Using Photo Eye, I'm trying to send a message if an item doesn't come in for 10 seconds.
But I get an error.
time: 93.144454 exception: FlexScript exception: Invalid item in Conveyor.itemData[] call at MODEL:/PE1>variables/localType/clearTrigger
What is the cause of this error?
How should I handle the error?
anonymous user,
I don't know what is causing the error you are getting. Because when I run your model, I don't get any kind of error. So without being able to duplicate it, I'm at a loss as to what to tell you. It just works on my end. I've saved the model (attached) and am sending it back in case there was something weird when it got transferred.
If your problem still persists, try and give us as much information as you can about what happened, when, time, etc.
Thanks.
This is demonstrated in the attached model where the clear timeout is longer than the time the item is in the conveyor system.
The workaround is to comment out everything in the predefined template that refers to the item.
I'll submit it for review/improvement.photo-eye-error-0_jl.fsm
It's an inadequate trigger but one that the user controls so you can adjust it. Could have been an oversight/assumption that failed. I've submitted it for improvement.
Actually it's just line 4:
//Conveyor.Item conveyorItem = conveyor.itemData[item];
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