
___________________________________________________________________________________
10
Pin Assignment
This chapter provides the pin assignments for SUNIX Universal PCI
RS-422/485 Multi-Port Communication Board, as well as the pin assignments for
the optional accessories.
RS-422
or
4-Wire RS-485
PIN
DB9M
DB25M
Pin Header
Tx+
2
3
3
Tx-
1
8
1
Rx+
3
2
5
Rx-
4
20
7
GND
5
7
9
2-Wire RS-485
PIN
DB9M
DB25M
Pin Header
Tx+
2
3
3
Tx-
1
8
1
GND
5
7
9