thien Posted August 25, 2010 Report Share Posted August 25, 2010 Hello everybody. I have an old V120-12-R1. When I was downloading an OS into the controller I got a power suply disconnection. Now I can not connect to the controller any more by the serial communication RS232. Is there any one know how I can resolve the problem? Thanks beforhand. Thien Quote Link to comment Share on other sites More sharing options...
Jas Posted August 25, 2010 Report Share Posted August 25, 2010 You can try putting the PLC into bootstrap mode and reinstalling the OS. To enter bootstrap: - With the power off, hold down the <I> + <ESC> keys - Plug power in with these keys held - Controller will now be in bootstrap mode - Make sure to communicate with the PLC at max baud rate(57k) and physical COM port 1 - Reinstall OS Quote Link to comment Share on other sites More sharing options...
thien Posted August 25, 2010 Author Report Share Posted August 25, 2010 Thank you. It was a quick response. It works again. Best regards. Thien Quote Link to comment Share on other sites More sharing options...
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