Before seeing this post thats what I did and it seems to work. Is there any good tutorials on the website for using (when and where ) any of the vis from the DAQmx pallet? I was using the help and some of the examples but there were so many links w the help I forgot my original question. None of the daq mx examples were what I wanted. When i set my timing daqmx vi to continuous how much data is collected and at what rate?? the full sample rate of the card and its read ( buffered) until I use the read.vi?? For proprietary reasons I can't post code so i'll try and explain. I want to start reading an analog ch on a pxi 6230. Do some stuff in a state machine all the while monitoring/collecting data on daq. The purpose of reading is to make sure the ch I was reading didn't go above 100 mv at any time. I have 6-8 state machines. I thought I could continuously read the daq ch ( in parallel w the stuff I'm doing in the state machines) then analyze the data in my final ( END) state.