654
FX
3G
/FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
28 Data Comparison – FNC220 to FNC249
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
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