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8.
COMMUNICATIONS USING DEDICATED PROTOCOLS
MELSEC-A
(2) Registering monitor data of device memory
(Example: YW60 for the range of
Y60
to 6 0
(a) Using the BM or WM command (ACPU common command)
esignation Method
1
St. No. :Station number
Designation in protocol 1 is shown below.
Character area C
(1) To designate the device range, the following conditions must be
met:
With PC CPUs other than A3HCPU, A2ACPU(S1), and A3ACPU,
1 point of device
X
(input) is counted as
2
points for processing.
0
BM command 1
5
number of device points
5 40
I
","Zk
Zode
H I L
Computer
0
WM command 1
5
number of device points
5
2 0
AJ71 CZ4
Monitor data
(bit) command
.......
BM
Designates the head device when a bit
Monitor data registration (word) command
.....
WM
device is designated in unitsof
I
PC
No.
H I
L
A
(2)
With the WM command, word devices and bit devices
(16
point
units) can be used in combination, as shown in Example
2.
I
St.
N o
H I
L
Example 1:
To display monitor registration for
X40, Y60,
and TI23 (contact) in station number "5".
I I I I I I I I I I
I I I I I
Device
I
Devise
I
. .
I
Device
(5characfen)
l (5characten)
I
1
(5 characten)
I
I 1 I
I l / / I I I
I I
I I
I
( ~ e s s a ~ e
wait time i& msec)
E
Check
s m
s ca
CL
31cd
u . m n
th s range..
, . ,
.
. .
:.
.
. .
,
.
,
.---.
.
.
,
[ .
I
l
l
2
2.
H l L H l L
BM
, &
I
X 0 C
4
O Y 0 0
S C l T
S 1 2
3
~a.,x.,~.,~.,3n.~a.,a.,a.,a.,a.:rr.,u.,,1.,~~~,~~~u.,~~.
8
8
Merssge
waiftime
I
Number
of
devisepoi"*
pcharacten
(hexadmimall
I
AJ71 C24
Indicates monitor registration in units of bits
A
C
K
h
0 5 F F
%,!5"1:5.,&
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