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485DSS3298 Manual
B&B Electronics  --  PO Box 1040  --  Ottawa, IL  61350
PH (815) 433-5100  --  FAX (815) 434-7094
Figure 3.  RS-485 Wiring Diagram
4-Wire Mode
To configure the 485DSS for RS-485 or 422 four-wire mode,
place the jumper in the 4W position.  Refer to Figure 4 for
connecting information and Figure 2 for the jumper location.  In this
position on a 4-wire network the Host and the RS-232 device can
communicate in full duplex.  CAUTION:  Data loss may occur if the
Host sends 485DSS commands while the host is receiving data
from the network!