26 basic instructions, 1 comparison operation instructions – MITSUBISHI ELECTRIC 700 Series User Manual
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Basic Instructions
3.26 Basic Instructions
The basic instructions can handle numerical data represented in 16 bits.
3.26.1 Comparison Operation Instructions
(1) The comparison operation instruction is handled as a contact, compares the
magnitudes of two pieces of data (e.g. =, >, <), and turns on when the condition
holds.
(2) Use the comparison operation instructions in the same manner as the contact
instructions of the PLC instructions as indicated below.
•
LD, LDI ......... LD=
•
AND, ANI ..... AND=
•
OR, ORI ....... OR=
(3) There are the following 18 different comparison operation instructions.
Refer to page 142 for details.
(4) The conditions that the comparison operation instructions turn on are as follows.
Classification
Instruction
Symbol
Classification
Instruction
Symbol
Classification
Instruction
Symbol
=
LD
=
>
LD>
<
LD<
AND
=
AND>
AND<
OR
=
OR>
OR<
≠
LD<>
≤
LD<
=
≥
LD>
=
AND<>
AND<
=
AND>
=
OR<>
OR<
=
OR>
=
ON
OFF
OFF
Dn = K100
98
99
100
101
102
OFF
ON
Dn K100
OFF
ON
Dn K100
OFF
ON
ON
Dn K100
ON
OFF
Dn K100
OFF
ON
Dn K100