Com Port; Pin1; Note: Blank = No Connection; Pin - Delta Electronics Network Device DOP-B Quick Start Manual

COM2 Port (Supports Flow Control)

COM Port

PIN1

Note1: Blank = No Connection.
Note2: When COM2 port is used for RS-232 flow control, i.e. RTS and CTS signals are used for flow control,
COM3 port will become incapable of being used.
Note3: When COM2 port is used for RS-422 flow control, please refer to the following COM3 Port signals table
for pin assignments. The signals, RTS+, CTS+, RTS- and CTS- shown in brackets are the signals used
for flow control.
COM3 Port
COM Port

PIN1

Note1: Blank = No Connection.
Note2: When COM2 port is used for RS-422 flow control, please refer to the COM3 Port signals table above
pin assignments
flow control.
Ethernet Interface (LAN)
Ethernet Interface (LAN)

Note: Blank = No Connection.

PIN
1
2
3
4
5
6
7
8
9
PIN
1
2
3
4
5
6
7
8
9
. The signals, RTS+, CTS+, RTS- and CTS- shown in brackets are the signals used for
PIN
1
2
3
4
5
6
7
8
MODE1
RS-232
RXD
TXD

GND

RTS
CTS
MODE1
RS-232
TXD+(RTS+)
RXD
TXD
RXD+(CTS+)
GND
TXD-(RTS-)
RXD-(CTS-)

Contact

Ethernet
TX+
TX-
RX+
RX-
English-5
MODE2
RS-422
TXD+
RXD+
GND
TXD-
RXD-
MODE2
RS-422
GND
MODE3
RS-485
D+
GND
D-
MODE3
RS-485
D+
GND
D-
for