643
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
28 Data Comparison – FNC220 to FNC249
21
FN
C
160-FN
C
169
R
eal
Ti
m
e
C
loc
k
C
ont
ro
l
22
FN
C
170
-F
N
C
17
9
E
xt
e
rnal
D
evi
ce
23
FN
C
180
Su
b
st.
I
n
str
. I
n
fo
24
FN
C
181-FN
C
189
O
ther
s
25
FN
C
190-FN
C
19
9
B
loc
k D
a
ta
O
per
at
io
n
26
FN
C
200-FN
C
209
C
har
act
e
r St
ring
C
ont
ro
l
27
F
N
C2
10
-F
NC
21
9
Da
ta
O
per
at
ion 3
28
FN
C
220-FN
C
24
9
Da
ta
Co
m
p
a
ris
o
n
29
FN
C
250-FN
C
269
Da
ta
T
a
b
le
O
per
at
io
n
30
FN
C
27
0-F
N
C
274
Ex
-D
ev
ic
e
In
ve
rte
r C
o
mm
s
28. Data Comparison – FNC220 to FNC249
FNC220 to FNC249 provide data comparison instructions which can be handled as contact symbols in
programming such as LD, AND and OR.
FNC No.
Mnemonic
Symbol
Function
Reference
220
−
−
221
−
−
222
−
−
223
−
−
224
LD=
Load Compare
=
Section
28.1
225
LD>
Load Compare
>
Section
28.1
226
LD<
Load Compare
<
Section
28.1
227
−
−
228
LD<>
Load Compare
≠
Section
28.1
229
LD<=
Load Compare
<=
Section
28.1
230
LD>=
Load Compare
>=
Section
28.1
231
−
−
232
AND=
AND Compare
=
Section
28.2
233
AND>
AND Compare
>
Section
28.2
234
AND<
AND Compare
<
Section
28.2
235
−
−
236
AND<>
AND Compare
≠
Section
28.2
237
AND<=
AND Compare
<=
Section
28.2
238
AND>=
AND Compare
>=
Section
28.2
S2
S1
LD=
S
1
S
2
S2
S1
LD>
S
1
S
2
S2
S1
LD<
S
1
S
2
S2
S1
LD<>
S
1
S
2
S2
S1
LD
<=
S
1
S
2
S2
S1
LD
>=
S
1
S
2
AND=
S2
S1
S
1
S
2
AND>
S2
S1
S
1
S
2
AND<
S2
S1
S
1
S
2
AND<>
S2
S1
S
1
S
2
AND
<=
S2
S1
S
1
S
2
AND
>=
S2
S1
S
1
S
2