Mitsubishi Electric MELSEC iQ-R Series, Programming Manual

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706
7 APPLICATION INSTRUCTIONS
7.9 Real Number Instructions
Comparing double-precision real numbers
LDED  , ANDED  , ORED 
These instructions perform a comparison operation of a double-precision real number. (Devices are used as a normally open
contact.)
*1 The engineering tool with version "1.035M" or later supports the ST.
*2 EQ indicates =, NE indicates <>, GT indicates >, LE indicates <=, LT indicates <, and GE indicates >=.
■
Execution condition
Setting data
■
Description, range, data type
■
Applicable devices
Ladder ST
*1
(  is replaced by ED=, ED<>, ED>, ED<=, ED<, ED>=.)
ENO:=LDED_  (EN,s1,s2);
ENO:=ANDED_  (EN,s1,s2);
ENO:=ORED_  (EN,s1,s2);
(  is replaced by any of the following: EQ, NE, GT, LE, LT, GE.)
*2
FBD/LD
(  is replaced by a combination of LDED_, ANDED_, or ORED_ and EQ, NE, GT, LE, LT, or GE.)
*2
Instruction Execution condition
LDED  , ANDED  , ORED  Every scan
Operand Description Range Data type Data type (label)
(s1) Comparison data or the start device where the comparison
data is stored 0, 2
-1022

|(s1)|<2
1024
Double-precision real
number ANYREAL_64
(s2) Comparison data or the start device where the comparison
data is stored 0, 2
-1022

|(s2)|<2
1024
Double-precision real
number ANYREAL_64
EN Execution condition  Bit BOOL
ENO Execution result

Bit BOOL
Operand Bit Word Double word Indirect
specification
Constant Others
X, Y, M, L,
SM, F, B, SB,
FX, FY J  \  T, ST, C, D, W,
SD, SW, FD, R,
ZR, RD U  \G  , J  \  ,
U3E

\(H)G

Z LT, LST,
LC LZ K, H E $
(s1)
           
(s2)            
RnCPU RnENCPU
RnSFCPU RnSFCPU RnPCPU RnPCPU
(Standard) (Safety) (Redundant) (Process)
LD
AND
OR
(s1) (s2)
(s1) (s2)
(s1) (s2)
EN ENO
s1
s2