How to setup USB 6009 default level

[RÎÆè|]

I want to use NI USB 6009 digital port  to control an external relay, but when i turn on the computer or connect this device with computer, the digital port will be high level and the external relay will on.
 
How can I setup the default value of digital port to low level when i turn on my computer or connect the card to my computer? 

[johnsold]

From the USB-6008-9 User Guide: "At system startup and reset, the hardware sets all DIO lines to high-impedance inputs. The DAQ device does not drive the signal high orlow. Each line has a weak pull-up resistor connected to it." Page 18.On page 17 it shows and the specifications on page 21 list a 4700 ohm resistor to +5 V.Is this enough to turn on your relay?The USB 6009 does not have the capability to program startup modes. Some of the more expensive devices do have this capability.Lynn

[RÎÆè|]

OH, my god.
 
 
How can i do then?
 
 
change another card?

[johnsold]

Computer problems. I have not been able to get to the Forum. Some boards do have programmable power on states. I do not know from memory which ones those are.Other things you might try: Configure your relay so that the line must be pulled to ground to energize the relay. connect the positive end of the coil to +5 volts and the negative end to the Digital Out.OR add a transistor inverter between the Digital Out and the coil. Configure the circuit so that the internal pull up of the 6009 keeps the transistor off so the relay is off.Lynn