Omron SYSMAC CJ - REFERENCE MANUAL 08-2008 Reference Manual page 114

Instruction Functions
Instruction Symbol/Operand
Mnemonic
Code
DOUBLE LOGA-
RITHM LOGD(859)
LOGD
@LOGD
859
S: 1st source
word
R: 1st result word
DOUBLE EXPO-
NENTIAL
PWRD(860)
POWER
PWRD
@PWRD
860
B: 1st base word
E: 1st exponent
word
R: 1st result word
DOUBLE SYM-
Using LD:
BOL COMPARI-
SON
Symbol, option
S1
LD, AND. or OR
+
S2
=D (335),
<>D (336),
Using AND:
<D (337),
Symbol, option
<=D (338),
S1
>D (339),
or >=D (340)
S2
Using OR:
Symbol, option
S1
S2
S1: Comparison data 1
S2: Comparison data 2
74
Calculates the natural (base e) logarithm of the specified double-precision
floating-point data (64 bits) and outputs the result to the result words.
S
R
Raises a double-precision floating-point number (64 bits) to the power of
another double-precision floating-point number and outputs the result to
the result words.
B
E
R
Compares the specified double-precision data (64 bits) and creates an ON
execution condition if the comparison result is true.
Three kinds of symbols can be used with the floating-point symbol com-
parison instructions: LD (Load), AND, and OR.
Function
Section 2-2
Location Page
Execution
condition
Output 690
Required
Output 692
Required
LD: 694
Not
required
AND or
OR:
Required