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Have problem with downloading the FPGA bitfile of the ethercat expansion chassis

Hi all,

I'm using a NI 9025 cRIO communicating with 4 NI 9144 ethercat chassis. The 9144 chassis are working on hybrid mode. When I build the FPGA VI of the ethercats, download them everything is OK. But when I want to download the same bitfile again (which is already built), it asks me to build it again (the buiding process takes about 1 hour). If I don't build it again the code doesn't work properly. I'll appreciate if anyone can help.



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