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JP6：
(2.0mm Pitch 2x3 Pin Header), COM4 setting jumper, pin 1~6 are used to select
signal out of pin 9 of COM4 port.
JP6 Pin#
Close 1-2
Close 3-4
Close 5-6
COM4：
(Type DB9), serial port, standard DB9 serial port is provided to make a direct
connection to serial devices. COM4 port is controlled by pins No.1~6 of JP6,
select output Signal RI or 5V or 12v, for details, please refer to description of
JP6.
Pin#
1
2
3
4
5
6
7
8
9
COM_6（option）：
(2.0mm Pitch 2X5 Pin Header), COM4 Port, up to one standard RS232 port are
provided. They can be used directly via COM cable connection.
Signal Name
DCD
TXD
RI (Ring Indicator) (default)
COM4 Pin9=+5V (option)
COM4 Pin9=+12V (option)
Signal Name
DCD# (Data Carrier Detect)
RXD (Received Data)
TXD (Transmit Data)
DTR (Data Terminal Ready)
Ground
DSR (Data Set Ready)
RTS (Request To Send)
CTS (Clear To Send)
JP6 Setting:
Pin1-2: RI (Ring Indicator)
Pin3-4 : 5V Standby power (option)
Pin5-6: 12V Standby power (option)
Pin#
Pin#
1
2
3
4
Function
(default)
Signal Name
RXD
DTR
48
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