42
GETTING TO KNOW YOUR IVH-9000
©Vecow IVH-9000 User Manual
2.4.19 CN18, CN19, CN20, CN21 : COM Port Header
The system provides four COM port headers for internal COM port cable.
Pin No.
Description
Port
1
Ground_Frame
COM1
2
Ground
COM1
3
RI
COM1
4
DTR
COM1
5
CTS
COM1
6
TXD
COM1
7
RTS
COM1
8
RXD
COM1
9
DSR
COM1
10
DCD
COM1
CN18:
CN21
CN19
CN20
CN18
Pin No.
Description
Port
1
Ground_Frame
COM2
2
Ground
COM2
3
RI
COM2
4
DTR
COM2
5
CTS
COM2
6
TXD
COM2
7
RTS
COM2
8
RXD
COM2
9
DSR
COM2
10
DCD
COM2
CN19:
Pin No.
Description
Port
1
Ground_Frame
COM3
2
Ground
COM3
3
RI
COM3
4
DTR
COM3
5
CTS
COM3
6
TXD
COM3
7
RTS
COM3
8
RXD
COM3
9
DSR
COM3
10
DCD
COM3
CN20:
Pin No.
Description
Port
1
Ground_Frame
COM4
2
Ground
COM4
3
RI
COM4
4
DTR
COM4
5
CTS
COM4
6
TXD
COM4
7
RTS
COM4
8
RXD
COM4
9
DSR
COM4
10
DCD
COM4
CN21: