Batch in queue with process flow.

Question

question

Kari Payton asked Dec 15, '17 Phil BoBo commented Jan 17, '18

Batch in queue with process flow.

In my model I have a forklift taking trash to a big scrap zone. I want the forklift to collect all items in the trash can (queue) and transport. However I'm having trouble implementing the logic.

I am trying to batch incoming items in the queue and send it to a list so the forklift knows what bins need emptying. Is it possible to batch objects created in process flow into a queue in 3D?

I also tried having the forklift request 100 items of scrap and only require 1 item. However it's only pulling 1 item and leaving the other 4 on the list, for example.

Software Version:

FlexSim 17.2.3

batch

Answer 1 · 2017-12-15T21:20:10Z

Jacob Gillespie answered Dec 15, '17 Phil BoBo commented Jan 17, '18

Here is a small sample model I made. I made it request 100 items but only require 1. The tricky thing is you can't pass an array into the load and unload activities.

batchforklift.fsm

batchforklift.fsm (22.5 KiB)

· 5

Kari Payton commented · Dec 18, 2017 at 08:52 PM

Thanks Jacob!

0 ·

Jason Merschat commented · Jan 17, 2018 at 12:24 AM

Hi @Jacob Gillespie

This line is very interesting token.i == 1 ? token.pulled : token.pulled[token.i]

Can you explain what this is doing please?

Thanks, Jason

0 ·

Joerg Vogel Jason Merschat commented · Jan 17, 2018 at 05:14 AM

it is the short structure of the statement if (logical condition) true instruction else false instruction.

logical condition ? true instruction : false instruction

2 ·

Phil BoBo ♦♦ Joerg Vogel commented · Jan 17, 2018 at 10:34 PM

This is known as the ternary operator.

I'm not sure why it isn't documented in the user manual.

0 ·

Jacob Gillespie ♦ Jason Merschat commented · Jan 17, 2018 at 05:17 PM

When you pass an array into the load or unload activity then only the first element of the array is used. So if the index (token.i) is 1 then I made it use token.pulled.

I did it this way because token.pulled is not an array if only one thing was pulled and so token.pulled[token.i] would throw an exception in this case.

1 ·

question