Comparison Operation Instruction: 32-Bit Data Comparison - Mitsubishi Electric A800 Programming Manual

Basic instruction (32-bit)
3.27.2
Comparison operation instruction:
32-bit data comparison ... D=, D<>, D>, D<=, D<,
D>=
Bit device
X Y M
S1   
S2   
Function
• 32-bit comparison operation handled as NO contact.
• Comparison operation results are as follows.
Instruction
symbol inside
D=
D<>
D>
D<=
D<
D>=
Execution condition
The execution conditions for LD
Instruction
Each scan execution
LD
Executed when the previous contact instruction turns ON.
AND
Each scan execution
OR
NOTE
• When the digit setting of a bit device is other than K8 and a start bit device value is other than a multiple of 8, the number of
steps is 7.
158
Sequence program
Applicable device
Word (16-bit) device
T C D
   
   
Comparison
Condition
operation results
S1 S2
=

S1 S2
S1 S2
>
Conducted
S1  S2
S1 < S2
S1  S2
, AND and OR
Execution condition
Constant Level
specification
K H N

K1 to K8

Instruction symbol inside
D=, D<>, D>, D<=, D<, D>=
Setting data
S1
S2
Instruction
symbol inside
D=
D<>
D>
D<=
D<
D>=
are as follows.
Error flag
Digit
(SM0)

Start number of the
comparison data
or the device in which
the data is stored
Condition
operation results

S1 S2
S1 = S2
S1  S2
Not conducted
S1 S2
>
S1  S2
S1 S2
<
Comparison