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WinCC -- Configuring and programming communication -- Communication to S7, use of fast AR_SEND

	How can you use process-driven archiving in WinCC for a process tag with SFB37 (AR_SEND)?
	How do you use SFB37 (AR_SEND) for process-driven archiving of process values in WinCC Tag Logging archives?
	How can you achieve archiving cycles of less than 500ms in WinCC Tag Logging?
	How can you tell that WinCC has received data from AR_SEND (SFB37)?
	Where is the data archived that is transferred by AR_SEND (SFB37) to WinCC?
	How can you ensure that the variables in AR_SEND (SFB37) have the same time stamp?

WinCC -- Configuring Tag Logging -- Archiving Tag Logging

	How can you save a process value in WinCC every 1.5 hours, starting at midnight?
	What is the effect of the hysteresis when a process value is archived with the "Archive only upon change" setting, depending on whether it is specified in absolute or percentage terms?
	How can you archive a process tag only at specific points in time (acyclic)?
	How are process values archived in the database when using "upon change"-type acquisition?
	How can you have a process value archived only when it changes?
	What is the significance of the acquisition type of an archive variable in WinCC tag logging?
	How do you archive individual bits from a word in WinCC?
	How can you define which archive tags are stored in Tag Logging Fast and which in Tag Logging Slow?
	How do you activate archiving via an action?
	Where is the data archived that is transferred by AR_SEND (SFB37) to WinCC?
	How is the mean value for process variables stored in the process value archive?

Where is the data archived that is transferred by AR_SEND (SFB37) to WinCC?

Part number:

Instructions
Process values transferred via the AR_SEND are stored by default in the WinCC archive "TagLogging Fast".

For WinCC V6.0
For WinCC V6.2 onwards

For WinCC V6.0
In WinCC V6.0 it is not possible to parameterize the storage location for this data.

For WinCC V6.2 onwards
In WinCC V6.2 you can choose whether the process values are to be stored in the "TagLogging Fast" or "TagLogging Slow" archive.

For this you open the "Tag Logging" editor and then the properties of the "TagLogging Fast" archive. Select the "Archive contents" tab.

Fig. 01

To archive process values in the "TagLogging Fast" archive, you now select the "Process-controlled measured values" check box. If the check box is not selected, the process values are archived in the "TagLogging Slow" archive.

More information is available in the WinCC Information System (WinCC Online Help) under the keyword "Storing Process Values".

Entry ID:21738144

Date:2010-04-19

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