Hi Alperen. You should call if operator.

if (queue.size()>=10) { // size of queue of machine 2

source.arrival.suspend(); // delay creation of entities in machine 1

}

else if (queue.size()

Also check those url:

http://disi.unal.edu.co/profesores/jeortizt/Sim/Archivos/02.Arena/02D1.%20CursoARENA_4_PanelProcesosAvanzados_JorgeEduardoOrtizT.pdf

http://www.vms-technology.com/book/arena/download/arena_tutorial.pdf

My best regards.

Hi Dimitri and Andrey,

I do appreciate your help! You provide a good insight to deal with the issue.

Dimitri, I tried using if elseif blocks to implement your codes but I had some difficulties. Could you elaborate what you mean by calling if operator?

Thank you.

How did you represented the operations of two machines?

Are they same process flow diagrams with separated "Source" objects?

Pls make a printscreen.

I've also added the printscreen of solution in AnyLogic software, they are quite similar.

P.S. my first answer was not correct (mistakes in code, cause made it in the morning....)

Hi Dimitri,

In Anylogic, it is suitable to add the code directly. I guess, Arena does not allow directly to write or I don't know how to do it. Initially, I tried it with if blocks in Arena. Later, I developed a solution using blockage element and block-unblock blocks.

In the simulation logic, I've added a control logic to the main flow. The control logic checks the queue. There, block blocks the entity flow if machine 2 queue exceeds 10, and unblock starts entity flow again if machine 2 queue reduces below 5.

I've shared the print screen of the Arena model.

Best regards.