Atop SE59XX-SDK, User Manual, Page: 38 / 75

SE59XX-SDK
Software development Kit
User Manual
V1.2
3.5 Serial Pin Assignments
3.5.1 SE5901 Pin Assignments for Serial Interfaces
DB9 to RS
-
232
/
RS-422/RS
-
485 connectors
Figure 3.1 DB9 Pin Number
Table 3.4 SE5901 Pin Assignment for DB9 to RS - 232 / RS-422/RS - 485 Connector
Pin#
RS
-
232
Full Duplex
RS-422/4-Wire RS-485
Full Duplex
2-Wire RS
-
485
Half Duplex
1 DCD N/A N / A
2 RxD TXD+ N
/
A
3 TxD RXD+ Data +
4 DTR N/A N
/
A
5 SG ) Signal Ground ( SG (Signal Ground) SG ) Signal Ground (
6 DSR N/A N
/
A
7 RTS RXD- Data -
8 CTS TXD- N
/
A
9 RI N/A N / A
1 x 5-pin (Male Terminal Block) for RS-232/RS-422/RS485 Connector
Figure 3.2 TB5 Pin Number
Table 3.5 SE5901 Pin Assignment for TB5 to RS-232/RS-422/RS-485 Connector
Pin#
RS
-
232
Full Duplex
RS-422/4-Wire RS-485
Full Duplex
2-Wire RS
-
485
Half Duplex
1 RxD T+ NC
2 CTS T- NC
3 TxD R+ Data
+
4 RTS R- Data-
5 SG
)
Signal Ground
(
SG (Signal Ground) SG
)
Signal Ground
(