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WinCC Flex 2008 Proper Execution of ArchiveLogFile Function

Created by: horsman at: 3/27/2012 2:01 AM (1 Replies)

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3/27/2012 2:01 AM	Rate (1)
horsman Posts: 27 Rating: (1)	Hi, I have some questions about the proper execution of commands to archive a data log using the ArchiveLogFile system function. 1)In the Help for the ArchiveLogFile functionan exampleshows a Function List of CloseAllLogs, ArchiveLogFile, OpenAllLogs. However, the CloseAllLogs function says that a log must be stopped before it is closed. Are there any implications if you do not stop a log before closing it to archive? 2) Do the CloseAllLogs,ArchiveLogFile, and OpenAllLogsfunctions execute synchronouslyorasynchronously? The manual states that system functions with longer runtimes operate asychronously.If I haveArchiveLogFile in a Function List followed by OpenAllLogs will the system wait until the ArchiveLogFile function is complete before trying to OpenAllLogs. Also, ifthe ArchiveLogFile function is preceededby the CloseAllLogs function in a Function List, willthe system wait until the logs are closed before trying to Archive? 3) Are the functions above executed any differently with the Scheduler than with an Event? Thanks
horsman Posts: 27 Rating: (1)
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3/27/2012 3:20 PM	Rate (2)
Tweety Posts: 3037 Rating: (192)	horsman Hi, I have some questions about the proper execution of commands to archive a data log using the ArchiveLogFile system function. 1)In the Help for the ArchiveLogFile functionan exampleshows a Function List of CloseAllLogs, ArchiveLogFile, OpenAllLogs. However, the CloseAllLogs function says that a log must be stopped before it is closed. Are there any implications if you do not stop a log before closing it to archive? You should stop the archiving with the function "StopLogging" and then you should use the function "CloseAllLogs". horsman 2) Do the CloseAllLogs,ArchiveLogFile, and OpenAllLogsfunctions execute synchronouslyorasynchronously? The manual states that system functions with longer runtimes operate asychronously.If I haveArchiveLogFile in a Function List followed by OpenAllLogs will the system wait until the ArchiveLogFile function is complete before trying to OpenAllLogs. Also, ifthe ArchiveLogFile function is preceededby the CloseAllLogs function in a Function List, willthe system wait until the logs are closed before trying to Archive? You can create a button with these functions CloseAllLogs,ArchiveLogFile, and OpenAllLogsunder the event click. The functions wait for each other until the previous function is ended. horsman 3) Are the functions above executed any differently with the Scheduler than with an Event? Thanks There are no difference whether you use an event on a button or you use an event of the scheduler. How are tags and alarms logged in WinCC flexible? How do you do long-term archiving with WinCC flexible? Tweety
Tweety Posts: 3037 Rating: (192)
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