Справочник Пользователя для Mitsubishi Electronics FXCPU
9 Applied Instructions (Arithmetic and Logical Operation)
9.6 DEC / Decrement
183
FXCPU Structured Programming Manual
[Basic & Applied Instruction]
1
O
utlin
e
e
2
Instruc
tion Li
st
3
Configurati
on of
Instruction
4
Ho
w t
o R
ea
d
Explanati
on of
Ins
truction
truction
s
5
B
asic
Instruction
6
Step Ladder
Instruct
ions
7
Ap
pl
ied Inst
ruct
io
io
ns
(Program Flow)
8
Appl
ied
ied
In
stru
cti
cti
ons
(Mov
e and
C
omp
are)
are)
9
App
lie
lie
d Instr
uction
s
s
(Ari
thm
eti
thm
eti
c and
Lo
gic
al O
per
at
ion)
10
App
lied Inst
lied Inst
ructi
ons
ons
(Rot
ati
ati
on and
Shift O
perati
on)
9.6
DEC / Decrement
Outline
This instruction decrements the data of a specified device by "1" (-1 addition).
1. Format and operation, execution form
2. Set data
3. Applicable devices
S: Refer to "Cautions".
Function and operation explanation
1. 16-bit operation(DEC, DECP)
The contents of the device specified by
are decremented by "1", and the decremented result is
transferred to the device specified by
.
2. 32-bit operation(DDEC, DDECP)
The contents of the device specified by
are decremented by "1", and the decremented result is
transferred to the device specified by
.
FX
3U(C)
FX
3G(C)
FX
3S
FX
2N(C)
FX
1N(C)
FX
1S
FX
U
/FX
2C
FX
0N
FX
0(S)
Instruction
name
Operation
Execution
form
Expression in each language
Structured ladder/FBD
ST
DEC
16 bits
Continuous
DEC(EN,d);
DECP
16 bits
Pulse
DECP(EN,d);
DDEC
32 bits
Continuous
DDEC(EN,d);
DDECP
32 bits
Pulse
DDECP(EN,d);
Variable
Description
Data type
16-bit
operation
32-bit
operation
Input
variable
variable
EN
Execution condition
Bit
Output
variable
variable
ENO
Execution state
Bit
Device storing data to be decremented by "1"
ANY16
ANY32
Operand
type
Bit Devices
Word Devices
Others
System User
Digit Specification
System
User
Special
Unit
Index
Constant
Real
Number
Character
String
Pointer
X Y M T C S D
.b KnX KnY KnM KnS T C D R U
\G
V Z Modifier K
H
E
"
"
P
z
z
z z z z
S1
S2
z z
z
DEC
EN
ENO
d
DECP
EN
ENO
d
DDEC
EN
ENO
d
DDECP
EN
ENO
d
Command input
"1" decrement data
DEC
EN
ENO
d
– 1
→
d
d
Command input
"1" decrement data
DDEC
EN
ENO
d
d
[ +1, ] – 1
→ [ +1, ]
d
d
d