RECLOSER CONTROL EVRC2A-N6,NT http://www.entecene.co.kr
280
ENHANCED
TECHNOLOGY
Table 13-7. PORT3(RS-232/RS485) Pin Description
Pin(RS-232) Signal Description Pin(RS-485) Description
1 DCD Data Carrier Detect 1 RS485+
2 RXD Receive Data(IN) 2 RS485-
3 TXD Transmit Data(OUT) 3 SG (Cable Shield)
4 DTR Data Terminal Ready(OUT) 4 485 ON
5 GND Ground 5 485 ON
6 DSR Data Set Ready(IN)
7 RTS Request To Send(OUT)
8 CTS Clear To Send(IN)
9 N/C No Connection
※
. Note)
①
PORT3 provides RS-485 communication and uses Digital power and insulated
power of CPU Part for surge protection. Each terminal is Anti-Over-voltage.
②
To minimize the noise of communication line, Terminal Resistor is used in the both
end of the line and Twisted Shied Cable is advisable for connecting cable.
③
In order to use RS-485, the Pin4 and Pin5 of RS485 Port should be connected.
3) RJ-45 Pin Functions for Port4
Table 13-8. RJ-45Pin Functions for Port4
Pin Port4 Pin Port4
i
ure 13-23
R
-45
or
1
TX+
6 N/C
2
TX-
7 N/C
3
RX+
8 N/C
4
RX-
Purpose IEC60870-5-104
5 N/C
To Next Page
Loading...