Operator Task Sequence: Wait Until 1st Task is done

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komalkoli asked Jun 16, '24 Logan Gold commented Jul 3, '24

Operator Task Sequence: Wait Until 1st Task is done

Here is the process flow for an operator:

Task 1: Operator waits until 100 items arrive at Queue1 and move these items

Task 2: After finishing 1st task, same operator move 50 items from Queue2

50 items arrive at Queue2 well before 100 items arrive at Queue1. So, operator is moving to Task 2 as soon as 50 items arrive at Queue2 & then completing Task 1. I would like him to finish Task 1 first and then complete task 2.

I tried Preempt option, priority option, and task sequencing option but it did not work. What is best way to sequencing the task 1 and then task 2?

Software Version:

FlexSim 24.1.0

operator task sequence priority

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5 |100000

Attachments: Up to 12 attachments (including images) can be used with a maximum of 23.8 MiB each and 47.7 MiB total.

Felix Möhlmann commented · Jun 17 at 08:57 AM

How do you control the operator so far? In a Process Flow it should be easy to set up two sequential task sequences for this.

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komalkoli Felix Möhlmann commented · Jun 17 at 02:19 PM

I am using process flow. With the triggered source, I have two different task sequences. One for Task1 and another for Task2.

Can you give example how would you do two task sequences?

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Logan Gold ♦♦ commented · Jul 03 at 06:51 PM

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Answer 1 · 2024-06-17T14:41:12Z

Felix Möhlmann answered Jun 17, '24 Felix Möhlmann edited Jun 19, '24

If the tasks have to happen in a fixed sequence then build them as a single sequence. You can use lists to check for the needed quantity of items, so they can still accumulate independently without having to immediately start the transport when the threshold is reached.

transport-sequence.fsm

transport-sequence.fsm (33.9 KiB)

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5 |100000

Attachments: Up to 12 attachments (including images) can be used with a maximum of 23.8 MiB each and 47.7 MiB total.

komalkoli commented · Jun 17 at 02:54 PM

Thanks for your quick response!

In your example, you have used same source for Queue 1 & Queue 2. For my case, I have two different sources respectively for Task 1 & Task 2.

Can you send same example with two different sources and use of operator?

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Felix Möhlmann komalkoli commented · Jun 18 at 06:11 AM

I don't see how the number of queues would have an impact on the logical structure. And using an operator just means to replace the Move activity with a task sequence to transport the items.

transport-sequence_1.fsm

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transport-sequence-1.fsm (40.6 KiB)

komalkoli Felix Möhlmann commented · Jun 18 at 01:43 PM

Thank you for your response!

Please see attached picture how my process works. I have two different sources for two tasks. I want operator to pick items from Queue1 first and then from Queue2, no matter if all items at Queue2 arrive first. I don't know how I can use "Lists" with two different sources?

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queue-priority.png (40.7 KiB)

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