Com Port (Com1) - Neousys Technology POC-351VTC User Manual

2.3.1

COM Port (COM1)

Implemented using industrial-grade ITE8786 Super IO chip (-40 to 85°C) and provide
up to 921600 bps baud rate, COM1 is a software-configurable RS-232/422/485 port
via 9-pin D-Sub male connector. The operation mode, slew rate and termination of
COM1 can be set in BIOS setup utility. The following table describes the pin
definition of COM ports.
Pin#
1
2
3
4
5
6
7
8
9
POC-351VTC
RS-232 Mode RS-422 Mode
DCD
RX
TX 422 RXD+
DTR
GND
DSR
RTS
CTS
RI
29
COM1
RS-485 Mode
(Two-wire 485)
422 TXD+ 485 TXD+/RXD+
422 RXD-
GND
422 TXD- 485 TXD-/RXD-
GND