Instruction Manual

3-12
IM DR231-01E
3.4 Connecting the Interface Cables
RS-232-C
Communication Settings
Communication parameters are set using the three switches located on the RS-232-C modules.
1234
Switch 1
Data length
Baud rate
1234
Switch 2
Not used
Parity
Stop bit
1234
Switch 3
Not used
Handshake format
ON
OFF
OFF
OFF
ON
ON
Switch 1 and No.4 of switch 2
Baudrate dipswitch No.1 No.2 No.3 No.4 (Switch 2)
150 OFF OFF OFF OFF
300 OFF OFF ON OFF
600 OFF ON OFF OFF
1200 OFF ON ON OFF
2400 ON OFF OFF OFF
4800 ON OFF ON OFF
9600 ON ON OFF OFF ←initial value
19200 ON ON ON OFF
38400 OFF OFF OFF ON
Data length dipswitch No.4
7 bits OFF
8 bits ON ←initial value
Switch 2
Parity dipswitch No.1 No.2
NONE OFF OFF
ODD OFF ON
EVEN ON OFF ←initial value
Stop bit dipswitch No.3
1 OFF ←initial value
2ON
Switch 3
Handshake format dipswitch No.1 No.2 No.3
no handshake OFF OFF OFF ←initial value
XON-DTR* OFF OFF ON
XON-RTS* OFF ON OFF
CTS-DTR OFF ON ON
CTS-RTS ON OFF OFF
*: When the baud rate is set to 38400, there is no handshake.