Comparing Double-Precision Real Numbers - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

Comparing double-precision real numbers

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