Set Logic At Queue - Batching

Question

question

Arvind J asked Jul 18, '22 Felix Möhlmann answered Jul 18, '22

Set Logic At Queue - Batching

Hi All,

Please advice on the box that out from Processor 1.

After the box out from Processor1, it should batch until 8 boxes at queue1 then only can send to processor 2.

The batching logic should follow as below

8,10,8,10,8,10

For the first time it should batch 8 boxes, then followed by 10 boxes and the cycle repeated again.

batching.fsm

Software Version:

FlexSim 21.0.10

processors order batching batching grouping queue logic queue items

1658107852783.png (76.1 KiB)

batching.fsm (27.1 KiB)

· 2

David Seo commented · Jul 18, 2022 at 02:08 AM

You can solve your issue using 'Perform Batching' field in Queue. Or You can use 'Combine' object. And then if you have some more issue, upload it again.

0 ·

Arvind J David Seo commented · Jul 18, 2022 at 06:23 AM

Hi David Seo,

I have tried "perform batching".

After 10 boxes arrive At Queue1, it should send to processor 2.

After 8 boxes arrive At Queue4, it should send to processor 2.

All this 18 boxes are same SKU. In the above diagram you can see there's still red boxes in Queue1, but green boxes already start to produce at processor2.

batching.fsm

0 ·

1658125263051.png (89.1 KiB)

batching.fsm (33.1 KiB)

Answer 1 · 2022-07-18T06:28:39Z

Felix Möhlmann answered Jul 18, '22

In addition to what David Seo wrote in his comment: You can use triggers on the queue to update the batch size property of the queue.

If 'Flush contents between batches' is active, you can use the option 'Update Queue's Batch Size' in the entry trigger and set it to switch between 8 and 10.

This line checks whether the batch size is currently set to 8. If so, it returns 10, otherwise 8.

batching-fm.fsm

The option above sets the batch size when the first item enters the queue (queues goes from empty to having one item). If the content is not flushed between batches, the queue might not ever be empty, so you need to customize the updating of the batch size further.

This code first checks if the total input of the queue is divisible by 18 (mod operator '%'). If that is the case, a batch of 10 must have been completed and the batch size is set back to 8 (on 18, 36, 54,...). On the other hand, if the input - 8 is divisible by 18, a batch of 8 was completed and it is set to 10 next (on 8, 26, 44, ...).
(Both calculations are offset by and additional -1, because the trigger should set the batch size when the first item of a new batch enters)

batching-fm_1.fsm

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batching-fm.fsm (28.8 KiB)

batching-fm-1.fsm (28.7 KiB)