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485DSS3298 Manual
B&B Electronics  --  PO Box 1040  --  Ottawa, IL  61350
PH (815) 433-5100  --  FAX (815) 434-7094
Specifications
Model:
485DSS
Size:  
4.8"L x 2.15"W x 0.9"H
Power:  
+11 to 16 Vdc 75mA
RS-232 Connection: 
DB-25 male (DTE configured)
RS-485 Connection:   Terminal Blocks
Communications:
9600 baud, no parity, 8 data bits, 1 stop bit
Figure 2. Top View of Circuit Board
Port Configuration
The 485DSS has a RS-485/422 port and a RS-232 port. The
RS-485/422 signals are on terminal blocks. Table 1 shows you the
pinouts and Figure 2 shows you the location of the terminal blocks.
The RS-232 signal, in the DTE configuration, connects to a DB25
male connector. Table 2 shows you the RS-232 pinouts.
RS-485/422 Port
The RS-485 port on the 485DSS receives and transmits data to
and from the RS-485 network. The RS-485 port has a balanced
differential line driver and receiver. RS-485 allows up to 32 driver
and receiver pairs to share a two-wire party line network.  This port
will operate on a 4-wire network and is compatible with RS-422
devices. Refer to B&B Electronics’ free RS-422/485 Application Note
for more information.  Refer to Appendix C for cable charts.