SSE232-LE User’s Manual
Exemys
PC
RxD 2
TxD 3
GND 5
RTS 7
CTS 8
DSR 6
DCD 1
DTR 4
3 Rx
2 TX
7 GND
4 RTS
5 CTS
6 DSR
8 DCD
20 DTR
SSE232-LE
DB9 Female
DTE
DB25 Female
DCE
Figure 3 - COM A to PC cable
2.2.2 RS-485 and RS-422 Connection
Use terminals TRX+ and TRX- to connect SSE232-LE to a RS485 network. And use terminals
TRX+, TRX-, RX+, RX- to connect SSE232-LE to a RS422 network.
TR+ (14)
TR- (15)
Data
+
Data
-
Data +
Data -
Data
+
Data
-
SSE232-LE
RS-485
TR+ (14)
TR- (15)
R+ (21)
R- (22)
RS-422
R +
R -
T +
T -
R+
R-
T+
T-
R+
R-
T+
T-
SSE232-LE
Figure 4 - RS485 & RS422 Networks
www.exemys.com Rev.
1.0.3
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