Справочник Пользователя для Mitsubishi Electronics FXCPU
28 Applied Instructions (Data Comparison)
28.1 LD =, >, <, <>, <=, >= / Data Comparison
669
FXCPU Structured Programming Manual
[Basic & Applied Instruction]
21
Appl
ied
ied
In
stru
cti
cti
ons
(R
eal
T
T
im
e
C
lock
Contr
Contr
ol)
22
Ap
plied
Instru
ctio
ns
Instru
ctio
ns
(E
xt
er
na
l De
vi
vi
ce
)
23
App
lied Instr
lied Instr
ucti
ons
(Ex
tensi
on
tensi
on
Functi
on)
24
Ap
pl
ied In
struct
struct
ions
(O
thers)
25
Appl
ied
ied
Instru
cti
cti
ons
(B
lock
Dat
a
Dat
a
O
per
at
io
n)
26
App
lie
lie
d Instr
uction
s
s
(Charac
ter
Stri
ng C
ontrol
)
27
Ap
pl
ied Inst
ruct
io
io
ns
(D
ata
Op
eration 3
eration 3
)
28
Appl
ied
ied
In
stru
cti
cti
ons
(D
ata C
om
om
par
ison
)
29
App
lie
lie
d Instr
uction
s
s
(D
ata
T
T
abl
e
O
peration
)
30
Appli
ed In
struc
tions
ed In
struc
tions
(E
xt
ernal Devi
ce
Comm
uni
cat
ion)
28.1
LD =, >, <, <>, <=, >= / Data Comparison
Outline
These instructions compare numeric values, and set a contact to ON when the condition agrees so that an
operation started.
operation started.
1. Format and operation, execution form
*1.
Refer to "Cautions".
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
*1
LD=
16 bits
Continuous
-
LD>
16 bits
Continuous
-
LD<
16 bits
Continuous
-
LD<>
16 bits
Continuous
-
LD<=
16 bits
Continuous
-
LD>=
16 bits
Continuous
-
LDD=
32 bits
Continuous
-
LDD>
32 bits
Continuous
-
LD=
EN
s1
s2
ENO
LD>
EN
s1
s2
ENO
LD<
EN
s1
s2
ENO
LD<>
EN
s1
s2
ENO
LD<=
EN
s1
s2
ENO
LD>=
EN
s1
s2
ENO
LDD=
EN
s1
s2
ENO
LDD>
EN
s1
s2
ENO