7  APPLICATION INSTRUCTIONS
7.9  Real Number Instructions
709
7
Outputting a comparison result of single-precision real numbers
ECMP(P)
These instructions compare the single-precision real number data specified by (s1) with the single-precision real number data 
specified by (s2), and according to the result (small, equal, or large), (d), (d)+1, or (d)+2 is turned on.
■Execution condition
■Description, range, data type
■Applicable devices
*1 T, ST, and C cannot be used.
• The RnCPU and RnENCPU with firmware version "17" or later support these instructions. (Use an engineering tool with version "1.020W" or later.)
Ladder ST
ENO:=ECMP(EN,s1,s2,d);
ENO:=ECMPP(EN,s1,s2,d);
FBD/LD
Instruction Execution condition
ECMP
ECMPP
Operand Description Range Data type Data type (label)
(s1) Comparison data or the start device for storing the 
comparison data
0, 2
-126
|(s1)|<2
128
Single-precision real 
number
ANYREAL_32
(s2) Comparison data or the start device for storing the 
comparison data
0, 2
-126
|(s2)|<2
128
Single-precision real 
number
ANYREAL_32
(d) The start device where the comparison result is stored  Bit ANYBIT_ARRAY
(Number of elements: 3)
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)   
(d) 
*1
     
RnCPU
RnENCPU
RnSFCPU RnSFCPURnPCPURnPCPU
(Standard) (Safety)
(Redundant)
(Process)