// Generates an alarm tag name
private string GetTagName(DataModels.Alarm item)
{
string measurementLabel;
StringBuilder description = new StringBuilder("AL-");
AlarmSeverity severity = item.Severity.GetEnumValueOrDefault <AlarmSeverity>(AlarmSeverity.None);
AlarmOperation operation = item.Operation.GetEnumValueOrDefault <AlarmOperation>(AlarmOperation.Equal);
switch (severity)
{
case AlarmSeverity.None:
description.Append("EXEMPT");
break;
case AlarmSeverity.Unreasonable:
switch (operation)
{
case AlarmOperation.GreaterThan:
case AlarmOperation.GreaterOrEqual:
description.Append("HIGH");
break;
case AlarmOperation.LessThan:
case AlarmOperation.LessOrEqual:
description.Append("LOW");
break;
default:
description.Append(severity.GetDescription());
break;
}
break;
default:
description.Append(severity.GetDescription());
break;
}
description.Append(':');
if (m_measurementLabels.TryGetValue(item.SignalID, out measurementLabel))
{
description.Append(measurementLabel);
}
return(description.ToString());
}
/// <summary>
/// Creates a new instance of the <see cref="Alarm"/> class.
/// </summary>
/// <param name="operation">The operation to be performed when testing values from the incoming signal.</param>
public Alarm(AlarmOperation operation)
{
Operation = operation;
}
/// <summary>
/// Creates a new instance of the <see cref="Alarm"/> class.
/// </summary>
/// <param name="operation">The operation to be performed when testing values from the incoming signal.</param>
public Alarm(AlarmOperation operation)
{
Operation = operation;
}
/// <summary>
/// Gets an operation description for an alarm.
/// </summary>
/// <param name="alarm">Alarm to derive description for.</param>
/// <param name="tagName">Label of associated measurement.</param>
/// <returns>Derived label.</returns>
public static string GetOperationDescription(Alarm alarm, string tagName)
{
StringBuilder description;
description = new StringBuilder(tagName);
AlarmOperation operation = alarm.Operation.GetEnumValueOrDefault <AlarmOperation>(AlarmOperation.Equal);
switch (operation)
{
case AlarmOperation.Equal:
description.Append(" = ");
break;
case AlarmOperation.NotEqual:
description.Append(" != ");
break;
case AlarmOperation.GreaterOrEqual:
description.Append(" >= ");
break;
case AlarmOperation.LessOrEqual:
description.Append(" <= ");
break;
case AlarmOperation.GreaterThan:
description.Append(" > ");
break;
case AlarmOperation.LessThan:
description.Append(" < ");
break;
case AlarmOperation.Flatline:
if ((object)alarm.Delay == null)
{
return(string.Empty);
}
description.Append(" flat-lined for ");
description.Append(alarm.Delay);
description.Append(" seconds");
return(description.ToString());
default:
description.Append(operation.GetDescription());
break;
}
if (alarm.SetPoint.HasValue)
{
description.Append(alarm.SetPoint);
}
else
{
description.Append("undefined");
}
return(description.ToString());
}
