No, NI DAQ (or PXI(e)) devices are not SCPI compliant. Instead, we have developed NI-DAQmx™
which is the driver needed to communicate with our NI hardware. The NI-DAQmx driver can be used to program in LabVIEW, LabWindows/CVI, and Measurement Studio for Visual Studio .NET.
As for SMU devices, they also do not support SCPI commands, and instead, the NI-DCPower
driver API should be used for communicating with such devices.