Pwrd - Omron CJ - INSTRUCTIONS Reference Manual

3. Instructions

PWRD

Instruction
DOUBLE EXPONENTIAL
POWER
Symbol
Applicable Program Areas
Function block
Area
definitions
Usage OK
Operands
Operand
B First base word
E First exponent word
D First destination word
Operand Specifications
Word addresses
Area
CIO WR HR AR
B, E
OK OK OK OK
D
Flags
Name
Error Flag
Equals Flag
Overflow Flag
Underflow Flag
Negative Flag
544
Mnemonic Variations
PWRD @PWRD
Block program areas Step program areas
OK OK
Description
Indirect DM/EM
addresses
@DM
T C DM EM
@EM
OK OK OK OK OK
Label
P_ER • ON if the base data (B to B+3) or exponent data (E to E+3) is not recognized as floating-point data.
• ON if the base data (B to B+3) or exponent data (E to E+3) is not a number (NaN).
• ON if the base data (B to B+3) is 0 and the exponent data (E to E+3) is less than 0. (Division by 0)
• ON if the base data (B to B+3) is negative and the exponent data (E to E+3) is non-integer. (Root of a
negative number)
• OFF in all other cases.
P_EQ • ON if both the exponent and mantissa of the result are 0.
• OFF in all other cases.
P_OF • ON if the absolute value of the result is too large to be expressed as a double-precision floating-point
value.
• OFF in all other cases.
P_UF • ON if the absolute value of the result is too small to be expressed as a double-precision floating-point
value.
• OFF in all other cases.
P_N • ON if the result is negative.
• OFF in all other cases.
Function
code
Raises a double-precision (64-bit) floating-point
860 number to the power of another double-precision
(64-bit) floating-point number.
PWRD
PWRD(860)
B
B: First base word
E
E: First exponent word
D D: First destination word
Subroutines Interrupt tasks
OK
Data type
LREAL
LREAL
LREAL
Registers
Con-
stants
*DM
DR IR
*EM
OK --- --- ---
Operation
CS/CJ/NSJ Series Instructions Reference Manual (W474)
Function
SFC action or
transition programs
OK OK
Size
4
4
4
Flags
Pulse TR
bits bits
Indirect
TK CF
using IR
OK --- --- --- ---