4-3
4
HOW T
O
READ
INSTRUCT
IONS
Indicates the CPU modules that can use the instruction.
Indicates the instruction name and executing condition of the instruction.
Indicates the instruction names that can be described.
Indicates the description format of the instruction in the structured ladder and ST languages.
Indicates the names of input and output arguments, the data type of each argument, and the
availability of direct device setting for each instruction.
Icon
Description
Universal model
QCPU
High Performance model
QCPU
The normal icon indicates that the CPU module
can use the corresponding instructions.
The icon with
U
symbol indicates that the CPU
module can use the corresponding instructions
under certain restrictions. (Function version and
software version)
The icon with
symbol indicates that the CPU
module cannot use the corresponding instructions.
Executing condition
Non-
conditional
execution
Executed while
ON
Executed once at
ON
Executed while
OFF
Executed once at
OFF
Symbols on the
corresponding page
No symbol
Elementary
data type
Type
Description
Direct device
setting
Bit
Bool
Uses bit data or bit device.
(Data range: 0 (FALSE), 1 (TRUE))
Word (signed)
Integer
Uses signed word data.
(Data range: -32768 to 32767)
Double word
(signed)
Double-
precision
integer
Uses signed double-word data.
(Data range: -2147483648 to 2147483647)
Word
(unsigned)/
16-bit string
16-bit string
Uses unsigned word data/16-bit BIN data.
(Data range: 0 to 65535)
Double word
(unsigned)/
32-bit string
32-bit string
Uses unsigned double-word data/32-bit BIN data.
(Data range: 0 to 4294967295)
Single-
precision real
Real
Uses floating-point data.
(Data range: -2
128
to -2
-126
, 0, 2
-126
to 2
128
)
Double-
precision
real
*1
Double-
precision real
Uses floating-point data.
(Data range: -2
1024
to -2
-1022
, 0, 2
-1022
to 2
1024
)
String
Character
string
Uses character string data. (Data range: max. 255 characters)
Time
*2
Time value
Uses the time type data.
(Data range: T#-24d-0h31m23s648ms to
T#24d20h31m23s647ms)
3
U
n
i
versa
l
UD
Hi
g
h
Per
f
ormance
U
n
i
versa
l
UD
Hi
g
h
Per
f
ormance
U
n
i
versa
l
UD
Hi
g
h
Per
f
ormance
4
5
6
7
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: ......