660
Double-precision Floating-point Instructions (CS1-H, CJ1-H, CJ1M, or CS1D Only) Section 3-16
Precautions The content of words S to S+3 must be floating-point data and the integer por-
tion must be in the range of –2,147,483,648 to 2,147,483,647.
3-16-3 16-BIT TO DOUBLE FLOATING: DBL(843)
Purpose Converts a 16-bit signed binary value to double-precision (64-bit) floating-
point data and places the result in the specified destination words.
This instruction is supported by CS1-H, CJ1-H, CJ1M, and CS1D CPU Units
only.
Ladder Symbol
Variations
Applicable Program Areas
Operand Specifications
DBL(843)
S
D
S: Source word
D: First destination word
Variations Executed Each Cycle for ON Condition DBL(843)
Executed Once for Upward Differentiation @DBL(843)
Executed Once for Downward Differentiation Not supported.
Immediate Refreshing Specification Not supported.
Block program areas Step program areas Subroutines Interrupt tasks
OK OK OK OK
Area S D
CIO Area CIO 0000 to CIO 6143 CIO 0000 to CIO 6140
Work Area W000 to W511 W000 to W508
Holding Bit Area H000 to H511 H000 to H508
Auxiliary Bit Area A000 to A959 A448 to A956
Timer Area T0000 to T4095 T0000 to T4092
Counter Area C0000 to C4095 C0000 to C4092
DM Area D00000 to D32767 D00000 to D32764
EM Area without bank E00000 to E32767 E00000 to E32764
EM Area with bank En_00000 to En_32767
(n= 0 to C)
En_00000 to En_32764
(n= 0 to C)
Indirect DM/EM
addresses in binary
@ D00000 to @ D32767
@ E00000 to @ E32767
@ En_00000 to @ En_32767
(n = 0 to C)
Indirect DM/EM
addresses in BCD
*D00000 to *D32767
*E00000 to *E32767
*En_00000 to *En_32767
(n = 0 to C)
Constants #0000 to #FFFF
(binary)
---
Data Registers DR0 to DR15 ---
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