I cannot programmically start a DAQmx task on an RT target. The PXI-8140RT controller hangs on either the DAQmx Start Task.vi, DAQmx Read.vi, or the DAQmx Create Timing Source.vi, depending on the level of complexity I try to use. Any suggestions on what would cause this?
The vi running on the target is based upon the wizard created target-multi rate-variables-fileIO.vi. I cannot stop the vi once it hangs; I can only close it. I have to restart the controller to reestablish communication. I have tried DAQmx tasks created using MAX, created programmically, and created from a front panel task control. The tasks test ok using the MAX or the DAQ Assistant. For now I am trying to measure one RTD channel.
The RT system consists of the PXI-8140RT, a PXI-6259 M-series controlling a SCXI chassis, and the SCXI-1102B and SCXI-1581 pair capable of measuring 32 RTD's. There are two other modules in the SCXI chassis which aren't being used yet; a SCXI-1162HV and SCXI-1163-R. The target and host are running LV Real-Time 8.01 and NI-VISA 3.5. The host has NI-DAQmx 8.0.1f while the target has V8.0.0, apparently the lastest available.
