System Installation
FUDA3-S1x22 Series Panel PC User’s Manual
2-8
COM port RS-232/422/485 mode setup:
Note: Both COM1 & COM2 support RS-232/422/485 (selectable in BIOS menu).
RS-232 Mode Setup
PIN No.
Signal Description
PIN No.
Signal Description
1
Data Carrier Detect (DCD)
2
Receive Data (RXD)
3
Transmit Data (TXD)
4
Data Terminal Ready (DTR)
5
GND
6
Data Set Ready (DSR)
7
Request to Send (RTS)
8
Clear to Send (CTS)
9
Ring Indicator (RI)
RS-422 Mode Setup
PIN No.
Signal Description
PIN No.
Signal Description
1
TX-
2
TX+
3
Rx+
4
Rx-
5
GND
6
RTS-
7
RTS+
8
CTS+
9
CTS-
RS-485 Mode Setup
PIN No.
Signal Description
PIN No.
Signal Description
1
DATA-
2
DATA+
3
NC
4
NC
5
GND
6
NC
7
NC
8
NC
9
NC