question

You could use a loop to count each type in the processtime trigger:

int numType1=0;    //we'll increment this
for (int n=item.subnodes.length;n>0;n--)    //loop for all the items.
    numType1+=item.subnodes[n].Type==1;    //increment by  true (1) or false(0)
return numType1*3;    //assume model time units are second; 

A more flexible and generic way is to set up a processing time array on the processor for the types - shown here with 3 seconds for type1 and then 1 second for type2 (could also be zero):

Then in the processtime trigger use SQL to get a table of types and their quantities:

/**Pallet of Type Based Process Times from label array */

Table result =Table.query("SELECT Type,count(*) FROM $1 GROUP BY Type",item);     // create the table with type and quantity
double ptime=0;
for (int n=result.numRows;n>0;n--) {
    ptime+=result[n][2]*current.typeProcTimes[result[n][1]];   //increment the process time by the quantity and the time for the type
}
return ptime;

This way you can edit the array with times for each type.

Model attached.

processtimeby-itemtypecount_jl.fsm