Hi, I would like to ask for some help regarding the condition to write for the photo-eye.
What I would like to do is to block the item and stop the motor if the current quantity in the queue reaches 3 boxes.
Hi @Aries Vash ,
You just need to change your condition so it's checking if the Queue content is equal to 3. A condition must return true or false. This stops the motor of the conveyor when Queue content is 3 and then it continues after items are processed
wow thanks, really got confused there I've tried content(Model.find("Queue1")) = 3 and I get error, never thought that it should be ==, may i have a question whats the difference between = & == ?
No worries. Single equal sign (=) is used for assigning values to a variable. Double equal sign (==) is used whenever we are testing a condition, we must use == because it returns a true or false
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