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Copyright © 2013 NEXCOM International Co., Ltd. All Rights Reserved.
15
Chapter 2: External Connectors Pinout Description
VTC 7200-BK Series User Manual
COM1 and COM3
Connector Number: 19
Pin
Definition
Pin
Definition
1
DCD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
1
5
6
9
COM2 (RS232/422/485 and RI/12V Selection)
Connector Number: 20
RS232 / RS422 / RS485 is selected in BIOS setting
Pin
Definition
Pin
Definition
1
DCD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
Pin
Definition
Pin
Definition
1
TXD-
2
TXD+
3
RXD+
4
RXD-
1
5
6
9
RS232 (Default)
RS422/485