Omron SYSMAC CJ - REFERENCE MANUAL 01-2008 Reference Manual page 681

Floating-point Math Instructions
Description
642
Area
EM Area with bank En_00000 to
En_32766
(n = 0 to C)
Indirect DM/EM @ D00000 to
addresses in binary @ D32767
@ E00000 to
@ E32767
@ En_00000 to
@ En_32767
(n = 0 to C)
Indirect DM/EM *D00000 to
addresses in BCD *D32767
*E00000 to
*E32767
*En_00000 to
*En_32767
(n = 0 to C)
Constants #00000000 to
#FFFFFFFF
(binary)
Data Registers ---
Index Registers ---
Indirect addressing ,IR0 to ,IR15
using Index Registers
–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –()IR15
,IR0 to ,IR15
FSTR(448) expresses the 32-bit floating-point number in S+1 and S
(IEEE754-format) in decimal notation or scientific notation according to the
control data in words C to C+2, converts the number to ASCII text, and out-
puts the result to the destination words starting at D.
The following diagram shows the contents of the 3 control words.
Data format
Total characters
Fractional digits
Note: There are limits on the total number of characters
and the number of fractional digits. See Limits on the
Number of ASCII Characters on page 644 for details.
• The content of C (Data format) specifies whether to express the number
in S+1, S in decimal notation or scientific notation.
• Decimal notation
Expresses a real number as an integer and fractional part.
Example: 124.56
• Scientific notation
Expresses a real number as an integer part, fractional part, and expo-
nent part.
Example: 1.2456E-2 (1.2456 10
S C
En_00000 to
En_32765
(n = 0 to C)
@ D00000 to
@ D32767
@ E00000 to
@ E32767
@ En_00000 to
@ En_32767
(n = 0 to C)
*D00000 to
*D32767
*E00000 to
*E32767
*En_00000 to
*En_32767
(n = 0 to C)
---
0000 hex: Decimal format
0001 hex: Scientific notation
0002 to 0018 hex (2 to 24 characters, see note)
0000 to 0007 hex (see note)
-2
)
Section 3-15
D
En_00000 to
En_32767
(n = 0 to C)
@ D00000 to
@ D32767
@ E00000 to
@ E32767
@ En_00000 to
@ En_32767
(n = 0 to C)
*D00000 to
*D32767
*E00000 to
*E32767
*En_00000 to
*En_32767
(n = 0 to C)