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App. - 21 App. - 21
MELSEC-Q
APPENDIX
(2) Connection example
(Connection example 1)
CD
RD
SD
DTR
SG
DSR
RS
CS
RI
FG
TXD
RXD
RTS
CTS
DTR
DSR
CD
SG
RS232 signal
SW1
1
2
3
4
5
6
7
8
OFF
ON
OFF
ON
OFF
ON
OFF
ON
SW2
OFF1
2
3
4
5
6
7
OFF
OFF
OFF
OFF
OFF
OFF
TX
RX
RTS
CTS
SG
RS422 signal
FG
External device side
RDA
RDB
SDA
SDB
DSRA
DSRB
DTRA
DTRB
RTSA
RTSB
CTSA
CTSB
1 or 14
20
7
16
3
19
6
15
2
(EL-LINE-II)
SG
R
R
1
2
3
4
5
6
7
8
9
1
2
3
4
5
20
6
8
7
Q series C24 side
• The CD terminal check setting should be set to "No check" according to the explanation in Section 3.2.1 (1).
• DC code control or DTR/DSR control becomes possible for transmission control.
(Connection example 2)
CD
RD
SD
DTR
SG
DSR
RS
CS
RI
FG
RD
SD
CS
RS
ER
SG
CD
DR
RS232 signal
SW1
1
2
3
4
5
6
7
8
ON
ON
OFF
OFF
ON
ON
ON
ON
SW2
ON1
SG
RS485 signal
FG
External device side
RDA
RDB
SDA
SDB
DSRA
DSRB
DTRA
DTRB
RTSA
RTSB
CTSA
CTSB
(KS-1/KS-10P)
SG
R
R
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
FG
(+)
DATA
OUT
(-)
(+)
DATA
IN
(-)
(+)
CONT
OUT
(-)
(+)
CONT
IN
(-)
1
19
25
15
17
14
16
21
7
23
Q series C24 side
• The CD terminal check setting should be set to "No check" according to the explanation in Section 3.2.1 (1).
• DC code control or DTR/DSR control becomes possible for transmission control.