flushdata

Remove all logged data records associated with dagroup object

Syntax

flushdata(GObj)


Description

flushdata(GObj) removes all records associated with the dagroup object GObj from the toolbox engine, and sets RecordsAvailable to 0 for that object.

GObj can be a scalar dagroup object, or a vector of dagroup objects.

Examples

Create a connected client and configure a group with two items:

da = opcda('localhost','Matrikon.OPC.Simulation');
connect(da);
grp = addgroup(da,'ClearEventLogEx');
itm1 = additem(grp,'Random.Real8');

Acquire 10 records using a logging task:

grp.UpdateRate = 0.5;
grp.RecordsToAcquire = 10;
start(grp);
wait(grp);

Examine the records available:

recordCount1 = grp.RecordsAvailable

Flush all data from the client:

flushdata(grp)
recordCount2 = grp.RecordsAvailable

Version History

Introduced before R2006a