Entry trigger

Dear All,

I have taken a small problem like this.

Source -à Queue1 -à Queue2 -à Processor -à Rack

I have used the on entry trigger as follows.

‘If “content (current) > 2” then “close input” ports of the “current” objects

My aim was to limit the quantity in the queue2 to 2. But the quantity is going-on increasing up-to the maximum level defined. I want to know where the problem was. Help me.
(Of course, another way is to declare the maximum content as 2 in the parameters window directly)

With an OnEntry trigger on Queue2 as you specified, the flow will be permanently blocked as soon as a flowitem enters and the content becomes greater than 2 (e.g. there are already 2 flowitems in the queue). I'm not sure why your flow continues... Something else must be enfluencing your model. Are you using the current version of Flexsim (v4.01)?

To achieve the same result as changing the Maximum Content field of Queue2 to 2, you would need to define an OnEntry, OnExit and OnMessage trigger on Queue2 as shown below. As the Flexsim help warns, you should never open ports in an entry or exit trigger. It is better to send a delayed message in zero seconds and then open the ports. This allows the flowitem that trips the trigger to settle into its destination object and applicable statistics to first update.

OnEntry: if(content(current) >= 2) closeinput(current);

OnExit: if(content(current) <= 2) senddelayedmessage(current);

OnMessage: openinput(current);

Dear Sir,

Thank you for your reply.
I have Flexsim 3 licenced version in my institution. So I am using the same.
CanI download the version 4 directly from internet?

Regards,
Mallik.

The latest version of the software is always available free of charge to users current on their maintenance agreement with Flexsim. The software can be downloaded from https://account.flexsim.com/downloads after logging in with the User Name and User Code that are associated with the active license.

Dear Sir,

I have tried many times to use send msg option in the above problem. But still I didn't get that.

I could download Flexsim4 but it is not getting installed even Flexsim3 is working good on my computer.

Your suggestions please.