![background image](http://html1.mh-extra.com/html/omron/cx-supervisor-v2-0/cx-supervisor-v2-0_user-manual_744213205.webp)
CHAPTER 11 – Data Logging
OMRON
Page 182
Release 2.0
If a session is halted and Data Set Items changed, deleted or new ones added it is not valid to
continue using the existing file. When the session is restarted and Data Set file opened CX-
Supervisor checks to see if there are any differences between the current Data Set and the Data Set
stored in the file. If any differences are detected the System will mark the existing file as invalid by
altering the Timestamp brackets from “[ ]” to “{{ }}” and create a new file.
For example, if a file
Batch1[2000032922].dlv
is detected as being invalid it will be
renamed
Batch1{{2000032922}}.dlv.
A new
Batch1[2000032922].dlv
file will
then be created to log the new data.
If the file
Batch1{{2000032922}}.dlv
already exists then the current invalid file will be
renamed
Batch1{{2000032922}}_1.dlv
and so on.
This is most likely to occur during the development of an application when Data items are
continually being amended and tested.
Invalid files are not part of the Data Set files and can not be purged or found by the File Management
‘next’ or ‘previous’ searches. The data recorded in these files is not lost and can be viewed using the
Data Log Viewer and exported from them using Export Log. Invalid files can only be deleted using
Windows explorer.
Data Set Period Examples
The following examples show how the specified period (Hour(s), Day(s), Month(s)) is implemented
while the System is running:
1) Data Set period = Hours
If a Data Set named CV500 starts logging at 12:30 on the 7th March 1999 with a period of 6 hours,
the following files will be created:
CV500[1999030712].dlv
If the s7stem is left running the Data Logging directory will contain the following files:
CV500[1999030712].dlv
CV500[1999030718].dlv
CV500[1999030800].dlv
CV500[1999030806].dlv
....
....
The first file will only contain 5.5 hours of Data because the minimum resolution is one hour and the
file was created on the half-hour, all subsequent files will contain the full six hours of data.
2) Data Set period = Days
If a Data Set named Batch1 starts logging at 23:00 on the 29
th
December 1999 with a period of 1 Day,
the following files will be created:
Summary of Contents for CX-SUPERVISOR - V2.0
Page 2: ...CX Supervisor User Manual Software Release 2 0...
Page 3: ......
Page 5: ...CX Supervisor User Manual OMRON Page ii Revision 2 0...
Page 7: ...CX Supervisor User Manual OMRON Page iv Revision 2 0...
Page 11: ...CX Supervisor User Manual OMRON Page viii Revision 2 0...
Page 13: ...CX Supervisor User Manual OMRON Page x Revision 2 0...
Page 15: ...CX Supervisor User Manual OMRON Page xii Revision 2 0...
Page 17: ...CX Supervisor User Manual OMRON Page xiv Revision 2 0...
Page 19: ...CX Supervisor User Manual OMRON Page xvi Revision 2 0...
Page 21: ...CX Supervisor User Manual OMRON Page xviii Revision 2 0...
Page 23: ......
Page 67: ......
Page 97: ......
Page 137: ...CHAPTER 7 Graphics Library OMRON Page 114 Release 2 0...
Page 183: ...CHAPTER 9 Animation OMRON Page 160 Release 2 0...
Page 215: ......
Page 263: ......
Page 269: ......
Page 274: ...OMRON CHAPTER 16 Connecting to Omron Industrial Components Release 2 0 Page 251...
Page 275: ......
Page 285: ......
Page 319: ......
Page 331: ......
Page 351: ......
Page 359: ...GLOSSARY OF TERMS CX Supervisor User Manual OMRON Page 336 Release 2 0...