Recording items in a batch producing system

Hi guys,

pretty easy question but it seems that I got lost somewhere:

I have a demand driven production system that operates different batch sizes on different echelons. I want to record staytimes, wip, etc. in a global table.

Therefore I want to set the rows in the global table "EventTime" to be the single items (I only consider one itemtype). The columns indicate the arrivals and departures to and from the different objects. The source releases me batches and no single items. I want to have a continuous numbering of the rows in this table according to the items that are released to the production system (1,2,3......). How can I do that?
I tried
inc(label(item,"Stueck"), 1);
in the OnExit Trigger of the Source where "Stueck" is the item label that represents the items. Unfortunately it didn't work out. I think the probelm is that the Source does not release single items but rather batches. This is a precondition of the model and cannot be changed. I also managed to track the time of arrival to WS1 (see in the OnEntry Trigger of object "WS1") but the number always gets actualized in the first cell of the table. How can I do that?

thank you very much for some hints!!!
best regards,
simon


Sorry for the model that is programmed in Flexsim 4...I hope you can deal with it.

Simon,

what you do increments the label of every single item from its current value by one. Since the current value is zero, unless you changed it somewhere else, it sets it to one for every item, explaining why always row one of the table is used.
You have to increment a label on the Source to use as a counter and then copy that value to the label of the item. Although you release batches, every single item causes the OnExit trigger to fire separately.

Hope that helps?

Ralf
FlexSim

Here is the related thread
http://www.flexsim.com/community/for...read.php?t=892

Thank you very much for your help Ralf! Your idea made me think again on this issue and I managed to integrate what I wanted!

Thanks sagar for the link - nice thread that also helped a lot.

How did I solve it:

OnEntry Trigger for each Object in my model:

//Document Arrival
setlabelnum(item, "ArrivalWS1", time());

OnExitTrigger for each Object in my model:

//Document Departure
setlabelnum(item, "DepartureWS1", time());

//Calculate flow time for this object

double FlowtimeWS1 = getlabelnum(item, "DepartureWS1") - getlabelnum(item, "ArrivalWS1");

//Write Flow Time into global table
settablenum("EventTime", getlabelnum(item, "Stueck"), 1, FlowtimeWS1);
settablesize("EventTime",gettablerows("EventTime")+1, gettablecols("EventTime"));


The problem with the counter:

OnExit Trigger of the Source:

int UnitNumber;
inc(label(current, "UnitNumber"), 1);

setlabelnum(item,"Stueck", getlabelnum(current, "UnitNumber"));