1.
Select
“ Start/Settings/Control Panel “
and double click the
“system
” icon.
2. Click the
“Hardware”
tab and then click the
“Device Manager”
button.
3. Check if the COM ports of VXC card are listed correctly.
5
Pin Assignment
VXC-114U Pin Assignment and Wiring
Pin
Assignment
Name
Terminal
Pin
No.
Assignment
Name
RS-232 Null Modem Cable Wiring
N.C. 01
20 RI3
DCD3 02
21 DTR3
GND 03
22 DSR3
CTS3 04
23 RTS3
RxD3 05
24 TxD3
RI4 06
25 DCD4
DTR4 07
26 GND
DSR4 08
27 CTS4
RTS4 09
28 RxD4
TxD4 10
29 RI2
DCD2 11
30 DTR2
GND 12
31 DSR2
CTS2 13
32 RTS2
RxD2 14
33 TxD2
RI1 15
34 DCD1
DTR1 16
35 GND
DSR1 17
36 CTS1
RTS1 18
37 RxD1
TxD1 19
System 1
System 2
TX
RX
RX
TX
RTS
DCD
CTS
GND
GND
DSR
DTR
RTS
DCD
CTS
DTR
DSR
VXC-114U/144U/144iU
Series
Quick Start Guide --- 4
