3.
SPECIFICATIONS
MELSEC-A
(R.hfWlC.
Mona)
.....
7.6.1
.....
7.6.2
1311H
I
o
I
o
i
o
I
1 1 CHo
-:
-
-
System
area (Unusable)
-
to
1lDH
0;
0
0
DC2/DC4
control
code
specifiiation area 141W
llFH
'User area (1 760
words)
....
8.14
10
0
0'3 0'3
0'3
7FFH
'4
,
.....
7.7
The
0,
A,
and
-
symbols in the table indicate the following:
0:
PC CPUs and computers can read/write fromlto this area.
A:
PC CPUs and computers can only read from this area.
-:
PC CPUs and computers do not need to readlwrite from/to this area.
'1:
The unit of tho transmission (sond/rocoive) data in tho no-protocol modo
or
bidirectional
mode
or
of
the send data when tho on-demand function of tho dodicatod protocol is urod.
'2: Set this when the RS-232C interface is set to half-duplex communications.
'3:
Areas
should be allocated
so
that they do not overlap with each othor when (a) data
is
transmittod in the no-protocol mode
or
bidirectional mode,
or
(b) when more than one
function
of
data transmission using the on-demand function of the dedicated protocol is
used.
'4: Change the default values marked by the dot symbol
(0)
attached to tho right of the addross
only when the READY signal of the AJ71-4 is turned
ON
after the power is turned
ON
or
the PC CPU is roset.
Or change the default values when the higher bytes of the buffer's mode switching
designation area (address ll9H) change into 02H after the AJ71C24 READY signal is
turned
ON
by switching the mode
of
the AJ71-4.
'5
Values (1H
to
DH) that correspond to set values (1
to
D) of the mode setting switch
(see
Section 4.3.1) are stored as default values.
'6
0
is stored before switching the mode.
The values (1 H
to
DH)
of
the mode number that correspond
to
the current mode are
stored
after switching the mode.
1 H to DH correspond to the set values (1 to D) of the mode setting switch
(see
Section
4.3.1).
,-
e'
.I.
1
1
4
i
i
d
7
3
3-39
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
To Next Page
Loading...
