5
Software Setup
Make sure your software is set to use the same serial COM port that the RS-485
is confi gured to. Refer to
Changing the COM Port Number
in this manual for
details. There are no hardware settings required by the RS-485 Converter. Power
is provided by the USB port. All other settings, such as BAUD rate, are taken
care of by your software. The converter automatically switches between trans-
mit and receive so RTS is not required.
Connecting to the RS-485 Device
Connect the two mini-clips to the RS-485 bus. Following the RS-485 standards,
the black clip is the A connection and the red clip is the B connection.
•
BLACK = A RS-485 Connection
•
RED = B RS-485 Connection
Converter Grounding
The 101-0010 converter does not provide an RS-485 ground terminal. Unless
the other device’s interface is isolated, there is a risk of a ground loop current
that could result in equipment damage. The converter should only be used where
the common mode voltage (ground potential difference between the two inter-
faces) is within the standard RS-485 common mode voltage of +/- 7 volts.
