Quote:
Originally Posted by garyk
If you're connecting your computer directly to the cRIO, you must use a crossover LAN cable, per the instructions in the "Getting started with the <year> control system." What's confusing is that connectivity can be established using a "regular" (not crossover) cable, but the imaging won't complete. I saw this about a week ago (Dec. 2013) preparing for the 2014 season, with 668's 8-slot cRIO.
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We saw the same thing last year, but only on one computer. After imaging, both the crossover and the "regular" cables both work well. From my experience, the reimaging issues come up when the cRIO doesn't reconnect with the imaging tool fast enough. Any modern computer will have an autodetect feature (auto MDIX) that detects if it needs to switch the tx/rx pins, so you only really need a crossover cable to connect the camera and cRIO, which both don't have the auto MDIX.
My thought is that it takes a few seconds for the ethernet controller to decide that it needs to do the switch, so the imaging tool times out before the cRIO can be imaged, but I'm not really sure. We had some pretty extreme imaging issues in 2012, and solved them by using a random desktop computer we had laying around, so it seems like the computer being used might have an effect on the imaging process.