Double Floating-Point Subtract: -D(846) - Omron SYSMAC CJ - REFERENCE MANUAL 08-2008 Reference Manual

Double-precision Floating-point Instructions (CS1-H, CJ1-H, CJ1M, or CS1D Only)
Flags
Precautions
3-16-6 DOUBLE FLOATING-POINT SUBTRACT: –D(846)
Purpose
Ladder Symbol
Variations
Applicable Program Areas
Operand Specifications
Name Label
Error Flag ER
Equals Flag =
Overflow Flag OF
Underflow Flag UF
Negative Flag N
The augend (Au to Au+3) and Addend (Ad to Ad+3) data must be in IEEE754
floating-point data format.
Subtracts one double-precision (64-bit) floating-point number from another
and places the result in the specified destination words.
This instruction is supported by CS1-H, CJ1-H, CJ1M, and CS1D CPU Units
only.
–D(846)
Mi: First Minuend word
Mi
Su: First Subtrahend word
D: First destination word
Su
D
Variations Executed Each Cycle for ON Condition
Executed Once for Upward Differentiation
Executed Once for Downward Differentiation Not supported.
Immediate Refreshing Specification
Block program areas
OK OK
Area
CIO Area
Work Area
Holding Bit Area
Auxiliary Bit Area
Timer Area
Counter Area
DM Area
EM Area without bank
Operation
ON if the augend or addend data is not recognized as
floating-point data.
ON if the augend or addend data is not a number (NaN).
ON if + is to – .
OFF in all other cases.
ON if both the exponent and mantissa of the result are 0.
OFF in all other cases.
ON if the absolute value of the result is too large to be
expressed as a double-precision floating-point value.
ON if the absolute value of the result is too small to be
expressed as a double-precision floating-point value.
ON if the result is negative.
OFF in all other cases.
Step program areas Subroutines
OK
Mi
CIO 0000 to CIO 6140
W000 to W508
H000 to H508
A000 to A956
T0000 to T4092
C0000 to C4092
D00000 to D32764
E00000 to E32764
Section 3-16
–D(846)
@–D(846)
Not supported.
Interrupt tasks
OK
Su D
A448 to A956
665