Db-9 Connector - Digi Connect SP Hardware Reference Manual

D B - 9 C o n n e c t o r

DB-9 Connector

The figure and table provide information on DB-9 pin orientation and pin assignments.
DB-9 Pin Orientation
1 4
Up/On
Down/Off
EIA-232
D i g i C o n n e c t S P H a r d w a r e R e f e r e n c e
*
If switch 4 is up, termination.
If down, no termination.
*
EIA-422/485 EIA-485
Full-Duplex Half-Duplex
Pin 1
Pin 5
Pin 6 Pin 9
*