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Connect Tech Xtreme/104 User’s Manual
18 Revision 0.05
Table 4: DB-9 cable connector pinouts
Pin
No.
RS-232
Signal
Direction
RS-485/422
Signal
Direction
1 DCD input
RxD
(+)
input
2 RxD input
RxD
(-)
input
3 TxD output
TxD
(+)
output
4 DTR output
TxD
(-)
output
5
SG
signal ground
SR
signal reference
6 DSR input
CTS
(-) input
7 RTS output
RTS
(+)
output
8 CTS input
CTS
(+)
input
9 RI
input
RTS
(-) output
Male DB-9 Connector
1
5
6
9
4
6
8
10
9
7
5
3
Printed circuit board
2
1
14
16
18
20
19
17
15
13
12
11
24
26
28
30
29
27
25
23
22
21
34
36
38
40
39
37
35
33
32
31
View facing 40 pin connector
Part Number:
CAB8104
Technical Tip:
The red stripe on the CAB8104 cable indicates pin 1 on the 40 pin
header connector.
Please ensure that you terminate the DCD or CTS signals if your
application does not use them. The common way to do this is to
connect DCD to DTR and/or to connect CTS to RTS. Failure to do
so may result in a loss of a performance on your Xtreme/104;
Xtreme/104 RS-232 adapter
.
Ribbon Cable – CAB8104
Red Stripe (Pin #1)
Cable header
Arrow