Delta DOP-B - Serial Communication Pin Definitions; COM1 Port (Supports Flow Control); COM2 Port (Supports Flow Control); COM3 Port

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Pin Definition of Serial Communication
DOP-B07S(E)415／DOP-B07PS415 / DOP-B08S(E)515 / DOP-B10S(E)615 Series
COM1 Port (Supports Flow Control)
COM Port PIN
Contact
RS-232
1
2
RXD
3
TXD
4
5
GND
6
7
RTS
8
CTS
9
Note: Blank = No Connection.
COM2 Port (Supports Flow Control)
COM Port PIN
MODE1
MODE2
MODE3
RS-232
RS-422
RS-485
1
TXD+
D+
2
RXD
3
TXD
4
RXD+
5
GND
GND
GND
6
TXD-
D-
7
RTS
8
CTS
9
RXD-
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 PIN
MODE1
MODE2
MODE3
RS-232
RS-422
RS-485
1
TXD+(RTS+)
D+
2
RXD
3
TXD
4
RXD+(CTS+)
5
GND
GND
GND
6
TXD-(RTS-)
D-
7
8
9
RXD-(CTS-)
Note1: Blank = No Connection.
Note2: When COM2 port is used for RS-422 flow control, please refer to the COM3 Port signals table above
for pin assignments. The signals, RTS+, CTS+, RTS- and CTS- shown in brackets are the signals used
for flow control.
PIN1
PIN1
PIN1