Hello, Can you elaborate what you mean by the system is lost?
Ben has suggested a good idea of posting the code in question. It would also be helpful to know which version of LabVIEW you are using and which serial VIs you are using. His clarification of the timeout for the serial read is also a good suggestion. You mention that you have a 100ms wait statement. Is this in-between when you write the command and read the response? Sometimes the hardware needs a small amount of time to respond to the command. Putting a small delay between writing the command and reading the response allows the instrument to respond. If you have this wait statement here already, try increasing the wait time. Another option is to add a call to the "VISA Bytes at Serial Port" property node. This will allow you to check if data has been returned from the device yet or if there is an error with the command you sent. Try incrementing the wait time before reading a response and checking how many bytes are at the serial port. If they do not fix the problem, please post all or a portion of your code so we can get a better idea of the problem. Grant M. National Instruments
