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