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Connect Tech Xtreme/104-Express User Manual
Revision 0.00
13
Table 2: DB-9 Male Pinouts
Pin #
RS-232
RS-422/485
DB-9
Signal
Direction
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
Figure 4: RS-422/485 Wiring Diagram
D
6
1
DB-9 Male
5
9
Xtreme/104-Express
Adapter
RTS +
RTS -
CTS +
CTS -
TxD +
TxD -
RxD +
RxD -
RxD +
TxD +
RxD -
TxD -
RTS -
CTS -
RTS +
CTS +
SR
SR
Xtreme/104-Express
Adapter
RS-485/422
Peripheral
3
1
4
2
5
6
9
7
8
RTS +
RTS -
CTS +
CTS -
TxD +
TxD -
RxD +
RxD -
RxD +
TxD +
RxD -
TxD -
RTS -
CTS -
RTS +
CTS +
SR
SR
BlueStorm/Express Opto
Adapter
RS-422/485
Peripheral
3
4
2
5
6
9
7
8
1
RS-422/485
4 Wire Diagram