Serial Communication Board with 2/4/8 RS-232/422/485 Ports
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PCIe-S118 Card (RS-232 Wiring):
Step 2: Short the
RxD
,
TxD
and
GND
pins of Port0 and
Port1.
PCIe-S148 Card (RS-485 Wiring):
Step 2: Short
Port0 Data+
to
Port1 Data+
,
Port0 Data-
to
Port1 Data-
, and
Port0 GND
to
Port1 GND
.
Note:
For detailed information regarding wiring and pin assignments for the RS-
232/422/485, refer to Section 2.2 Wiring Notes for RS-232/422/485 and
Pin Assignment
Pin No.
Pin No.
Pin Assignment
TxD0
3
2
RxD1
RxD0
2
3
TxD1
GND
5
5
GND
Pin Assignment
Pin No.
Pin No.
Pin Assignment
Data0-
1
1
Data1-
Data0+
2
2
Data1+
GND
5
5
GND