XPS-E
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6.2 Serial Interface
Connector Assignment RS232
The connection is realised via a 9-pin D-SUB plug.
Pin
Signal FNI
CCITT
Function
Direction
1
DCD
M5
109
Data Carrier Detect
I
2
RxD
D2
104
Receive Data
I
3
TxD
D1
103
Transmit Data
O
4
DTR
S1
108.2
Data Terminal Ready
O
5
GND
E2
102
Ground
-
6
DSR
M1
107
Data Set Ready
I
7
RTS
S2
105
Request to Send
O
8
CTS
M2
106
Clear To Send
I
9
-
-
-
Not connected
-
Table 14:
Pin Assignment RS232 Interface
O
=
Output
I
=
Input
Cabling RS232
RS232-Cabling without
Hardware Handshake
Illustration 11:
RS232 Cabling without Hardware Handshake
Connector Assignment and Cabling