topic Re: Object Dispatcher is an invalid destination in FlexSim Forum

Object Dispatcher is an invalid destination

alejandro_ulises_tp — Wed, 11 Sep 2019 14:21:58 GMT

[ FlexSim 19.1.2 ]

chargers-simulation-error.fsm error.pngI want to use a dispatcher with two operators for the odd processors and another dispatcher with two operators for the even processors. When I want to do that it pops up the error "Object/Dispatcher1 is an invalid destination to send item" anyone knows what am I doing wrong?

Re: Object Dispatcher is an invalid destination

SCHamoen — Wed, 11 Sep 2019 15:01:34 GMT

@Alejandro Ulises TP

I think you added the wrong model because this model has no dispatchers, only 1 operator and no errors. So if you could post your model with the error we can take a look

Re: Object Dispatcher is an invalid destination

alejandro_ulises_tp — Wed, 11 Sep 2019 16:19:33 GMT

I'm sorry, you are right.

This is the model I'm having problem with

chargers-simulation-error.fsm

I hope you can help me

Re: Object Dispatcher is an invalid destination

joerg_vogel_HsH — Wed, 11 Sep 2019 16:55:20 GMT

The centerports are interchanged at the processors (CHARGER#). The error occurs for the CHARGER1. You open the properties of the CHARGER, switch to the Generat Tab. Bottom area: Port.

Select the Central Ports. Set the rank of the DP1 from 1 to 2.

Re: Object Dispatcher is an invalid destination

Matthew_Gillespie — Wed, 11 Sep 2019 17:00:33 GMT

The centerport connections on the Odd Processors are backwards from what you seem to be expecting. The processors are first connected to the decision points and then to the dispatcher. If you open the processor's properties page and go to the General tab, you can use the Ports box at the bottom to reorder the port connections. Here is a fixed version of your model:

fixed.fsm

Re: Object Dispatcher is an invalid destination

alejandro_ulises_tp — Wed, 11 Sep 2019 18:15:52 GMT

How do you know the order it should be connected? That kind of things got me confused but i'm still learning little by little!

Thank you so much Matthew!

Re: Object Dispatcher is an invalid destination

alejandro_ulises_tp — Wed, 11 Sep 2019 18:17:01 GMT

That worked! but I would like to understand why does the order matter in the center ports?

Re: Object Dispatcher is an invalid destination

Matthew_Gillespie — Wed, 11 Sep 2019 18:20:49 GMT

There isn't any order that things have to be connected in. The issue is that you wrote code where you made the assumption that all the processors in your model were first connected to the dispatcher and then second to a decision point. However, only half of the processors used this order and the other half had the opposite order.

Re: Object Dispatcher is an invalid destination

alejandro_ulises_tp — Wed, 11 Sep 2019 18:24:16 GMT

could you send me where is the code wrote where the assumption was made?

Re: Object Dispatcher is an invalid destination

Matthew_Gillespie — Wed, 11 Sep 2019 18:40:02 GMT

In the Send to Odd Conveyor activity you have this line of code:

token.Odd.as(Object).centerObjects[2]

This is saying to send the item to the 2nd object connected to the Odd processor's center ports. The same code is also in the Send to Even Conveyor activities.

Then on the processors themselves in the Use Transport field you have this line of code:

current.centerObjects[1]

This tells the processor to use the 1st object connected to its center ports to transport things.

Re: Object Dispatcher is an invalid destination

alejandro_ulises_tp — Wed, 11 Sep 2019 19:45:59 GMT

You are the best!

Thanks to you now I understand this error.