E-11
TXD
RTS
SW4
SW5
SW7
SW6
SW8
TXA
TXB
RXA
COM3
RXB
Switch
Location
Switch Name
Compatible
I/F
Description
A
+5V/RI Changeover SW
COM1
B
+5V/RI Changeover SW
COM2
C
Serial Mode Select SW
COM3
8-point dip switch. Designates COM3 communication settings.
For Serial Mode Select SW details, see Table (1).
The factory settings are all OFF. (RS-232C)
D
Touch Panel's
Communication
Changeover SW
COM4
USB
Changes the Touch Panel communication method. (Serial <--->
USB) The factory setting is USB.
(If "Serial" is selected, COM4 cannot be used.)
Changes # 9 pin (RI <---> 5V).
The factory setting is RI.
Table (1) Serial Mode Select SW
( The factory settings are all OFF. Compatible I/F: COM3 )
*1
Be sure to keep the settings, "OFF".
*2
If you use termination resistance, base your setiings on your connection specifications.
The COM3 compatible Serial Mode Select Switches (SW4 to SW8) operate
as shown in the circuit diagram below.
Fig. 1 Serial Mode Select Switches (SW4 to SW8) circuit diagram
SW
No.
Description
ON
OFF
RS-232C RS-422 RS-485
1
Used by the system
Reserved
Reserved
OFF
*1
OFF
*1
OFF
*1
2
Changes COM3's
communciation method
RS-422/RS-485
RS-232C
OFF
ON
ON
3
Changes COM3's
communciation method
RS-422/RS-485
RS-232C
OFF
ON
ON
4
Changes T X data's output
mode
T X data output is
controlled via
the RT S signal.
T X data output is
NOT controlled via the RT S
signal. (normally output)
OFF
ON/OFF
ON
5
Switches the T X termination
resistance ON/OFF
Inserts termination
resistance of 220
Ω
between T XA and T XB.
No termination
OFF
ON
ON/OFF
*2
6
Switches the RX termination
resistance ON/OFF
Inserts termination
resistance of 220
Ω
between RXA and RXB.
No termination
OFF
ON
ON/OFF
*2
7
Switches the shorting of T XA
and RXA ON or OFF
Shorts T XA and RXA
(RS-485 mode)
No shorting
(RS-422 mode)
OFF
OFF
ON
8
Switches the shorting of T XB
and RXB ON or OFF
Shorts T XB and RXB
(RS-485 mode)
No shorting
(RS-422 mode)
OFF
OFF
ON
