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1 OVERVIEW
MELSEC-QnA
1.4 Number of Occupied Stations and Station Number, Number of Modules and Number of
Stations
The relationship between number of occupied station and station number, and
between number of modules and number of stations is described below.
(1) Number of occupied stations
The number of occupied stations is fixed for each module (remote I/O station,
remote device station, and local station).
However, the number of occupied stations can be set (1 to 4 stations
) for local
stations.
Module Number of occupied stations
Remote I/O station (16 points and 32 points module) 1 station
AJ65BT-64AD 2 stations
AJ65BT-64DAV 2 stations
AJ65BT-64DAI 2 stations
AJ65BT-D62
AJ65BT-D62D (S1)
4 stations
Remote device station
A852GOT 2 or 4 stations
Local station 1 to 4 stations (changed by switch)
AJ65BT-R2(N) 1 station
AJ65BT-G4 1 station
Intelligent device station
AJ65BT-D75P2-S3 4 stations
The AJ61QBT11 of hardware version F or later and the A1SJ61QBT11 of hardware version G or later are
compatible with this setting. For other than the above, the setting is 1 or 4 stations only.
(2) Station number
When the number of occupied station for all connected stations is set to "1
station," the station number is set continuously from 1 (e.g. 1, 2, 3,... ).
However, when a station which occupies more than 2 stations is connected, the
setting must be performed considering the number of occupied stations.
Station No.5Station No.6Station No.7Station No.8Station No.9Station No.4Station No.3Station No.2Station No.1
Master
station
Local station
(occupies 4
stations)
Station No.4
Local station
(occupies 1
station)
Station No.9
Remote station
(occupies 2 stations)
Station No.1
Remote station
(occupies 1 station)
Station No.3
Remote station
(occupies 1 station)
Station No.8
(3) Number of modules and number of stations
Number of modules is a physical module count.
Number of stations is a number of occupied stations for each module as stated in
(1).
In the system configuration example in (2), the number of modules is 5 and
number of stations is 9.