I have searched but did not find anything on this question.
Do they actually use PLC's for elevator control or do they use some sort of other related device ?
I was on an elevator this weekend and although the button for floor two was pressed once and lit, someone began to press it again, I said that I didn't think that it would make the elevator go to floor two any quicker, "pressing it again and again to make the doors close faster". They informed me that oh yes there were certain elevator controls which responded to the number of times that a particular floor number "input" was pressed.
It just doesn't seem to be right somehow, once an input is pressed and confirmed with a light, that should be it.
Do they actually use PLC's for elevator control or do they use some sort of other related device ?
I was on an elevator this weekend and although the button for floor two was pressed once and lit, someone began to press it again, I said that I didn't think that it would make the elevator go to floor two any quicker, "pressing it again and again to make the doors close faster". They informed me that oh yes there were certain elevator controls which responded to the number of times that a particular floor number "input" was pressed.
It just doesn't seem to be right somehow, once an input is pressed and confirmed with a light, that should be it.