9-4
9.1 Overview
By using the device specification method, data can be written/read within the device
range of the host CPU.
For example, when the data register of the host CPU is 12k points, and the data register
of other CPU is 16k points, data of 12k points can be written/read from the start of the
data register of the other CPU.
The range for writing/reading data when the device is specified
(b) Character string specification
The character string specification is a method for specifying devices of the other CPU
using the character string.
Character string specification of the DP_DDWR instruction
By using the character string specification method, data can be written/read within the
whole device range of the other CPU.
For example, when the data register of the host CPU is 12k points, and the data register
of the other CPU is 16k points, data of 16k points can be written/read from the start of
the data register of the other CPU
The range for writing/reading data when the character string is specified
The following describes the precautions on the character string specification.
Up to 32 characters can be specified.
Device numbers with or without '0' is appended to their upper digits are processed
as a same device. For example, 'D1' and 'D0001' are processed as 'D1'.
Devices specified with uppercase and lowercase of the same letter are processed
as a same device. For example, 'D1' and 'd1' are processed as 'D1'.
If devices that do not exist in other CPUs are specified by the character string, the
instruction completes with an error.
H
ost
CP
U
D0
Data
reg
i
ster
(12k
po
i
nts)
Data
reg
i
ster
(16k
po
i
nts)
O
t
h
er
CP
U
D12287
D12287
D0
D12288
D16383
Data
can
be
wr
i
tten
/
read
Data
cannot
be
wr
i
tten
/
read
Spec
i
f
i
es
t
h
e
dev
i
ce
'
D200
'
of
t
h
e
ot
h
er
CP
U
to
be
wr
i
tten
us
i
ng
t
h
e
c
h
aracter
str
i
ng
.
H
ost
CP
U
Data
reg
i
ster
(12k
po
i
nts)
Data
reg
i
ster
(16k
po
i
nts)
O
t
h
er
CP
U
D12287
D16383
Data
can
be
wr
i
tten
/
read
D0
D0
Summary of Contents for MELSEC Q Series
Page 1: ...Structured Programming Manual Mitsubishi Programmable Controller QCPU Common Instructions ...
Page 2: ......
Page 14: ...A 12 MEMO ...
Page 340: ...6 178 MEMO MTR ...
Page 708: ...7 368 MEMO ...
Page 776: ...8 68 MEMO ...
Page 796: ...9 20 MEMO ...
Page 804: ...App 8 MEMO ...
Page 812: ...Index 8 MEMO ...
Page 815: ......