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687
FX
3G
/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 T
im
e C
lo
ck
C
ont
ro
l
22
FN
C
170-
FN
C
179
Exter
nal D
ev
ice
23
FN
C
180
Al
ter
nate
In
str
uc
tions
24
FN
C
181-
FN
C
189
O
ther
s
25
FN
C
190-
FN
C
199
B
lock D
ata
O
per
at
ion
26
FN
C
200
-F
N
C
20
9
C
har
acter
S
tring
C
ont
ro
l
27
FN
C
210-
FN
C
219
Da
ta
O
per
ation 3
28
FN
C
220-
FN
C
249
Da
ta
C
om
par
ison
29
FN
C
250
-F
N
C
26
9
D
ata T
abl
e
O
per
ati
on
30
FN
C
270-
FN
C
274
Ex
-D
ev
ice
Inv
ert
er
Com
m
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