Mitsubishi MELSEC-Q/L

237
FLTD, FLTDP, DFLTD, DFLTDP
1
2
3
4
6
7
8
6.3 Data conversion instructions 6.3.4 FLTD, FLTDP, DFLTD, DFLTDP
: Integer data to be converted to 64-bit floating decimal point data or head number of the devices where the integer data is stored (BIN 16/32 bits)
:
Head number of the devices where the converted 64-bit floating decimal point data will be stored (real number)
Function
FLTD
(1) Converts 16-bit BIN data designated by to 64-bit floating decimal point type real number, and stores at device number
designated by .
(2) BIN values between -32768 to 32767 can be designated by .
DFLTD
(1) Converts 32-bit BIN data designated by to 64-bit floating decimal point type real number, and stores at device number
designated by .
(2) BIN values between -2147483648 to 2147483647 can be designated by +1 and .
Operation Error
(1) There is no operation error in the FLT(P) or DFLT(P) instruction.
Program Example
(1) The following program converts the BIN 16-bit data at D20 to a 64-bit floating decimal point type real number and stores
the result at D0 to D3.
[Ladder Mode] [List Mode]
6.3.4 FLTD, FLTDP Convers ion from BIN 16-bit data to f loating-point data
(Double precision )
DFLTD, DFLTDP Conversion fr om BIN 32-bi t data to floating -point data
(Double precision )
6.3.4 FLTD, FLTDP, DFLTD, DFLTDP
Setting
Data
Internal Devices
R, ZR
J\
U\G
Zn
Constants
K, H
Other
Bit Word Bit Word
–– –– ––
–– –– –– ––
Universal LCPU
Basic
High
performance
Process Redundant
P
Command
Command
S D
S D
FLTD, DFLTD
FLTDP, DFLTDP
indicates an instruction symbol of FLTD/DFLTD.
S
D
S
D
S
D
BIN 16 bits
S
+3
64-bit floating-point
real number
D
+2
D
D
+1
D
S
S
D
BIN 32 bits
Upper 16 bits Lower 16 bits
+1
S S
+3
64-bit floating-point
real number
D
+2
D D
+1
D
S S
Step
Instruction
Device