User Manual

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2.4 Back Panel Interfaces
Back Panel Details: 1x 5PIN crimping terminal interface,1 x RS232 interface,1xDC-12V power socket，3
x indicator lights as picture below：
2.5 Functional number description
Number
Label
Physical interface
Description
①
RS-422
Control output
（Ta,Tb,Ra,Rb）
1. （Ta）to connect RS485+,（Tb）to connect RS485-
2. to connect RS422 Bus；（Ta）to connect RXD IN-，（Tb）
to connect RXD IN+,（Ra）to connect TXD IN-,（Rb）to
connect TXD IN+
②
Ground
Control line to
ground（G）
Signal control line to ground.
③
PW
Power indicator
The light will always be red when keybaord is working.
④
TXD
Sending data
indicator
The light will flicker in green when sending data
⑤
RXD
Receiving data
indicator
The light will flicker in green when receiving data.
⑥
DC-12V
Power input
DC12V power input