
Compax3 device description
26
I11 T11 192-120101 N6 - March 2004
3.1.8.
RS232 / RS485 interface (plug X10)
Interface selectable by contact functions assignment of X10/1:
X10/1=0V RS232
X10/1=5V RS485
RS232
PIN
X10
RS232 (Sub D)
1
(Enable RS232) 0V
2
RxD
3
TxD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
+5V
RS485 2-wire
PIN
X10
RS485 two wire (Sub D)
Pin 1 and 9 jumpered externally
1
Enable RS485 (+5V)
2
res.
3
TxD_RxD/
4
res.
5
GND
6
res.
7
TxD_RxD
8
res.
9
+5V
RS485 4-wire
PIN
X10
RS485 four wire (Sub D)
Pin 1 and 9 jumpered externally
1
Enable RS485 (+5V)
2
RxD
3
TxD/
4
res.
5
GND
6
res.
7
TxD
8
RxD/
9
+5V