8.
COMMNICATIONS
USING
DEDICATED
PROTOCOLS
MELSEC-A
8.1
0.2
Speclal
function
module numbers
wlng
control
protocolr
(1)
The special function module numbers designated by using control
protocols are the upper
2
digits of the
last
special function module
1/0
address expressed in
3
digits.
Special function module number: OAH
Spocial function modulo number:
07H
I
I
16poinb
32pdnb
WtoW
lOto2F
%to*
SOtoSf
boto7F
Wto8F
OOtoAF
BOtoCF
32pdnb
32poinb
32polnb
l6poinb
Wpdnb
16-
,-
Spocial function module number: H13
I
P-b
/I
'..
2
-c
W
toDF EOtoFF 1oOtollF IXltol3F 11otolSF
(2)
Precautions with special function modules occupying two slots
For
special function modules occupying
two
slots, the number of points
occupied by each slot is fixed
for
each module. The special function
module number is the upper
2
digits of the last address of the slot
allocated to the special function module.
The User's Manual for each special function module gives details about
the allocation of slots to each module.
(a) Modules with the front slot allocated
as
the vacant slot
(AD72,
AWAD,
etc.)
I
'
spscial
Vacantdat)
I
function
I
module
..........
sp.Cial
function
module number:
02H
I
16 points
I
32 point6
OOtoOF
10
to 2F
(b) Modules with the rear slot allocated as the empty slot
(AGlLS,
etc.)
,p
-
_.
-
Special
I
function
I
(Vacant
slot)
module
;
..........
Special
function nwduk numh 01
H
I
32 points
I
16
points
WtolF
X)
to 2F
C'
8-72
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