11 - 305 11 - 305
MELSEC-Q
11 INSTRUCTIONS AND FUNCTIONS
• The module number (hexadecimal) of the special function module is the two higher
digits of the 3-digit expression of the last address of the special function module's I/O
addresses seen from the PLC CPU.
(a) In case of a single-slot module (e.g., AD61, A68AD)
PL
C CP
U
S
p
e
c
ia
l f
unct
io
n
m
o
du
le
32 p
o
in
ts
000
01F
to
• • • • • • Since the last address is 01F
H
, the special function module
number is "01
H
."
(b) In case of a module where the first half slot is allocated as a vacant slot (e.g.,
AD72, A68AD)
PL
C
CP
U
V
a
cant
sl
ot
16
poi
nt
s
010
02F
to
to
• • • • • • Since the last address is 02F
H
, the special function module
number is "02
H
."
000
00F
S
peci
a
l f
u
n
c
ti
on m
odul
e
3
2
poi
nt
s
(c) In case of a module where the second half slot is allocated as a vacant slot (e.g.,
A61LS)
PLC CP
U
020
02F
• • • • • • Since the last address is 01F
H
, the special function module
number is "01
H
."
S
peci
a
l f
unc
ti
o
n
m
odul
e
32 poi
n
ts
000
00F
V
a
cant
sl
ot
16
poi
nt
s
to
to
