User`s manual

SBC86834 All-In-One Mini ITX Board User’s Manual
Jumpers and Connectors
21
2.4.1 COM3~COM6 Port Connectors (CN9, CN10, CN12,
CN13)
Jumper selectable with +5V/12V power capability is on DCD and RI,
depending on the jumper setting.
Please refer to the RS-232 pin assignment as listed below:
Pin Signal Pin Signal
1
Data Carrier Detect
(DCD)
2
Data Set Ready
(DSR)
3 Receive Data (RXD) 4
Request to Send
(RTS)
5 Transmit Data (TXD) 6 Clear to Send (CTS)
7
Data Terminal Ready
(DTR)
8 Ring Indicator (RI)
9 Ground (GND) 10 Ground (GND)
2.4.2 Digital I/O Port (DIO) Connector (CN3)
The board is equipped an 8-channel digital I/O connector CN3 that
meets requirements for a system customary automation control. The
digital I/O can be configured to control cash drawers, sense warning
signals from an Uninterrupted Power System (UPS), or perform store
security control. The digital I/O is controlled via software programming.
Pin Signal Pin Signal
1
Digital Input 1
2
Digital Output 1
3
Digital Input 2
4
Digital Output 2
5
Digital Input 3
6
Digital Output 3
7
GND
8
Digital Output 4
9
GND
10
Digital Output 5