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The SBC-410 offers two serial ports: one RS-232 and one RS-
232/422/485. Using the BIOS Peripheral Setup program, you can
select the address for each port or disable it.
The card mounting bracket has two serial port connectors. The
DB-9 connector on the top of the bracket is COMA, the RS-232
serial port. The DB-9 connector on the bottom of the bracket is
COMB, the RS-232/422/485 serial port.
RS-232 serial ports are widely used for external input/output
devices. The RS-422 and RS-485, however, are popular for
industrial and laboratory applications because they offer high
noise resistance and long range communication (up to 4000 ft,
1200 m). The RS-422 is commnly used for two-way communica-
tion between two devices, where as RS-485 is used for communi-
cation between a single master and a network of slave modules.
COMA is the RS-232 serial port, and COMB can function as an
RS-232, RS-422, or RS-485, depending on the jumper settings
from JP12, JP13, JP14, JP15 and JP16. To select the desired
serial port type for COMB, adjust JP12, JP13, JP14, JP15, and
JP16:
RS-232*
RS-422
RS-485
*default
26 SBC-410 User's Manual
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
JP12
1
5
JP12
1
5
JP12
1
5
1
3
1
3
1
3
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