topic Transporter idle, blocked, trigger question in FlexSim Forum

Transporter idle, blocked, trigger question

jaehwan_s — Sun, 14 Feb 2021 03:51:06 GMT

[ FlexSim 20.2.2 ]

I would like the transporter to move to a different location (like their home destination) when it is on idle status, so other transporters are not blocked. I set an on resource available trigger that sends that the transporters to their home location but don't think it is working. Please help, thank you.

Transporter idle question.fsm

Re: Transporter idle, blocked, trigger question

SimFlex_support — Sun, 14 Feb 2021 12:52:09 GMT

@jaehwan.s

Do you know how to use the dispatcher57 to control the transporters?

1) Connect the dispatcher57 to the transporters using 'a' key (from the dispatcher to transporters). The result is the dispatcher to control the transporters.

2) Sending Objects like the combiners or separators or queues should be connected also to the dispatcher using 's' key. This connections are for the sending resources send the jobs' transporting the totes to the dispatcher57. Before connecting, you should connect the sending objects with the receiving objects using 'a' key.

3-1) Set the triggers 'on Resource Available' of the dispatcher to 'Travel to Home Location' like attched.

The condition is the transporter to have not any job.

This setting makes the transporter moved to one point of the dispatcher's centerobject[1].

3-2) Or you can make each transporter moved to each point when setting the resources' 'On Resource Available' trigger to the destination like the captured screen.

Re: Transporter idle, blocked, trigger question

jason_lightfoot_adsk — Sun, 14 Feb 2021 14:33:43 GMT

Here's a version (no dispatchers required) where I've added a user command getAGVhome to find the position of each AGV, which means you can keep the trigger expression for destination on all the AGVs the same (reducing modelling workload).

getAGVhome(current)

It relies on the tree so I've put it in a user command in case this changes or resetPoint becomes part of the AGV properties (which I will request to dev now).

transporter-idle-question_jl.fsm

Re: Transporter idle, blocked, trigger question

jaehwan_s — Mon, 15 Feb 2021 01:33:35 GMT

I can't seem to download the file, is this a temporary error?

Re: Transporter idle, blocked, trigger question

jason_lightfoot_adsk — Mon, 15 Feb 2021 01:54:59 GMT

Thanks for pointing this out. I've re-uploaded it.

Re: Transporter idle, blocked, trigger question

jason_lightfoot_adsk — Tue, 23 Feb 2021 08:01:13 GMT

Hi @jaehwan.s- we noticed you unaccepted the answer to this question. Can you add a description of what you still need for this?

Re: Transporter idle, blocked, trigger question

jaehwan_s — Tue, 23 Feb 2021 09:06:58 GMT

I should have unaccepted the answer when I was ready to post further queries. I was working on it on my own first.

So, the transporters behaves a bit inefficiently. The transporters would go to their home location by 'on resource available' trigger even though the transporters should have tasks to do.

Also, if possible, I would like the transporters to stop going to their home locations and start doing tasks if tasks are available, even if the transporters were going to their home locations.

Re: Transporter idle, blocked, trigger question

jason_lightfoot_adsk — Thu, 25 Feb 2021 00:12:27 GMT

Attached is a version that also checks the dispatcher task queue assuming the dispatcher is on input 1.

To get new tasks to interrupt a return home trip, you should set the new tasks to preempt and give them a higher priority than the return home task.transporter-idle-question_jl2.fsm

Re: Transporter idle, blocked, trigger question

jason_lightfoot_adsk — Sun, 28 Feb 2021 14:13:52 GMT

See my post from 3 days ago as a comment to the original answer.

Re: Transporter idle, blocked, trigger question

jaehwan_s — Wed, 03 Mar 2021 02:22:47 GMT

When you say "you should set the new tasks to preempt and give them a higher priority than the return home task", do you mean I need set a higher priority on the upsteam source?

Re: Transporter idle, blocked, trigger question

jason_lightfoot_adsk — Wed, 03 Mar 2021 23:50:09 GMT

All the tasksequences that you want to interrupt the travel home should have a higher priority than the travel home task sequence which will default to zero.