Filter
Top Products
140
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>=
ONOFF OFF
Dn = K100
98 99 100 101 102
OFF ONDn K100
OFF
ONDn K100
OFFON ONDn K100
ON OFFDn K100
OFF ON
Dn K100