Chapter 6 Instruction Details
XBC E-Type Main Unit
6-124
Ver. 1
6.23.2 Real Compare (16-Bit: R<, R<=, R<>, R=, R>, R>= ) (32-Bit: L<, L<=, L<>,L=, L>, L>=)
Instruction
Area Available
Step
Flag
P
M K
F
L
T
C
S
Z D.x R.x
Con
st.
U
N
D
R
Error
(F110)
Zero
(F111)
Carry
(F112)
x
(compare
operators)
S1 O O O O O O O
-
O
-
-
O O O O O
2~5
-
-
-
S2 O O O O O O O
-
O
-
-
O O O O O
16-Bit
x
Operators
32-Bit
x
Operators
Name
Condition
Operation
result
Condition
Operation
result
R<
L<
Less Than
S1 < S2
On
S1
≥
S2
Off
R<=
L<=
Less Than or Equal To
S1
≤
S2
On
S1 > S2
Off
R<>
L<>
Not Equal To
S1
≠
S2
On
S1 = S2
Off
R=
L=
Equal To
S1 = S2
On
S1
≠
S2
Off
R>
L>
Greater Than
S1 > S2
On
S1
≤
S2
Off
R>=
L>=
Greater Than or Equal To
S1
≥
S2
On
S1 < S2
Off
Operand
Description
Data Type
S1
First Real Number Data or Data address to compare
REAL/LREAL
S2
Second Real Number Data or Data address to compare
REAL/LREAL
*Note: Compare instruction must be used in Input (Contact) Position of ladder rung. This instruction uses 3
contact points.
1) LOAD x (16-Bit: R<, R<=, R<>, R=, R>, R>= ) (32-Bit: L<, L<=, L<>, L=, L>, L>=)
a) Ladder Structure: Compares S1 with S2. If
x
operation is true, coil CR1 will be On. Otherwise CR1 will be Off.
b) Be sure that X Condition R= used. The value of floating decimal real number depends on accuracy.
c) Example: When Data Register D1000 < D2000=1.5 (i.e. D1000=5; D2000=10), Real Compare Input Signal is
On and then 1234 is saved in P1600.
2) AND x (16-Bit: R<, R<=, R<>, R=, R>, R>= ) (32-Bit: L<, L<=, L<>, L=, L>, L>=)
a) Ladder Structure: If the contact C1 is on AND the x comparison condidtion is true, then coil CR1 will be On.
Otherwise CR1 will be Off.
Input Positions
Output
Position
x
S1
S2
LOAD
x
Coil
CR1
x
S1
S2
AND
x
Contact
Coil
CR1
C1
Summary of Contents for XBC-DN10E
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