Mitsubishi Electric MELSEC-Q/L - Page 31

2 INSTRUCTION TABLES
2.4 Basic Instructions
29
2
2.4 Basic Instructions
Comparison operation instructions
Category Instruction
symbol
Symbol Processing details Execution
condition
Number
of basic
steps
Subset Reference
BIN 16-bit
data
comparisons
LD= • Conductive status when (S1)
= (S2)
• Non-conductive status when
(S1)  (S2)
3 ● Page 187
AND=
OR=
LD<> • Conductive status when (S1)
 (S2)
• Non-conductive status when
(S1) = (S2)
3 ●
AND<>
OR<>
LD> • Conductive status when (S1)
> (S2)
• Non-conductive status when
(S1)  (S2)
3 ●
AND>
OR>
LD<= • Conductive status when (S1)
 (S2)
• Non-conductive status when
(S1) > (S2)
3 ●
AND<=
OR<=
LD< • Conductive status when (S1)
< (S2)
• Non-conductive status when
(S1)  (S2)
3 ●
AND<
OR<
LD>= • Conductive status when (S1)
 (S2)
• Non-conductive status when
(S1) < (S2)
3 ●
AND>=
OR>=
BIN 16-bit
data
comparisons
CMP • (D) Conductive status when
(S1) > (S2)
• (D)+1 Conductive status
when (S1) = (S2)
• (D)+2 Conductive status
when (S1) < (S2)
4  Page 205
CMPP
ZCP • (D) Conductive status when
(S1) > (S3)
• (D)+1 Conductive status
when (S1)  (S3)  (S2)
• (D)+2 Conductive status
when (S3) > (S2)
5  Page 208
ZCPP
S1 S2
S1 S2
S1 S2
S1 S2
S1 S2
S1 S2
S1 S2
S1 S2
S1 S2
S1 S2
S1 S2
S1 S2
S1 S2
S1 S2
S1 S2
S1 S2
S1 S2
S1 S2
DS2S1CMP
DS2S1CMPP
S3S2S1 DZCP
S3S2S1 DZCPP