This content is not available in your preferred language.

The content is shown in another available language. Your browser may include features that can help translate the text.

Programming the FPGA on an NI EtherCAT Expansion Chassis

Updated Nov 29, 2017

Reported In

Hardware

  • NI-9144
  • NI-9145

Software

  • LabVIEW FPGA Module
  • LabVIEW Real-Time Module

Issue Details

I have a CompactRIO chassis with a Real-Time controller and a NI 9144/5 EtherCAT Chassis.  I am using the FPGA on my CompactRIO but also want to use the FPGA on the NI 9144/5.  Can I do this?

Solution

LabVIEW 2009 and Later
Yes, you can use the NI 9144/5 EtherCAT Expansion Chassis in FPGA mode as well as Scan Interface mode. Using FPGA mode on the NI 9144/5 allows all modules compatible with the CompactRIO to also be used in the NI 9144/5.

In order to transfer data from the FPGA to the master's real-time processor, you must write the data to user defined variables. Review the Programming EtherCAT I/O with FPGA Intelligence White Paper for more information on synchronizing data between a slave's FPGA and the master's real-time processor.


Before LabVIEW 2009
The NI 9144/5 can only be used with the CompactRIO Scan Interface.
 

Additional Information

NI-9144 and NI-9145 are abbreviated as NI 9144/5 in this article.

WAS THIS ARTICLE HELPFUL?

Not Helpful