Floating Decimal Point Data Comparisons (Single Precision); Floating Decimal Point Data Comparisons (Single Precision) (E=,E<>,E>,E<=,E<,E>=) - Mitsubishi MELSEC Q Series Programming Manual

E=,E<>,E>,E<=,E<,E>=
6.1.3

Floating decimal point data comparisons (Single precision)

(E=,E<>,E>,E<=,E<,E>=)
E=,E<>,E>,E<=,E<,E>=
LD
AND
OR
Setting
Data
S1
S2
*1:Available only in multiple Universal model QCPU and LCPU
(1) The 32-bit floating decimal point data from device designated by
point data from device designated by
operation.
(2) The results of the comparison operations for the individual instructions are as follows:
Instruction
Symbol in
E=
E<>
E>
E<=
E<
E>=
6-6
Basic model QCPU: The upper five digits of the serial No. are "04122" or larger.
indicates an instruction symbol of
Command
Command Command
, : Data for comparison or head number of the devices where the data for comparison is stored
S1 S2
(real number)
Internal Devices
R, ZR
Bit Word
––
––
Comparison
Condition
Operation Result
=
S2 S1
S2
S1
>
S2
S1
Continuity
S1 S2
<
S2
S1
S2
S1
Note that use of the E= instruction can on occasion result in situations where
errors cause the two values to not be equal.
X0
Example
E*
E/
E D0 D2
Two values may not be equal.
Ver.
High
Basic
performance
E
/
S1 S2
S1 S2
S1 S2
J \
U \G
Bit Word
––
––
as A normally-open contact, and performs comparison
S2
Instruction
Condition
Symbol in
E=
S1
E<>
E>
S1
E<=
E<
S1
E>=
EMOV E1.23 D0
D0 E4.56 D2
D2 E4.56 D2
M0
Process
Redundant Universal LCPU
.
E E E E E
/ / / /
Constants
Zn Other
E
*1 ––
*1 ––
and 32-bit floating decimal
S1
Comparison
Operation Result
S2
=
S2
S1
S2
Non-continuity
>
S1 S2
S2
<
S2
S1