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24
Chapter 4 Jumper Settings
Chapter 4
COM 1/COM 2 RS232/422/485 Select
JP12
1-3, 2-4 On:
RS232 (default)
3-5, 4-6 On:
RS422 Full Duplex/RS485
JP13 (for COM 1)/JP17 (for COM 2)
RS485
COM 2
1-2 On: RS232
(default)
1 3
5
2
4 6
RS422
Full Duplex
3-4 On: RS422
Full Duplex
5-6 On: RS485
RS232
2
1
9
RXD
DCD- TXD
D
TR
-
GND
DSR
-
RT
S-
CTS-
RI
-
2
1
9
RXD-
RXD+ TXD+
TXD-
NC.
NC.
NC.
NC.
NC.
2
1
9
D
ATA
-
D
ATA
+
TXD
NC.
NC.
NC.
NC.
NC.
NC.
2
1
9
COM 2:
RS232/422/485
COM 1:
RS232/422/485
JP8 and JP11 (for COM 1)/JP12 and JP15 (for COM 2)
JP15
JP17
JP8
JP11
JP13
These jumpers allow you to configure the Serial COM ports to RS232, RS422 (Full Duplex) or
RS485. JP8, JP11 and JP13 are used to configure the Serial COM port 1. JP12, JP15 and JP17
are used to configure the Serial COM port 2. The pin functions of Serial COM port 1 and COM
port 2 will vary according to these jumpers’ setting.
Note:
When COM 1 RS232/422/485 is selected, JP8 and JP11 must be set in accordance to
JP13. And when COM 2 RS232/422/485 is selected, JP12 and JP15 must be set in ac-
cordante to JP17.
COM 1
RS485
RS422
Full Duplex
RS232
DCD-
TD
RD
DT
R-
GND
1 2 3 4 5
RT
S-
RI
-
DSR
-
CTS-
6 7 8 9
N.C. N.C. N.C. N.C.
6 7 8 9
D
ATA
+
D
ATA
-
1 2 3 4 5
N.C.
N.C.
N.C.
RXD+
TXD+
RXD-
TXD- N.C.
1 2 3 4 5
6 7 8 9
N.C. N.C. N.C. N.C.
1 3
5
2
4 6
1 3
5
2
4 6
1 3
5
2
4 6
1 3
5
2
4 6
