Make Robot pick next item in queue

Question

question

Raj Sivaraj asked Jul 17 2018 at 12:31 AM Isaac Litster commented Jul 23 2018 at 2:48 PM

Make Robot pick next item in queue

I am using a Robot to move a flow item from a Queue to a Processor. By default, the Robot does not proceed to pick another item until the Processor has completed it's process and moved the item. How do I make the Robot start picking the next item in the queue while the Processor is processing the previous item?

Software Version:

FlexSim 16.1.2

queue processor robot tasksequence

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Answer 1 · 2018-07-17T05:07:51Z

jing.c answered Jul 17 2018 at 5:07 AM jing.c commented Jul 18 2018 at 2:22 AM

Hi, @Raj Sivaraj

Not quite sure if you are familiar with ProcessFlow Module. If you use PF, it will be easy.

Firstly, you should create a FR list for making out if the processor can receive an item or not.

Don't forget push the Processor back to list when item exit from it.

Then I suggest to use TASKTYPE_PLACEOFFSET task to conduct the robot load the item and move it to the destination(processor) while holding the item until the processor available(pull from the list).

I attach a sample and hope it helps~

loadinadvancebychjv16.fsm

fr-list.png (35.0 KiB)

loadinadvancebychjv16.fsm (127.9 KiB)

· 3

Raj Sivaraj commented · Jul 17 2018 at 4:30 PM

Thank you @jing.chen. I'm quiet new to PF but I think I get the logic. Can you however tell me how to accomplish the same with triggers and making the TaskExecuter use the Place_Offset type task using its settings?

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Raj Sivaraj commented · Jul 17 2018 at 11:07 PM

@jing.chen - I was able to modify your PF sequence and use it as needed, thanks! I do have a follow up question:
In one of my use-cases, I'm using a Combiner with 3 robot inputs; I can't push the Combiner to the list before it is done processing, so the second (and third) material handler cannot drop into it because it isn't ready to receive.
How do I go about freeing the Combiner before an "OnExit" trigger would?

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jing.c Raj Sivaraj commented · Jul 18 2018 at 2:22 AM

Hi, @Raj Sivaraj

Your new demand use combiner may be a little more complex than a normal processor.

I add another list for storing item from different input, and when the combiner(I still use processor cause the PF logic will replace with the standard combiner logic) is available, I firstly stop the processor and then begin follow-up processes of "pull from list".

In V2016, the PF is not so convenient. In v2017 or further, I will use a FixexResource Flow releace with all subFlows of different queue in General Flow.

P.S. label "input" which I created in OnEnrty of queue is a key parameter for distinguish different upstream items in "pull from list"(itemlist).

May it helps~

loadinadvance-combinerbychjv16.fsm

0 ·

loadinadvance-combinerbychjv16.fsm (57.7 KiB)

Answer 2 · 2018-07-17T11:25:20Z

Adrian K2 answered Jul 17 2018 at 11:25 AM

Hi

The simpliest way is to use trigger OnUnload

and predefined function "Travel to an Object"

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