01-05-2010 11:48 AM
I am trying to read from a test setup via a RS-485 serial port using my laptop's USB port. To accomplish this, a serial cable (DB9) from the device is connected to a RS485-RS232 converter, the output of which is connected to a USB-RS232 converter, which in turn is connected to my computer's USB port.
I still cant read from the device hence the timeout error. Is there anything I am doing wrong? (Please note that I am fairly new at this)
Thanks!
solasoy
01-05-2010 12:37 PM
There could be a large number of things wrong. You could have the wrong cable type, the wrong com parameters, sending the wrong command, or not sending a termination character after the command.
I would suggest you double check all of these and do your initial testing with a program such as Hyperterminal. If you have access to an RS-232 breakout box, that can help you check the cable.