sanyc Posted April 6, 2017 Report Share Posted April 6, 2017 I have problems communicating with the JZ20-JR31. I am using a usb connection (Port COM 10). A serial connection is not an option for me at the moment. So, I manage to establish connection via Controller --> M90 OPLC Settings --> PC Communication Port Settings --> Get Version. Then when I try to download the program it looses connection. 15 minutes ago I was able to download the program but it would still loose connection every 2-3 seconds or so. Now It won't even connect. I tried running U90 as administrator, Nothing. I tried changing USB ports, Nothing. What else should I try? Edit: I am using windows 7. Quote Link to comment Share on other sites More sharing options...
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