7 APPLICATION INSTRUCTIONS
7.9 Real Number Instructions
833
7
Calculating the exponentiation of double-precision real number
POWD(P)
These instructions calculate the exponentiation of a double-precision real number.
■Execution condition
■Description, range, data type
■Applicable devices
Ladder ST
ENO:=POWD(EN,s1,s2,d);
ENO:=POWDP(EN,s1,s2,d);
FBD/LD
Instruction Execution condition
POWD
POWDP
Operand Description Range Data type Data type (label)
(s1) Exponentiation recipient data or the start device containing
the exponentiation recipient data
0, 2
-1022
|(s1)|<2
1024
Double-precision real
number
ANYREAL_64
(s2) Exponentiation data or the start device containing the data 0, 2
-1022
|(s2)|<2
1024
Double-precision real
number
ANYREAL_64
(d) Start device for storing the operation result 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)
(d)
RnCPU
RnENCPU
RnSFCPU RnSFCPURnPCPURnPCPU
(Standard) (Safety)
(Redundant)
(Process)