Acnodes PC 8719 - Manual (Page 21)

JP1 Pin# Function
Close 1-2 COM2 RI (Ring Indicator) (default)
Close 3-4 COM2 Pin9=+5V (option)
Close 5-6 COM2 Pin9=+12V (option)
24. COM2:
(Type DB9), Rear serial port, standard DB9 Male serial port is provided to make a direct
connection to serial devices.
Pin# Signal Name
1 DCD# (Data Carrier Detect)
2 RXD (Received Data)
3 TXD (Transmit Data)
4 DTR (Data Terminal Ready)
5 Ground
6 DSR (Data Set Ready)
7 RTS (Request To Send)
8 CTS (Clear To Send)
9 JP2 select Setting (RI/5V/12V)
25. COM5 :
(2.0mm Pitch 2X5 Pin Header),COM5 Port, standard RS232 ports are provided. They can be used
directly via COM cable connection.
Signal Name Pin# Pin# Signal Name
DCD 1 2 RXD
TXD 3 4 DTR
Ground 5 6 DSR
RTS 7 8 CTS
RI 9 10 NC
26. JP3:
(2.0mm Pitch 1x3 Pin Header) COM6 setting jumper, pin 1~3 are used to select signal out of pin 9
of COM6 port.
JP3 Pin# Function