Mitsubishi LJ61BT11 User Manual page 80

(1) Station number setting
Specify unassigned station numbers as reserved stations. An unassigned station
number will be treated as a "data link faulty station" (can be verified with link special
registers SW0080 to SW0083).
7 - 8
The following explains how to set the station numbers for the master station and
slave stations.
Specify the station numbers according to the following conditions.
(a) Specify sequential station numbers
Station numbers can be specified regardless of the order in which the
stations are connected.
For a module occupying two or more stations, specify the first station
number.
(b) Specify unique station numbers
If duplicate station numbers are specified, an installation error occurs. (Error
codes are stored in SW0069)
[Setting example] When station numbers are specified with one station number
skipped
POINT
7 PARAMETER SETTINGS
7 - 8