Data Comparison - Fnc220 To Fnc249 - Mitsubishi Electric MELSEC FX3U Programming Manual

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
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
−
220
−
221
−
222
−
223
224 LD=
225 LD>
226 LD<
−
227
228 LD<>
229 LD<=
230 LD>=
−
231
232 AND=
233 AND>
234 AND<
−
235
236 AND<>
237 AND<=
238 AND>=
Symbol
LD= S1 S2
LD> S1 S2
LD< S1 S2
LD<> S1 S2
LD<= S1 S2
LD>= S1 S2
AND= S1 S2
AND> S1 S2
AND< S1 S2
AND<> S1 S2
AND<= S1 S2
AND>= S1 S2
28 Data Comparison – FNC220 to FNC249
Function
Load Compare =
S S
1 2
Load Compare >
S S
1 2
Load Compare <
S S
1 2
≠
Load Compare
S S
1 2
Load Compare <=
S S
1 2
Load Compare S >= S
1 2
AND Compare S = S
1 2
AND Compare S > S
1 2
AND Compare <
S S
1 2
≠
AND Compare S S
1 2
AND Compare S <= S
1 2
AND Compare >=
S S
1 2
21
22
Reference
−
23
−
−
24
−
Section
28.1
Section
28.1
25
Section
28.1
−
26
Section
28.1
Section
28.1
Section
27
28.1
−
Section
28.2
28
Section
28.2
Section
28.2
−
29
Section
28.2
Section
28.2
30
Section
28.2
687