private AFValues filterValues(AFValues baseReturnVals)
{
AFValues filteredReturnVals = new AFValues();
if (ConfigString.Split(';')[2] == "convertRadio")
{
filteredReturnVals = baseReturnVals;
}
else //formatRadio
{
//filter out values where the next value is within 1 second
//this eliminates the problem where the date and time PLC addresses change at slightly different times within 1 second
//e.g. the date changes to 10/10 right before the time changes to 11:15 from 12:00, then you have an extra filldate of 10/10 12:00 am that is not valid
for (int i = 0; i < baseReturnVals.Count - 1; i++)
{
if ((baseReturnVals[i + 1].Timestamp - baseReturnVals[i].Timestamp) > new TimeSpan(0, 0, 1))
{
filteredReturnVals.Add(baseReturnVals[i]);
}
}
//always add the last value since there is nothing to compare it to
filteredReturnVals.Add(baseReturnVals[baseReturnVals.Count - 1]);
}
return(filteredReturnVals);
}
//calculate value of attribute
public override AFValue GetValue(object context, object timeContext, AFAttributeList inputAttributes, AFValues inputValues)
{
string[] splitConfig = ConfigString.Split(';');
string selectedOption = splitConfig[2];
if (selectedOption == "convertRadio")
{
return(PLCTimeConvert(inputValues[0], splitConfig[0]));
}
else //selectedOption == "formatRadio"
{
AFValue dateVal = inputValues[0];
AFValue timeVal = inputValues[1];
return(PLCTimeFormatExecution(dateVal, timeVal));
}
}
//bring in PIPoint attributes
public override AFAttributeList GetInputs(object context)
{
AFAttributeList returnList = new AFAttributeList();
string[] splitConfig = ConfigString.Split(';');
string selectedOption = splitConfig[2];
if (selectedOption == "convertRadio")
{
//config string is "initial date;name of attribute"
AFAttribute minSinceAttributeObj = GetAttribute(splitConfig[1]);
returnList.Add(minSinceAttributeObj);
}
else //selectedOption == "formatRadio"
{
//config string is "name of date attribute;name of time attribute"
AFAttribute dateAttributeObj = GetAttribute(splitConfig[0]);
AFAttribute timeAttributeObj = GetAttribute(splitConfig[1]);
returnList.Add(dateAttributeObj);
returnList.Add(timeAttributeObj);
}
return(returnList);
}