block a source ?

Hi all,

can you block a source until I want?

I could block a queue, but a source I cannot.

The code I used to block the queue is as follows:


treenode current = ownerobject(c);
if(getstatenum(current) != STATE_BLOCKED)
stopobject(current,STATE_BLOCKED);

Thank's.

As far as I know, you can use stopobject() and resumeobject() on a Source. I also checked some time ago if I can give a Source MTBF and MTTR, which is working (and is using behind the scenes the two commands).
Another way could be to close the output of the Source, so no items will leave the Source and arrive in the model.
The difference in my eyes is, that with stopobject() and resumeobject() the events will be shifted (event to generate the next item). With closeoutput() the event is still fired to create the item, but the item can not leave.
So the difference is that in the first case the item will not leave, because it is not generated yet. In the second case the item is generated and will leave after open the output.

So I guess, it depends in what you are going to do. To give you a "good" answer I guess we need more information what exactly you like to do.

Hi,

What I want is to get the boat to a point (f.i NN3), the crane download a certain number of containers (defined by the labels).

The solution is thought to put a source, and when the boat reaches the discharge point (NN3), the source launch a certain number of containers to a queue, and not before, so you want to lock the source until the boat gets to the point NN3.


The ideal solution for the model I assume that would initially load the ships (item), with a number inside the container (items), I suppose that using the "insertcopy" command, but I have not managed to make it work.

I tried to upload the model but it gives me an error

Thank's.

I trying to upload the model but it gives me an error

Have you thought about using a combiner to model the loading of the ship?

You can use a taskexecuter as flowitem that moves over the path, goes into the combiner and then picks up the right amount of containers.
Or you use a forklifttruck (as the ship) and have it bring a pallet (kind of the order list) to a combiner which picks up the right amount of containers.

If you want to lock the source, it is enough to close the output of the source and use the output counter (getoutput) to close the output again if the right amount of products have left.

[quote=Steven Hamoen;4461]Have you thought about using a combiner to model the loading of the ship?

Hi,

Thanks Steven, I have obtained to block source with the command "getoutput".