LG RU-42PZ61/71 - Manual (Page 36)

External Control Device Setup
External Control Device Setup
Connect the RS-232C input jack to an external control device (such as a computer or an A/V control system)
and control the Monitor’s functions externally.
Connect the serial port of the control device to the RS-232C jack on the Monitor back panel.
RS-232C connection cables are not supplied with the Monitor.
RS-232C Setup
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Type of Connector; D-Sub 9-Pin Male
No. Pin name
1 No connection
2 RXD (Receive data)
3 TXD (Transmit data)
4 DTR (DTE side ready)
5 GND
6 DSR (DCE side ready)
7 RTS (Ready to send)
8 CTS (Clear to send)
9 No Connection
RS-232C Configurations
RXD
TXD
GND
DTR
DSR
RTS
CTS
7-Wire Configurations
(Standard RS-232C cable)
PC PDP
TXD
RXD
GND
DSR
DTR
CTS
RTS
3-Wire Configurations
(Not standard)
PC
RXD
TXD
GND
DTR
DSR
RTS
CTS
PDP
TXD
RXD
GND
DTR
DSR
RTS
CTS
D-Sub 9 D-Sub 9 D-Sub 9 D-Sub 9
36 Plasma TV