Are you communicating with an external device? If so, how so? Serial? GPIB? TCP? CAN? USB? If not with an external device, what then? What driver software are you using? What versions of that driver software? What version of LabVIEW? What troubleshooting have you done? Have you done a spy capture to catch the error? Is there an error code? If so, what? We need more information.
