I am having a similar problem. I have the correct COM port selected. I was able to update the OS from the Controller>Operating System menu but cannot download my project. When I go to Controller>M90 OPLC Settings to verify, I get a "Communications could not be established..." error. I am using a USB-to-RS232 adapter (COM8) and Windows 7.
JAZZ USB-problem
in Jazz, M91 PLCs and U90Ladder
Posted
I am having a similar problem. I have the correct COM port selected. I was able to update the OS from the Controller>Operating System menu but cannot download my project. When I go to Controller>M90 OPLC Settings to verify, I get a "Communications could not be established..." error. I am using a USB-to-RS232 adapter (COM8) and Windows 7.