willy Posted September 22, 2011 Report Share Posted September 22, 2011 Hello, I'm new with the unitronix PLC's and have a Jazz JZ10-11-R16 for testing. I use a laptop where I installed the U90 ladder softwar. I installed and USB to Com converter and the pc find this device ad comport 3 I have set comport 3 as described in the manual : baudrate 9600, parity even, stopbits 1, data bits 7, flowcontrol none I also set these values in the operating system of U90 and in the M90 OPLC serttings including comportnumber. when I try to communicate with the jazz in the window at the bottom of th screen shows : Synchronizing Com Ports, after 3 try's of synchronizing it switched comports and try to synchronize. After that I get the messige : <Communication could not be establised due to one of the following: - Cable connections are not secure - Time out is to short - Incorrect communication settings What do I do wrong ???? Quote Link to comment Share on other sites More sharing options...
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