Connecting Rs-422/Rs-485 Device - LG LVS301 Owner's Manual

Connecting RS-422/RS-485 Device

R-
R-
R-
Use these ports to connect PTZ Device or an external device of RS-422/RS-485 format.
R+
R+
RS-422
RS-422 RS-422
R+
RS-422 RS-422
T+
T+
RS-422 device :
Set the dip-switch to RS-422 mode and connect as shown below.
T+
T-
T-
T-
R-
R-
R+
RS-422
R+
RS-422 RS-422
T+
T+
T-
T-
RS-485 device:
Set the dip-switch to RS-485 mode and connect as shown below.
RS-485
RS-485
RS-485 RS-485
(FULL)
RS-485 RS-485
(FULL)
(FULL) (FULL)
(FULL) (FULL)
T+ T- R+ R-
T+ T- T+ T- R+
T+ RS-485 T- T+ T- R+
(FULL)
T+ T- R+ R- TRX-
RS-485
RS-485
(FULL)
(FULL)
T+ T- T+ R+ T- R-
Notes:
• If you set the Termination S/W to ON, you must use the input impedance to 120 Ω.
• Do not use the multiple RS-422/RS-485 device to connect the unit, it may cause the malfunction.
Connections
R-
R-
R+
R+
T+
T+
T-
T-
R-
R+
T+
T-
RS-485
RS-485
RS-485 RS-485
(HALF)
RS-485 RS-485
(HALF)
(HALF) (HALF)
(HALF) (HALF)
TRX-
TRX+
RS-485 HALF
R- R+ R- TRX- TRX-
TRX+ TRX+
RS-485 R- R+ TRX- R- TRX-
TRX+ TRX+
(HALF)
TRX+
RS-485
RS-485
(HALF)
(HALF)
RS-485 FULL
TRX- R+ R-
TRX+ TRX- TRX+
Termination OFF
Termination OFF
Termination ON
Termination ON
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