12
5 DirectPort UPCI4B
5.1 DB9 Pin Assignments
5.2 Jumper Settings
5.2.1 RS422/RS485 Selection
422: Set RS422 Interface
485: Set RS485 Interface
1
2
3
4
5
6
7
8
9
TRXD-
RS485
DB9 Male
TRXD+
GND
1
2
3
4
5
6
7
8
9
RXD-
TXD-
RS422
DB9 Male
RXD+
TXD+
GND
INTERFACE
422
485
INTERFACE
422
485