Com Ports - Neousys Nuvo-7160GC Series User Manual

2.4.2

COM Ports

The system provides four COM ports for communicating with external devices. These COM
ports are implemented using industrial-grade ITE8786 Super IO chip (-40 to 85°C) and
provide up to 115200 bps baud rate.
COM1 and COM2 (in red) are software-configurable RS-232/422/485 ports. COM3 and
COM4 (in blue) are standard 9-wire RS-232 ports. The operation mode of COM1 and COM2
can be set in BIOS setup utility. The following table describes the pin definition of COM ports.
COM Port Pin Definition
RS-232
Pin#
Mode
1 DCD
2 RX
3 TX
4 DTR
5 GND
6 DSR
7 RTS
CTS
8
RI
9
Nuvo-7160GC/ Nuvo-7164GC Series
COM1 & COM2
RS-485 Mode
RS-422 Mode
(Two-wire 485)
422 TXD+ 485 TXD+/RXD+
422 RXD+
422 RXD-
GND
422 TXD- 485 TXD-/RXD-
35
COM3 & COM4
RS-232 Mode
DCD
DTR
GND GND
DSR
RTS
CTS
RX
TX
RI