private void AlarmSummary_Shown(object sender, EventArgs e)
        {
            // get the Alarm summary
            // Addentum 135-2012av-1 : Deprecate Execution of GetAlarmSummary, GetEVentInformation instead
            // -> parameter 2 in the method call
            bool Ret;

            Ret = comm.GetAlarmSummaryOrEventRequest(adr, true, ref Alarms); // try GetEVentInformation

            if (!Ret)
            {
                Ret = comm.GetAlarmSummaryOrEventRequest(adr, false, ref Alarms); // try GetAlarmSummary
            }
            if (Ret)
            {
                LblInfo.Visible = false;
                FillTreeNode();
                AckText.Enabled = AckBt.Enabled = true;
            }
            else
            {
                LblInfo.Text = "Service not available on this device";
            }

            Application.UseWaitCursor = false;
            Cursor.Current            = Cursors.Default; // sometimes required, else not back since a click !
        }