items pulling from List

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christoph gruber asked Jul 10, '20 christoph gruber answered Jul 10, '20

items pulling from List

I will build a simple model. But a lot of problems appears.

Before I worked through the Tutorial 4 -Process Flow Instances!

Have to put pallets with a robot from a queue to another. And if the first queue is emty an AGV have to bring new pallets.

Problem 1: request number in pull from list not works correct - I don´t know why?

Problem 2: when I used the robot instead of a processor there is a error message!

Problem 3: the AGV don´t load 8 pallets per transport. What´s wrong in my PF logic. The label "EmtyPallet" on the token is an Array - have I used subflows to load al 8 pallets per transport?

PF_Robot_Test.fsm - with a processor

PF_Robot_Test.fsm

PF_Robot_Test_1.fsm - the same model with a robot

PF_Robot_Test_1.fsm

Great thanks for helping me in advance

Software Version:

FlexSim 20.1.3

flexsim 20.1.3 list pf

listpulling.png (276.8 KiB)

pf-robot-test.fsm (48.3 KiB)

pf-robot-test-1.fsm (47.9 KiB)

Answer 1 · 2020-07-10T11:26:04Z

Joerg Vogel answered Jul 10, '20

Sure it does what you want, you have TWO pull from list activities in Pallet Usage!
Yes, it has something to do with stop object in Pallet Usage! If you deactivate this Process the model works fine!
If you parse an array in a load activity, only the first element of the array is evaluated! Indeed you need a run sub flow structure.

pf_robot_test_jv.fsm

pf-robot-test-jv.fsm (49.8 KiB)

Answer 2 · 2020-07-10T19:13:15Z

christoph gruber answered Jul 10, '20

@joerg.vogel

sorry I forgot, that is the final model that works in my way :) thanks again Jörg for you hint!

PF_Robot_Final.fsm

pf-robot-final.fsm (50.3 KiB)

Answer 3 · 2020-07-10T18:28:25Z

christoph gruber answered Jul 10, '20

Thank you so much @joerg.vogel

Now I see, problem 1 and poblem 2 belongs together. When I change the rank in the first "Pull from List" object in "Pallet Usage" the problems disappears!

The picture below shows the right rank.

rank-change.png (47.2 KiB)

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