control panel application is closed or enters design
mode.
Log File Format
Log files are created in either XML format or password protected PDF format, depending on the property
"XML File Generation Enabled."
Log Entry Formatting
The log entries are formatted when they are written to the log file. In general, the entry is formatted based on
the entry’s data type and the system format settings. A single value is formatted as seen in the VPM proper-
Logging Level Any log event of this level or higher will be logged. If the value is zero, all
events will be logged.
Maximum Num-
ber of Files
When this number of files has been created, the event "Maximium Num-
ber of Files Written" event is activated. The next file created is numbered
at 001 and any existing log files with the same name are overwritten.
Maximum Num-
ber of Pages
When this number of pages have been written to the log file, a new file is
created.
XML File Genera-
tion Enabled
If True, the log files are generated in XML format instead of PDF format.
Method Name What it does
Insert Custom Text Writes the contents of the Custom Text property as a log entry.
Update File Writes the cached log entries to the log file.
Start New Log Increments the log file number and creates a new log file.
Event Name When it happens
File Update Com-
pleted
When the log entries have been written to the log file.
File Update Failed If the stored log entries do not get written to the log file.
Maximum Num-
ber of Files Writ-
ten
When the number of files indicated in the Maximum Number of Files
property has been created.
Error Logged When an error entry is written to the log file. The entry is available in the
Last Error Logged property.
Property Name What it is