I have the attached vi that measures period. My understanding is that the NI 9401 can measure period for up to 4 encoders at once. Do I need one DAQ sequence per encoder, (e.g. the attached vi should measure period for 2 encoders simultaneously)? I want to run up to 16 encoders, so, do I need to copy/paste this code 16 times in order to collect period data for 16 encoders simultaneously?
I am using cDAQ9174 and NI 9401. My understanding is that the 9401 can measure up to 4 encoder signals. If I put a second NI 9401 into the cDAQ9174, can I measure 8, or does the cDAQ9174 limit the number of counters that can be accessed independently? If I have to use two cDAQ9174's, plugged into one PC, does Labview recognize the eight slots as unique, e.g. 1-8, instead of two sets of 1-4 for the addressing of the channels?
Any generic advice on measuring many encoders (period) simultaneously is welcome.
Thanks,
Dave