Mitsubishi Electric MELSEC-Q Series User Manual page 173

(1) Setting method
Set the number of points of a remote I/O station in "Remote Station Points" under "Station Information Setting" of
the network parameter. (
● When setting eight-point remote I/O stations, set an even number of stations consecutively. When setting an odd number
of eight-point remote I/O stations, set "8 Points + 8 Points (Reserved)" to the last of consecutive remote I/O stations.
When three output modules with eight points are connected
Ex.
Master station
Remote output (RY)
Station Station
number 2 number 1
Station
Reserved
number 3
Station
number 4
8 points + 8 points (reserved)
When the number of remote I/O stations is odd, eight points cannot be set in the remote station points.
Master station
Remote output (RY)
Station Station
number 2 number 1
Station
number 3
Station
number 4
Cannot be set
The parameter cannot be set using dedicated instructions. Therefore, read or write data from/to the device in a CPU
module according to the number of I/O points of each station using a program. Consequently, the areas in refresh
devices can be saved.
• Reading/writing data using an intelligent function module device (Un\G)
• Reading/writing data using the FROM/TO instructions
(2) Precautions when configuring the number of remote I/O station points
Set the number of points greater than the I/O points of a remote I/O station connected. If the smaller number of
points is set in a station, data cannot be normally input to or output from stations after that.
Page 102, Section 7.3.2 (2))
Remote I/O station Remote I/O station
(Station No.1, the (Station No.2, the
number of occupied number of occupied
stations: 1) stations: 1)
Y07 to Y00
Y07 to Y00
8-point output 8-point output
module module
Remote I/O station Remote I/O station
(Station No.1, the (Station No.2, the
number of occupied number of occupied
stations: 1) stations: 1)
Y07 to Y00
Y07 to Y00
8-point output 8-point output
module module
Remote I/O station Remote I/O station
(Station No.3, the (Station No.4, the
number of occupied number of occupied
stations: 1) stations: 1)
Y07 to Y00
Y0F to Y00
Y1F to Y10
8-point output
32-point output
module module
Remote I/O station Remote I/O station
(Station No.3, the (Station No.4, the
number of occupied number of occupied
stations: 1) stations: 1)
Y07 to Y00
Y0F to Y00
Y1F to Y10
8-point output
32-point output
module module
CHAPTER 8 FUNCTIONS
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