How to auto ON and OFF Digital output channels?

[Drams]

i am using DAQ PCI 6280 AND BNC 2021 i am trying to control relays continually simultaneously. Please i need help.For example i want all of the digital out put to be on and off every 100ms.

[Drams]

pls guys

[altenbach]

A digital output cannot be on and off, it can only be on or off.

To have them switch automatically, you need to remove the controls and have the code generate the values automatically at a given time interval. Sorry, I don't have DAQmx installed, so I cannot look at your express VIs, but wouldn't it make more sense to create a boolean array out of all controls and use a single instance of the express VI?