7
*2 The Soft OFF refers to the state that Windows
®
has been shut down and the power is provided only
for the electric circuit to boot system. This Soft OFF State is different from what is System Standby
set by Windows
®
.
*3 When built in Pro-face's Windows
®
XP Embedded, the factory setting is ON.
*4 The Setting up an enabled/Disabled state for USB port execution control function is available for only
Windows
®
2000 and Windows
®
XP. Make sure to disable the function of the setting when other OS used.
Switch
No.
Description
ON
OFF
RS-232C
RS-422
RS-485
1
Used by the system.
No Connection
No Connection
OFF
*1
*1 Be sure to keep the settings, "OFF".
OFF
*1
OFF
*1
2
Changes
COM3
's
communication
method.
RS-422/RS-485
RS-232C
OFF
ON
ON
3
Changes
COM3
's
communication
method.
RS-422/RS-485
RS-232C
OFF
ON
ON
4
Changes TX data's
output mode.
TX data output is
controlled via the
RTS signal.
TX data output is
NOT controlled via
the RTS signal.
(normally output)
OFF
ON/OFF
ON/
OFF
*2
5
Switches the TX
termination resistance
ON/OFF.
Inserts termination
resistance of 220W
between TXA and
TXB.
No termination
OFF
ON
ON/
OFF
*3
6
Switches the RX
termination resistance
ON/OFF.
Inserts termination
resistance of 220W
between RXA and
RXB.
No termination
OFF
ON
ON/
OFF
*3
7
Switches the shorting
of TXA and RXA ON or
OFF.
Shorts TXA and
RXA
(RS-485 mode)
No shorting
(RS-422 mode)
OFF
OFF
ON
8
Switches the shorting
of TXB and RXB ON or
OFF
Shorts TXB and
RXB
(RS-485 mode)
No shorting
(RS-422 mode)
OFF
OFF
ON
9
RTS Automatic control
mode
(enabled only when
RS-485 mode).
The data is
automatically
controlled via the
RTS signal.
The data is not
automatically
controlled via the
RTS signal.
OFF
OFF
ON/
OFF
*2
10
OFF
OFF
ON/
OFF
*2
Table 2) Serial Mode Select Switch
Serial Mode Select Switches (SW4 to SW10) operate as shown in the circuit diagram below.
RTS Automatic
control
