Hi all,
I want to log some signals from a machine here in the workshop. This machine has 4 digital signals and 2 analog signals. I want to log these signals at the same time with a frequency of 100 Hz. All the signals must be written in one log file. I also want to see what happens therefore I use the front panel with booleans and graphs.
First of all I've tried to do this with DAQassistant. For the analog signals this works out fine, but the digital signals didn't work the way I wanted. I don’t know how to split the signal, so I can control the booleans. Searching on this forum didn’t help with finding out how to do that. There was something else on this forum that had helped me. I also could log the digital signals with the help of the DAQmx blocks. I have tried this first with one digital signal, and this worked fine. So I copied this 3 times for the other digital signals, but then I get the fault that the start task VI is reserved.
At that point I was searching how to solve this problem. I found that it is possible to make a task with MAX or simply choose more channels at the input. When I was running this VI, I get the fault that there are 4 lines in the channel and 1 line in data. I know don't know how to solve this problem.
Further I experienced that the DAQmx blocks and the DAQassistant could not be put in one VI. This give troubles with the DAQassistant. I get the fault code:
Attempted to read samples that are no longer available. The requested sample was previously available, but has since been overwritten. Increasing the buffer size, reading the data more frequently, or specifying a fixed number of samples to read instead of reading all available samples might correct the problem.
When I delete the DAQmx blocks then the problem is solved.
See the attachment for the VI's. Anybody has a solution?
