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MELSEC-Q
4 SETTINGS AND PROCEDURES PRIOR TO OPERATION
(d) External device and Q series C24 with m:n (multidrop) system configuration
1) Connection example 1
Terminal
resistor
R
SDA
SDB
RDA
RDB
SG
FG
External device 1)
C24n
RS-422/485
cable
RS-422/485
cable
SD
RD
SDA
SDB
RDA
RDB
SG
FG
R
SD
RD
SDA
SDB
RDA
RDB
SG
FG
SD
RD
SD
RD
RS-232 RS-232
Linked
operation
External device 2)
C24 1) C24 2)
Linked
operation
R
2) Connection example 2
Terminal
resistor
R
SDA
SDB
RDA
RDB
SG
FG
External device 1)
C24 1)
C24n
RS-422/485
cable
RS-422/485
cable
SDA
SDB
RDA
RDB
SG
FG
R
SDA
SDB
RDA
RDB
SG
FG
SDA
SDB
RDA
RDB
SG
FG
RS-422/485
cable
R
External device 2)