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13
NEX 813 User Manual
Chapter 2: Jumpers and Connectors
COM3 to COM6 Serial Port Headers
Connector type: 2x5 10-pin header
Connector location: COM3, COM4, COM5, and COM6
Pin
Definition
Pin
Definition
1
DCD#
2
RXD
3
TXD
4
DTR#
5
GND
6
DSR#
7
RTS#
8
CTS#
9
Ring
10
COM1 to COM2 Serial Port Headers
Connector type: 2x5 10-pin header
Connector location: COM1, COM2
COM1
Pin
Definition
Pin
Definition
1 DCD# (422TXD-/485TXD-)
2
RXD (/)
3
TXD ()
4
DTR# (422RXD-)
5
GND
6
DSR#
7
RTS#
8
CTS#
9
RI/+5V/+12V
10
COM2
Pin
Definition
Pin
Definition
1
DCD#
2
RXD
3
TXD
4
DTR#
5
GND
6
DSR#
7
RTS#
8
CTS#
9
Ring
10
2
10
1 9
2
10
1 9