onError - event of the PmgTrendViewer object

The event is triggered if error occured in the viewer. For example, the received data are inconsistent.
pMe(Object) Reference to the PmgTrendViewer object where the event rises.
pEvent(Object) Reference to object describing detailed information about the specific event.
pEvent.Code - (Long) Numerical error code. See LastErr property.
pEvent.Text - (String) Error text description. See LastErrText property.
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Pm.Debug("Trend error: " + pEvent.Text);
PROMOTIC 9.0.17 SCADA system documentation - MICROSYS, spol. s r.o.

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