回复： Comtrade logging and reading

[aks3517]

Hi,

I am trying to implement example project  "COMTRADE Waveform Logging VI: labview\examples\Electrical Power\COMTRADE Logging". I have cRIO 9076 with 9225  and 9227 modules. Example VI only writes voltage waveform to .dat file but I wanted to include current waveform as well. I am new to labview and not sure where to go about this. COMTRADE logging (FPGA).vi is sending data (FIFO) from 9225  and 9227 modules and I think only (COMTRADE waveform logging.vi needs to be modified to include writing current waveform in .dat and .cfg files.

Entire example project can be found:

Find Examples>Toolkit and Modules>Electric Power Suite> File Input and Output> COMTRADE logging and reading.lvproj

Any help will be greately appreciated.

[Yifan.Liu]

Hi,

If you want to log current waveforms into .cfg and .dat files, you need to modifiy the COMTRADE Waveform Logging.vi:

1. Configure 4 more current channels' information in the control analog channel info:

2. Build the voltage and current waveforms into 1-D waveform array, and then bundle it with the digital data as the element for the queue: