Mitsubishi QJ71C24/-R2 User Manual page 316

APPENDIX
Q series C24 side
DTR
DSR
External device side
FG
SD
RD
RS
CS
DSR
SG
CD
DTR
App. - 22
(Connection example 3)
RS232 signal
1
CD 1
2 2
RD
3 3
SD
4 5
5 6
SG
6 7
7 20
RS
8 24
CS
9 25
RI CNT
• Data communication can be made in half-duplex communication.
• The CD terminal check setting should be set to "No check" according to the explanation in Section 3.2.1 (1).
• Transmission control cannot be used.
(Connection example 4)
(KS-485)
RS232 signal
1
FG SW1
2
RD
1 ON
3
SD
2 ON
5
CS
3 ON
6
ER
4 OFF
7
SG
5
OFF
20
DR
6 OFF
24
TC
7 OFF
25
CNT
8 OFF
(KS-485)
FG SW1
RD
1 ON
SD
2 ON
CS
3 ON
ER
4 OFF
SG
5 OFF
DR
6 OFF
TC
7
ON
8 ON
RS485 signal
SG
TRD+
TRD-
FG
These switches should
be ON when the KS-485
is at the terminal of the
line.
RS485 signal
1
SG
2
TRD+
3
TRD-
9
FG
Q series C24 side
1
FG
2
SDA
3
SDB
9
RDA
RDB
SG
• Data communication can be made
in half-duplex communication.
• Transmission control cannot be used.
MELSEC-Q
External device side
FG
SDA
SDB
RDA
R
RDB
SG
When connecting
R with other stations
App. - 22