Connectors/pinouts, Table 1: db-25 female pinouts (2 port connector) – Connect Tech BlueStorm Multi-port Serial Adapter User Manual
Page 10
BlueStorm/LP Installation Guide, Connect Tech Inc.
10 Revision 0.05
Connectors/Pinouts
Table 1: DB-25 Female Pinouts (2 port connector)
Pin
No.
Port
No.
RS-232
Signal
Signal
Direction
RS-422/485
Signal
Signal
Direction
1 2 SG
signal
gnd.
SR
signal
ref.
2 1 TXD
output
TXD-
output
3 1 RXD
input
TXD+
output
4 1 RTS
output
RTS-
output
5 1 CTS
input
RTS+
output
6 1 DSR
input
CTS-
input
7 1 SG
signal
gnd.
SR
signal
ref.
8 1 DCD
input
RXD+
input
9 2 TXD
output
TXD-
output
10 2 RXD
input
TXD+
output
11 2 RTS
output
RTS-
output
12 2 CTS
input
RTS+
output
13 2 DSR
input
CTS-
input
14
NC
no connect
NC
no connect
15
NC
no connect
NC
no connect
16
NC
no connect
NC
no connect
17
NC
no connect
NC
no connect
18
NC
no connect
NC
no connect
19 2 DTR
output
RXD-
input
20 1 DTR
output
RXD-
input
21
NC
no connect
NC
no connect
22 1 RI
input
CTS+
input
23 2 RI
input
CTS+
input
24
NC
no connect
NC
no connect
25 2 DCD
input
RXD+
input
Cable CB002 sends the signals to two DB-9 male connectors. See
for pinout details.
NOTE: This is not the pinout of DB-25 cable CB007. See
for pinout details.