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2 Installation
Instrument
Instrument
Function
RxD (I/P)
TxD (O/P)
GND
CTS (I/P)
RTS (O/P)
Pulled
high
internally
Not
connected
Pulled
high
internally
Equipment
chassis
Handshaking connections
Software handshaking use: TXD, RXD and GND.
Hardware handshaking use: TXD, RXD, GND, CTS, RTS and DTR.
K0470 Revision A
Control Line
Connector
Signal
9-way
Direction
D-type
Pin No.
3
2
5
7
8
1
4
6
Connector
shell
Table 2-1, RS232 Connections
RS232
Terminology
9-way
D-type
Pin No.
TxD
RxD
GND
RTS
CTS
RLSD
(DCD)
DTR
DSR
DCE Ready
Cable Screen
2 - 12
Computer/Printer
Connector Type
25-way
D-type
Pin No.
3
2
2
3
5
7
7
4
8
5
1
8
4
20
6
6
-
1
[EN] English
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