How to open/close a single port in objects

Hi Friends,
The closeinput()/closeoutput() command closes all the input/output objects associated with the ports. Is there any command or way to open/close the required ports in the input and output of object.
Flexsim documentation states closeip() cant be used for discrete objects.
Eg. If port1 and port2 are connected to input ports of object1. only port1 has to be in open state and port 2 in closed state. How to achieve this?

Hello,

a workaround is to place a queue in front of every input port and close the input of the queue.

Jörg

Hi.

You can designate the port number of close/open port like closeip(current, port1).
port1 is the number of port.

You can find the reference in help file.

Hi Jorg,
I have tried placing separate queue and closing its port, its working fine.
But i need the way to close and open port as mentioned in example from the origin object.

Hi syseo,
I have tried this command closeop(current,2) in the origin object but still it does not stop flowitems from reaching port2.

From the command list:

closeip(obj object, num inputportnum)
Close just inputportnum of object. Closing an input port of an object will block entry to the object through that port. Modelers should only use this command when working with fluid objects because the internal behavior of discrete objects controls the opening and closing of their ports, and therefore this command may be overridden. For discrete objects the modeler is referred to closeinput() and stopinput().

you stated:

Flexsim documentation states closeip() cant be used for discrete objects.

I think that your interpretation is a bit off ;-)
Don't use closeip unless you know what you are doing because Flexsim might override your functionality!

Hi Hamoen,
I have even used closeip(current, portnum) command but its not stopping the flowitem from entering into object. Is there any other option to close the required portnum alone instead of closing the whole port using closeinput().

Have you though about using a pull rull on the receiving object? Then you can define through which port you want to pull something. Or use the sendtoport logic to determine if something can go through a port.

Maybe explain more what you want to do, then we can determine better how to help you.

I am having the same problem. I am trying to build a carousel loader. I am using a queue with the maximum content and then i have to send my finished part back to the queue, but i change their itemtype number and send them to a different port via operator. I need to close the input port 1 for new items because i need a spot for the finished part to be stored in the queue.... if i let one in through that port i block the machine from sending it back to the queue.

So why don´t you close the output of the object connected to inputport 1 of your Queue?

Well I tried that... and for some reason I couldn't get it to work. I am trying some different... what trigger event would i want to put it under? The items that leave the processor enter the same queue that they left from... i think that is why i am having issues.... one queue needs to send and catch the parts to and from the processor so capacity is always a max of (x) (your carousel size).

Please post your model and a small explanation of what doesn´t work.

Actually I went back and changed some things with my coding and everything is working now. Thanks everyone for the help!