Omron CP - PROGRAMMING MANUAL 05-2007 Programming Manual page 564

Double-precision Floating-point Instructions
Applicable Program Areas
Operand Specifications
Description
Flags
Block program areas
OK OK
Area
CIO Area
Work Area
Holding Bit Area
Auxiliary Bit Area
Timer Area
Counter Area
DM Area
Indirect DM addresses
in binary
Indirect DM addresses
in BCD
Constants
Data Registers
Index Registers
Indirect addressing
using Index Registers
FIXD(841) converts the integer portion of the double-precision (64-bit) float-
ing-point number in words S to S+3 (IEEE754-format) to 16-bit signed binary
data and places the result in D.
S+3 S+2 S+1
D
Signed binary data (16 bits)
Only the integer portion of the floating-point data is converted, and the fraction
portion is truncated. The integer portion of the floating-point data must be
within the range of –32,768 to 32,767.
Example conversions:
A floating-point value of 3.5 is converted to 3.
A floating-point value of –3.5 is converted to –3.
Name Label
Error Flag ER
Equals Flag =
Negative Flag N
Step program areas Subroutines
OK
S
CIO 0 to CIO 6140
W0 to W508
H0 to H508
A0 to A956
T0000 to T4092
C0000 to C4092
D0 to D32764
@ D0 to @ D32767
*D0 to *D32767
---
---
---
,IR0 to ,IR15
–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
S
Floating-point data (64 bits)
Operation
ON if the source data (S to S+3) is not a number (NaN).
ON if the integer portion of the source data (S to S+3) is
not within the range of –32,768 to 32,767.
OFF in all other cases.
ON if the result is 0000.
OFF in all other cases.
ON if bit 15 of the result is ON.
OFF in all other cases.
Section 3-15
Interrupt tasks
OK
D
CIO 0 to CIO 6143
W0 to W511
H0 to H511
A448 to A959
T0000 to T4095
C0000 to C4095
D0 to D32767
DR0 to DR15
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