Frequently Asked Questions

A: The WF 3144 and WF 3154 modules uses a 10-Pos Plug. You should connect a Terminal Block for 10-Pos Plug to the module. This Terminal block is included together with the module when shipped from WireFlow.

The WF 3132 uses a standard 37-pin Dsub connector – type Plug. You should connect a 37-pin Dsub connector – type Receptacle to the module. This Receptacle is NOT included with the module when shipped from WireFlow.

Until then there exist a work-around for the issue that is relatively simple:

1.  Copy the file resource.xml and overwrite the existing one in \Targets\NI\FPGA\ECat\NI 9144
2.  Exit LabVIEW and navigate to \Targets\NI\FPGA\bin
3. Run lvfpga_make_resource_cache.exe

A: The FPGA usage of a specific software and hardware combination is affected by multiple factors such as; FPGA type and size, compilation options, the random starting point for FPGA code placement etc.
Hence, it is impossible to derive an exact figure that defines the FPGA usage of a specific C series module. For customers that are uncertain on whether their application will fit on a specific FPGA with a WireFlow C series module it is recommended to make a test-build. Note that no hardware is needed to make a test build.
For more details, please see AB0005-104 AN16 FPGA Resource Usage for WF C Series modules.

A: No, there is a set of multiplexers and ADC’s in the hardware that scans the input channels. Time from sampling the first channel to sampling the last channel is 814 µs. After making such a measurement the device must do some preparations before doing the next set of samples. The complete sampling sequence can be repeated with a maximum rate of 30 ms which is the maximum system sampling rate.

A: No, there is is a set of four multiplexers and ADC’s in the hardware that scans the inputs in groups of four with an offset of six channels. First [C0,C6,C12,C18] are sampled simultaneously, followed by [C1,C7,C13,C19], and so on. Time from sampling the first channel to sampling the last channel is 814 μs. After making such a measurement the device must do some preparations before doing the next set of samples. The complete sampling sequence can be repeated with a maximum rate of 4.3ms which is the maximum system sampling rate.

A: If you don’t have enough battery cells to fill all the channels of the module you will have to put jumpers between each unconnected channel. E.g:
If you have 21 battery cells and have filled them from COM-C20, you will have to put jumpers between all of the remaining unconnected channels (C20-C21, C21-C22, C22-C23)