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Users implement this interface if they are interested in changes to monitored IO values
Method Summary | |
void |
onValueChanged(IOItem e)
Called when a data value has changed. |
Method Detail |
public void onValueChanged(IOItem e)
IOItem.isOldQualityGood()
returns false the value returned by
IOItem.getOldValue()
is not reliable.
e
- The item for which the monitored value changed. Query the IOItem
in order to obtain information about the value. Use
IOItem.getOldValue()
to obtain the value for the item. Use
IOItem.isOldQualityGood()
or IOItem.getOldQuality()
to
obtain the quality of the item
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