Task executer running Free on Agv Network

Hello Friends,
i’m a new user and i have a couple of question to give you about Flexsim.

1) Are there any solutions to implement in order to make run Task Executers on a Network
(I choose AGV Network cause its versatility) without using any FixedResources, running them free on the network ? And in that case how I could randomly send to a random TE an
instruction that block it for a while ?

2) Can I use a Visual Tool to display on the model the current speed of a TE during his running on the network ?

Thank you
Daniele

Hello Daniela,

If you want to block or to let him stand still, you can dispatch a preempting tasksequence to a taskexecuter, which let him wait until he is freed or he waits an amount of time. It is depending on the task you give him.

For example you can place the creation and dispatching of the tasksequence in the OnMessage-Trigger of the Taskexecuter. If he receives a message he will instantly interrupt his current task and he stands still. Next you find the source code for this action.

treenode ts = createemptytasksequence(current,1,PREEMPT_ONLY);
inserttask(ts,TASKTYPE_UTILIZE,NULL,NULL,STATE_STOPPED,0,0,0);
dispatchtasksequence(ts);

In this case the taskexecuter waits until he gets a command, which tells him to procced with his previous preempted task.
The command freeoperators(obj taskexecuter, NULL) does this. The expression obj taskexecuter is a referrence or pointer to the taskexecuter.
Otherwise if you like a specific wait time, the inserttask line is:

inserttask(ts,TASKTYPE_DELAY,NULL,NULL, 12.4, STATE_STOPPED);

Wherein 12.4 is the wait time.

Jörg

Ok thank you !!

That's a well-done solution. Can i use the Dispatcher Trigger "Custom Draw" to send a message at random time to one of the TE ? Cause, remember, i want to use only dispatcher and TE running on AGV network.

I still try to find a solution to display the current speed

Hi Daniele,

the custom draw code triggers fires to many times and is dependent on the run speed. It is a better way to send a delayed message on a reset trigger and then send delayed messages again from the on message trigger for any further events you need. You can use a statistical distribution for the delay time parameter of the message., e.g. command line from the OnMessage-trigger of an object, even a taskexecuter object.

senddelayedmessage(current,uniform(60,3600,2),current);

Jörg

If you query the variables kinematic node of your Taskexecuter, the current speed is a value of the kinematic structure, that you can receive to any time stamp with the command getkinematics(...). Please look at the User Manual: Miscellaneous Concepts > Kinematics > Commands > Other Kinematics Commands.

For example the following function returns a double value of the current total velocity. The name of the Taskexecuter is "TaskExecuter9". You can store the value in a label and show it in a dynamic text in the dashboard.
getkinematics(node("MODEL:/AGVNetwork>variables/agvs/TaskExecuter9/kinematics",model()),KINEMATIC_VELOCITY,0,time())
For a Visual Text Tool you convert the label value to a string:

string text = numtostring(getlabelnum(prev(current), "meanspeed"),3,1);

Jörg

Thank You Jorg,

at least i resolve one problem !

Thank you so much Jorg !!

In fact i explore the tree so much trying to find a variable ! I just missed them :-D

Maybe next time i will use the search tool

kind regards

daniele