remove from rack

HI everybody


I wonder if we want to remove some items randomly(not by dwell time) from a rack what needs to be done?

Well, the dwelltime is set to a big number and a random number between 1 and content(rack) will determine the container.

now how to send it to exit port?

To control the release you can hold the item by returning -1 in the sendtoport trigger, and then release it using the command "releaseitem(<theitem>,<theport>)".

You can randomly choose the item using something like: rank(<rackobj>,uniform(1,content(<rackobj>)))

By specifying the port you will bypass the sendtotrigger. Without it the send to trigger would fire again and in the simple case described above would hold the item again.

Hi,
Can you please specify in which trigger the "releasetiem" comment has to be written. I have tried it in send to port trigger below "return -1". If a sample model is attached it will be very useful. Thanks in advance.

Nothing gets executed after "return" since it's marks the exit point(s) of the code.

It's not a question of where so much as 'when' - since if you have a reference to the item, you can call it from anywhere. If this gets you into 'hot water' then try using attributes, a pull rule and opening ports instead (to retrigger the pull).