topic Re: How can I accurately send items to a specific slot on the rack? in FlexSim Forum

How can I accurately send items to a specific slot on the rack?

j08j — Fri, 26 Apr 2024 07:27:39 GMT

[ FlexSim 24.0.2 ]

I use the following code to define how items in the queue are processed and transported to the rack, but TASKTYPE_UNLOAD can only specify the transfer to the rack without explicitly specifying the transfer to a specific slot on the rack. How can I modify this code to accurately send items to a specific slot on the rack?

Queue.setProperty("TransportRef", "Object current = ownerobject(c);\n\
Object item = param(1);\n\
int port = param(2);\n\
Object destination = param(3);\n\
double priority = param(4);\n\
int preempt = param(5);\n\
\n\
/***popup:PushToList:listType=TaskSequence*/\n\
/**Push to Task Sequence List*/\n\
/***tag:showAdvanced*//**1*/\n\
\n\
if (true) {\n\
TaskSequence taskSequence = TaskSequence.create(assertattribute(current, \"stored\", 0), priority, preempt);\n\
\n\
taskSequence.addTask(TASKTYPE_TRAVEL, current, NULL);\n\
taskSequence.addTask(TASKTYPE_LOAD, item, current, port);\n\
taskSequence.addTask(TASKTYPE_BREAK, NULL, NULL);\n\
taskSequence.addTask(TASKTYPE_TRAVEL, destination, NULL);\n\
taskSequence.addTask(TASKTYPE_UNLOAD, item, destination, opipno(current,port));\n\
string listName = \"TSList1\";\n\
List(listName).push(taskSequence, 0);\n\
current.centerObjects[1].message(0.01,current);\n\
}\n\
return 0;\n\
");

model.fsm

Thank you.

Re: How can I accurately send items to a specific slot on the rack?

moehlmann_fe — Fri, 26 Apr 2024 08:14:17 GMT

You already have code for the source that feeds directly into the rack to assign a random slot to the exiting item.

int i = duniform(1, Bay, 1);\n\
int j = duniform(1, Level, 1);\n\
int k = duniform(1, Slot, 1);\n\
Storage.Item(item).as(Storage.Item).assignedSlot = current.outObjects[1].as(Storage.Object).getSlot(i, j, k);\n\

You can do the same for the items transported by ASRS.

Re: How can I accurately send items to a specific slot on the rack?

j08j — Fri, 26 Apr 2024 13:37:32 GMT

Queue.setProperty("TransportRef", "Object current = ownerobject(c);\n\
Object item = param(1);\n\
int port = param(2);\n\
Object destination = param(3);\n\
double priority = param(4);\n\
int preempt = param(5);\n\
\n\
/***popup:PushToList:listType=TaskSequence*/\n\
/**Push to Task Sequence List*/\n\
/***tag:showAdvanced*//**1*/\n\
\n\
if (true) {\n\
TaskSequence taskSequence = TaskSequence.create(assertattribute(current, \"stored\", 0), priority, preempt);\n\
\n\
taskSequence.addTask(TASKTYPE_TRAVEL, current, NULL);\n\
taskSequence.addTask(TASKTYPE_LOAD, item, current, port);\n\
taskSequence.addTask(TASKTYPE_BREAK, NULL, NULL);\n\
taskSequence.addTask(TASKTYPE_TRAVEL, destination, NULL);\n\
int i = duniform(1, Bay, 1);\n\
int j = duniform(1, Level, 1);\n\
int k = duniform(1, Slot, 1);\n\
Storage.Item(item).as(Storage.Item).assignedSlot = current.outObjects[1].as(Storage.Object).getSlot(i, j, k);\n\
taskSequence.addTask(TASKTYPE_UNLOAD, item, destination, opipno(current,port));\n\
string listName = \"TSList1\";\n\
List(listName).push(taskSequence, 0);\n\
current.centerObjects[1].message(0.01,current);\n\
}\n\
return 0;\n\
");

I've tried this code before, but I couldn't simulate the model successfully. It stops when it tries to execute the action of placing items from the queue into the rack.

model.fsm

Re: How can I accurately send items to a specific slot on the rack?

moehlmann_fe — Fri, 26 Apr 2024 13:44:38 GMT

"Bay", "Level" and "Slot" are not defined at that point in the code. I only copied part of the source's code to highlight the relevant part: Determining the bay, level and slot ID and assigning the slot to the item.

I assumed you'd use labels to assign the items to specific slots, not use random number distributions.

The "transportdispatcher" variable node is also currently not toggled as FlexScript in your model.

Re: How can I accurately send items to a specific slot on the rack?

j08j — Sat, 27 Apr 2024 15:28:30 GMT

Is there a way to define "Bay", "Level" and "Slot" in this code?

Re: How can I accurately send items to a specific slot on the rack?

moehlmann_fe — Mon, 29 Apr 2024 06:10:03 GMT

Of course you can define those variables in the code. You can also use different names or labels.

As I said, you already have working code in place for the source, so I don't understand what you are struggling with to adapt that code for the queue.

Re: How can I accurately send items to a specific slot on the rack?

j08j — Mon, 29 Apr 2024 07:54:17 GMT

I found my mistake, sorry for causing you trouble, thank you for your reply.