from a automatic power factor controller i have to collect some data to my computer. there is a software of that controller which i have installed . we can get data out of the device by rs485 protocol . since my computer has got only rs232 serial port, i used a 485 to 232 converter . but still iam not able to get data
I connected A, B in the port provided in the device to A, B of converter, also i provided working voltage for the converter. the error indicated is"communication error" in rs232 , i used direct connection ie 2 to 2 and 3 to 3
what would be the possible reasons