Elapsed time Trouble

[BT778]

I am trying to essentially turn on an led for a given amount of seconds and then turn it off. 

Two problems i am faced with, 

I. on the DIO, the LED is always on, as soon as i make the connection from daq to the board. How can i prevent this, if i can. 

II. after the specified amount of time, the LED does not turn off. Im not suring if im making the right connections on the VI. 

Please find attached the VI. 

[apok]

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@BT778 wrote:

I am trying to essentially turn on an led for a given amount of seconds and then turn it off. 

Two problems i am faced with, 

I. on the DIO, the LED is always on, as soon as i make the connection from daq to the board. How can i prevent this, if i can. 

II. after the specified amount of time, the LED does not turn off. Im not suring if im making the right connections on the VI. 

Please find attached the VI. 

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assuming your Daq DIO is an open collector with internal pull up resistor, that is why you see a Hi at start...

depends on how you hooked the DO to a led(anode/cathode)? connected as cathode(neg turns led on) or as anode(pos is on)