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2 Instructions
2-242
CP1E CPU Unit Instructions Reference Manual(W483)
Function
Options
With the three input types and six symbols, there are 18 different possible combinations.
The input comparison instruction
compares the data specified in S1
and S2 as single-precision floating
point values (32-bit IEEE754 data)
and creates an ON execution condi-
tion when the comparison condition
is true.
When the data is stored in words, S1
and S2 specify the first of two words
containing the 32-bit data. It is also
possible to input the floating-point
data as an 8-digit hexadecimal con-
stant.
The input comparison instructions
are treated just like the LD, AND, and
OR instructions to control the execu-
tion of subsequent instructions.
LD: The instruction can be con-
nected directly to the left bus bar.
AND: The instruction cannot be con-
nected directly to the left bus bar.
OR: The instruction can be con-
nected directly to the left bus bar.
Symbol
(LD, AND, and OR cannot be
used in a ladder program)
Option (data format)
LD=, AND=, OR=, LD<>, AND<>,
OR<>, LD<, AND<, OR<, LD<=,
AND<=, OR<=, LD>, AND>, OR>,
LD>=, AND>=, OR>=
+ F: Single-precision floating-point
data
Code Mnemonic Name Function
329 LD=F LOAD FLOATING EQUAL True if
S
1
+1, S
1
=
S
2
+1, S
2
AND=F AND FLOATING EQUAL
OR=F OR FLOATING EQUAL
330 LD<>F LOAD FLOATING NOT EQUAL True if
S
1
+1, S
1
≠
S
2
+1, S
2
AND<>F AND FLOATING NOT EQUAL
OR<>F OR FLOATING NOT EQUAL
331 LD<F LOAD FLOATING LESS THAN True if
S
1
+1, S
1
<
S
2
+1, S
2
AND<F AND FLOATING LESS THAN
OR<F OR FLOATING LESS THAN
332 LD<=F LOAD FLOATING LESS THAN OR EQUAL True if
S
1
+1, S
1
≤
S
2
+1, S
2
AND<=F AND FLOATING LESS THAN OR EQUAL
OR<=F OR FLOATING LESS THAN OR EQUAL
333 LD>F LOAD FLOATING GREATER THAN True if
S
1
+1, S
1
>
S
2
+1, S
2
AND>F AND FLOATING GREATER THAN
OR>F OR FLOATING GREATER THAN
<F
S1
S2
<F
S1
S2
<F
S1
S2
LD connection
AND connection
OR connection
ON execution condition when
comparison result is true.
ON execution condition when
comparison result is true.
ON execution condition when
comparison result is true.