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MELSEC-Q
3 SPECIFICATIONS
(6) List of Active Slaves (LAS) (Buffer memory address 15
H
to 16
H
,
17
H
to 18
H
: Un\G21 to Un\G22, Un\G23 to Un\G24)
Bit 15
14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
15
H
15A 14A 13A 12A 11A 10A 9A 8A
7A 6A 5A 4A 3A 2A 1A
16
H
31A 30A 29A 28A 27A 26A 25A 24A 23A 22A 21A 20A 19A 18A 17A 16A
17
H
15B
14B 13B 12B 11B 10B 9B 8B
7B 6B 5B 4B 3B 2B 1B
18
H
31B 30B 29B 28B 27B 26B 25B 24B 23B 22B 21B 20B 19B 18B 17B 16B
: Not used (0 fixed)
The bits corresponding to the slave addresses ready for communication turn ON.
When the bit is ON, the slave corresponding to that bit is ready for
communication in the AS-i system.
When the bit is OFF, the slave corresponding to that bit is not ready for
communication in the AS-i system.
The active slave list (LAS) is made up as described below.
(a) In the configuration mode
The active slave list (LAS) has the same contents as the detected slave list
(LDS). Namely, the detected slaves are always ready for communication.
(b) In the protected operating mode
The active slave list (LAS) consists of the slaves that are ON in both the
detected slave list (LDS) and projected slave list (LPS (for read)). Namely,
only the slaves already registered to the projected slave list (LPS (for read))
from among the detected slaves (slaves that are ON in the detected slave
list (LDS)) are ready for communication.
(Related items: Section 3.4.2 (5), Section 3.4.2 (7))
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