Mitsubishi Electric MELSEC iQ-F Series Training Manual page 108

5.3
Comparison Operation Instructions
This section describes how to compare numerical values.
=
>=
• The comparison instruction compares the value in the source 1 (s1) and that in the source 2 (s2), and brings the devices in
the continuity state when conditions are satisfied.
• The instruction can be regarded as one normally open contact (
conditions are satisfied.
=
• (s1) (s2) ••••• The ladder goes in the continuity state when the value in the source 1 is equal to that in the
source 2.
< (s1) (s2)
• ••••• The ladder goes in the continuity state when the value in the source 1 is smaller than that in the
source 2.
• > (s1) (s2) ••••• The ladder goes in the continuity state when the value in the source 1 is larger than that in the
source 2.
<=
• (s1) (s2) ••••• The ladder goes in the continuity state when the value in the source 1 is equal to or smaller than
that in the source 2.
>= (s1) (s2)
• ••••• The ladder goes in the continuity state when the value in the source 1 is equal to or larger than
that in the source 2.
(s1) (s2)
• <> ••••• The ladder goes in the continuity state when the value in the source 1 are not equal to that in the
source 2.
<> >
Size comparison
< <=
X102
0
X103
6
9
>
13 =
17 <=
21 <>
25 >
32 <=
>=
39 =
46
> K20 C10 Y174
< K40 C10
Project name
Program name
OUT C0
MOV C0
(s1) (s2)
C0 K1
C0 K4
C0 K6
C0 K8
C0 K2 < C0 K7
C0 K3
C0 K7
C0 K10 RST
) because it goes in the continuity state only when
5 BASIC INSTRUCTIONS -PART 2-
5.3 Comparison Operation Instructions
RB-15
MAIN
K99
D0
Y170
Y171
Y172
Y173
Y174
Y175
C0
END
Y174
5
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