SYM76993VGGA Quick Installation Guide
5、COM1 RS232/422/485 setting:
Note: Mode1 /Mode2 determine that COM1 belongs to RS232/422/485
Packing list:
SYM76993VGGA Mainboard *1pcs
Utility CD for SYM76993VGGA *1pcs
Installation Guide *1pcs
USB cable *1 pcs
SATA cable *2pcs;
Com extension cables *2pcs
I/O Shield *1pcs
RS232
RS422
RS485
Mode1
2-3
2-3
1-2
Mode2
1-2
2-3
2-3
RS232
RS422
RS485
1
Carrier detect
TX-
TX -
2
Received data
TX+
TX+
3
Transmitted
RX+
NC
4
Data terminal
RX-
NC
5
GND
GND
GND
6
Data set ready
NC
NC
7
Request to send
NC
NC
8
Clear to send
NC
NC
9
Ring
NC
NC
