04-01-2011 05:24 PM
Hello Group,
I have a few questions concerning the Synchronizing Multiple CompactRIO Chassis totorial (http://zone.ni.com/devzone/cda/tut/p/id/4217).
Can this technique be used with NI9239 modules configured for LabVIEW scan interface and calibration mode?
Figure 7 of the tutorial suggests the cRIO-9215 samples are read immediately after the scan clock goes high. In LabVIEW scan interface mode, I thought the samples from the cRIO-9215 would be at a constant scan rate?
Also in the FPGA portion of the example code, the data samples are written to a FIFO and then read from the FIFO and written again to an output variable. In all applications I have seen the data is written to a FIFO at the FPGA level and then read from the FIFO by the RT controller.
TIA,
- Troy
04-04-2011 10:32 AM
Here is another approach that I personally think is more elegant...