11
UNO-3000G Series User Manual
Chapter 2
H
ardware
F
unctionality
Toggle Switch
1.
Set Item "serial port X controlled by" to "Switch" in BIOS setup sub-manu
"Advanced/NCT6776F Super I/O Configuration/Serial Port X Configuration".
2.
Switch the internal SW1 and SW4 according to the Table2.1 and Table2.2.
Please refer to Appendix A.2 for switch's location.
Table 2.1: Terminal Resistor Setting for COM1
SW1
Description
Function
Pin4
Pin3
Pin2
Pin1
X
X
X
On
COM1 Mode RS232
RS232
On
On
On
Off
COM1 Master Mode RS422 with Tx, Rx ter-
mination
RS422
On
On
Off
Off
COM1 Slave Mode RS422/RS485 with Tx,
Rx termination
RS422/RS485
On
Off
On
Off
COM1 Master Mode RS422 with Rx termina-
tion
RS422
On
Off
Off
Off
COM1 Slave Mode RS422 with Rx termina-
tion or RS485
RS422/RS485
Off
On
On
Off
COM1 Master Mode RS422 with Tx, termina-
tion
RS422
Off
On
Off
Off
COM1 Slave Mode RS422/RS485 with Tx
termination
RS422/RS485
Off
Off
On
Off
COM1 Master Mode RS422
RS422
Off
Off
Off
Off
COM1 Slave Mode RS422 or RS485
RS422/RS485
